Merge tag 'for-linus-20150422' of git://git.infradead.org/linux-mtd
Pull MTD updates from Brian Norris:
"Common MTD:
- Add Kconfig option for keeping both the 'master' and 'partition'
MTDs registered as devices. This would really make a better
default if we could do it over, as it allows a lot more flexibility
in (1) determining the flash topology of the system from user-space
and (2) adding temporary partitions at runtime (ioctl(BLKPG)).
Unfortunately, this would possibly cause user-space breakage, as it
will cause renumbering of the /dev/mtdX devices. We'll see if we
can change this in the future, as there have already been a few
people looking for this feature, and I know others have just been
working around our current limitations instead of fixing them this
way.
- Along with the previous change, add some additional information to
sysfs, so user-space can read the offset of each partition within
its master device
SPI NOR:
- add new device tree compatible binding to represent the
mostly-compatible class of SPI NOR flash which can be detected by
their extended JEDEC ID bytes, cutting down the duplication of our
ID tables
- misc. new IDs
Various other miscellaneous fixes and changes"
* tag 'for-linus-20150422' of git://git.infradead.org/linux-mtd: (53 commits)
mtd: spi-nor: Add support for Macronix mx25u6435f serial flash
mtd: spi-nor: Add support for Winbond w25q64dw serial flash
mtd: spi-nor: add support for the Winbond W25X05 flash
mtd: spi-nor: support en25s64 device
mtd: m25p80: bind to "nor-jedec" ID, for auto-detection
Documentation: devicetree: m25p80: add "nor-jedec" binding
mtd: Make MTD tests cancelable
mtd: mtd_oobtest: Fix bitflip_limit usage in test case 3
mtd: docg3: remove invalid __exit annotations
mtd: fsl_ifc_nand: use msecs_to_jiffies for time conversion
mtd: atmel_nand: don't map the ROM table if no pmecc table offset in DT
mtd: atmel_nand: add a definition for the oob reserved bytes
mtd: part: Remove partition overlap checks
mtd: part: Add sysfs variable for offset of partition
mtd: part: Create the master device node when partitioned
mtd: ts5500_flash: Fix typo in MODULE_DESCRIPTION in ts5500_flash.c
mtd: denali: Disable sub-page writes in Denali NAND driver
mtd: pxa3xx_nand: cleanup wait_for_completion handling
mtd: nand: gpmi: Check for scan_bbt() error
mtd: nand: gpmi: fixup return type of wait_for_completion_timeout
...
diff --git a/Documentation/ABI/testing/sysfs-class-mtd b/Documentation/ABI/testing/sysfs-class-mtd
index 76ee192..3b5c3bc 100644
--- a/Documentation/ABI/testing/sysfs-class-mtd
+++ b/Documentation/ABI/testing/sysfs-class-mtd
@@ -222,3 +222,13 @@
The number of blocks that are marked as reserved, if any, in
this partition. These are typically used to store the in-flash
bad block table (BBT).
+
+What: /sys/class/mtd/mtdX/offset
+Date: March 2015
+KernelVersion: 4.1
+Contact: linux-mtd@lists.infradead.org
+Description:
+ For a partition, the offset of that partition from the start
+ of the master device in bytes. This attribute is absent on
+ main devices, so it can be used to distinguish between
+ partitions and devices that aren't partitions.
diff --git a/Documentation/devicetree/bindings/mtd/m25p80.txt b/Documentation/devicetree/bindings/mtd/m25p80.txt
index 4611aa8..f20b111 100644
--- a/Documentation/devicetree/bindings/mtd/m25p80.txt
+++ b/Documentation/devicetree/bindings/mtd/m25p80.txt
@@ -3,10 +3,13 @@
Required properties:
- #address-cells, #size-cells : Must be present if the device has sub-nodes
representing partitions.
-- compatible : Should be the manufacturer and the name of the chip. Bear in mind
- the DT binding is not Linux-only, but in case of Linux, see the
- "spi_nor_ids" table in drivers/mtd/spi-nor/spi-nor.c for the list
- of supported chips.
+- compatible : May include a device-specific string consisting of the
+ manufacturer and name of the chip. Bear in mind the DT binding
+ is not Linux-only, but in case of Linux, see the "m25p_ids"
+ table in drivers/mtd/devices/m25p80.c for the list of supported
+ chips.
+ Must also include "nor-jedec" for any SPI NOR flash that can be
+ identified by the JEDEC READ ID opcode (0x9F).
- reg : Chip-Select number
- spi-max-frequency : Maximum frequency of the SPI bus the chip can operate at
@@ -22,7 +25,7 @@
flash: m25p80@0 {
#address-cells = <1>;
#size-cells = <1>;
- compatible = "spansion,m25p80";
+ compatible = "spansion,m25p80", "nor-jedec";
reg = <0>;
spi-max-frequency = <40000000>;
m25p,fast-read;
diff --git a/Documentation/devicetree/bindings/mtd/pxa3xx-nand.txt b/Documentation/devicetree/bindings/mtd/pxa3xx-nand.txt
index de8b517..4f833e3 100644
--- a/Documentation/devicetree/bindings/mtd/pxa3xx-nand.txt
+++ b/Documentation/devicetree/bindings/mtd/pxa3xx-nand.txt
@@ -14,7 +14,7 @@
- marvell,nand-enable-arbiter: Set to enable the bus arbiter
- marvell,nand-keep-config: Set to keep the NAND controller config as set
by the bootloader
- - num-cs: Number of chipselect lines to usw
+ - num-cs: Number of chipselect lines to use
- nand-on-flash-bbt: boolean to enable on flash bbt option if
not present false
- nand-ecc-strength: number of bits to correct per ECC step
diff --git a/Documentation/devicetree/bindings/mtd/sunxi-nand.txt b/Documentation/devicetree/bindings/mtd/sunxi-nand.txt
index 0273adb..086d6f4 100644
--- a/Documentation/devicetree/bindings/mtd/sunxi-nand.txt
+++ b/Documentation/devicetree/bindings/mtd/sunxi-nand.txt
@@ -21,7 +21,7 @@
- nand-ecc-mode : one of the supported ECC modes ("hw", "hw_syndrome", "soft",
"soft_bch" or "none")
-see Documentation/devicetree/mtd/nand.txt for generic bindings.
+see Documentation/devicetree/bindings/mtd/nand.txt for generic bindings.
Examples:
diff --git a/drivers/mtd/Kconfig b/drivers/mtd/Kconfig
index 71fea89..a03ad29 100644
--- a/drivers/mtd/Kconfig
+++ b/drivers/mtd/Kconfig
@@ -309,6 +309,19 @@
The driver provides wear leveling by storing erase counter into the
OOB.
+config MTD_PARTITIONED_MASTER
+ bool "Retain master device when partitioned"
+ default n
+ depends on MTD
+ help
+ For historical reasons, by default, either a master is present or
+ several partitions are present, but not both. The concern was that
+ data listed in multiple partitions was dangerous; however, SCSI does
+ this and it is frequently useful for applications. This config option
+ leaves the master in even if the device is partitioned. It also makes
+ the parent of the partition device be the master device, rather than
+ what lies behind the master.
+
source "drivers/mtd/chips/Kconfig"
source "drivers/mtd/maps/Kconfig"
diff --git a/drivers/mtd/chips/cfi_cmdset_0020.c b/drivers/mtd/chips/cfi_cmdset_0020.c
index 423666b..9a1a6ff 100644
--- a/drivers/mtd/chips/cfi_cmdset_0020.c
+++ b/drivers/mtd/chips/cfi_cmdset_0020.c
@@ -206,23 +206,23 @@
mtd->eraseregions[(j*cfi->cfiq->NumEraseRegions)+i].numblocks = ernum;
}
offset += (ersize * ernum);
- }
+ }
- if (offset != devsize) {
- /* Argh */
- printk(KERN_WARNING "Sum of regions (%lx) != total size of set of interleaved chips (%lx)\n", offset, devsize);
- kfree(mtd->eraseregions);
- kfree(cfi->cmdset_priv);
- kfree(mtd);
- return NULL;
- }
+ if (offset != devsize) {
+ /* Argh */
+ printk(KERN_WARNING "Sum of regions (%lx) != total size of set of interleaved chips (%lx)\n", offset, devsize);
+ kfree(mtd->eraseregions);
+ kfree(cfi->cmdset_priv);
+ kfree(mtd);
+ return NULL;
+ }
- for (i=0; i<mtd->numeraseregions;i++){
- printk(KERN_DEBUG "%d: offset=0x%llx,size=0x%x,blocks=%d\n",
- i, (unsigned long long)mtd->eraseregions[i].offset,
- mtd->eraseregions[i].erasesize,
- mtd->eraseregions[i].numblocks);
- }
+ for (i=0; i<mtd->numeraseregions;i++){
+ printk(KERN_DEBUG "%d: offset=0x%llx,size=0x%x,blocks=%d\n",
+ i, (unsigned long long)mtd->eraseregions[i].offset,
+ mtd->eraseregions[i].erasesize,
+ mtd->eraseregions[i].numblocks);
+ }
/* Also select the correct geometry setup too */
mtd->_erase = cfi_staa_erase_varsize;
diff --git a/drivers/mtd/devices/block2mtd.c b/drivers/mtd/devices/block2mtd.c
index 66f0405..b16f3cd 100644
--- a/drivers/mtd/devices/block2mtd.c
+++ b/drivers/mtd/devices/block2mtd.c
@@ -9,7 +9,15 @@
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+/*
+ * When the first attempt at device initialization fails, we may need to
+ * wait a little bit and retry. This timeout, by default 3 seconds, gives
+ * device time to start up. Required on BCM2708 and a few other chipsets.
+ */
+#define MTD_DEFAULT_TIMEOUT 3
+
#include <linux/module.h>
+#include <linux/delay.h>
#include <linux/fs.h>
#include <linux/blkdev.h>
#include <linux/bio.h>
@@ -209,10 +217,14 @@
}
-static struct block2mtd_dev *add_device(char *devname, int erase_size)
+static struct block2mtd_dev *add_device(char *devname, int erase_size,
+ int timeout)
{
+#ifndef MODULE
+ int i;
+#endif
const fmode_t mode = FMODE_READ | FMODE_WRITE | FMODE_EXCL;
- struct block_device *bdev;
+ struct block_device *bdev = ERR_PTR(-ENODEV);
struct block2mtd_dev *dev;
char *name;
@@ -225,15 +237,28 @@
/* Get a handle on the device */
bdev = blkdev_get_by_path(devname, mode, dev);
+
#ifndef MODULE
- if (IS_ERR(bdev)) {
+ /*
+ * We might not have the root device mounted at this point.
+ * Try to resolve the device name by other means.
+ */
+ for (i = 0; IS_ERR(bdev) && i <= timeout; i++) {
+ dev_t devt;
- /* We might not have rootfs mounted at this point. Try
- to resolve the device name by other means. */
+ if (i)
+ /*
+ * Calling wait_for_device_probe in the first loop
+ * was not enough, sleep for a bit in subsequent
+ * go-arounds.
+ */
+ msleep(1000);
+ wait_for_device_probe();
- dev_t devt = name_to_dev_t(devname);
- if (devt)
- bdev = blkdev_get_by_dev(devt, mode, dev);
+ devt = name_to_dev_t(devname);
+ if (!devt)
+ continue;
+ bdev = blkdev_get_by_dev(devt, mode, dev);
}
#endif
@@ -280,6 +305,7 @@
/* Device didn't get added, so free the entry */
goto err_destroy_mutex;
}
+
list_add(&dev->list, &blkmtd_device_list);
pr_info("mtd%d: [%s] erase_size = %dKiB [%d]\n",
dev->mtd.index,
@@ -348,16 +374,19 @@
#ifndef MODULE
static int block2mtd_init_called = 0;
-static char block2mtd_paramline[80 + 12]; /* 80 for device, 12 for erase size */
+/* 80 for device, 12 for erase size */
+static char block2mtd_paramline[80 + 12];
#endif
static int block2mtd_setup2(const char *val)
{
- char buf[80 + 12]; /* 80 for device, 12 for erase size */
+ /* 80 for device, 12 for erase size, 80 for name, 8 for timeout */
+ char buf[80 + 12 + 80 + 8];
char *str = buf;
char *token[2];
char *name;
size_t erase_size = PAGE_SIZE;
+ unsigned long timeout = MTD_DEFAULT_TIMEOUT;
int i, ret;
if (strnlen(val, sizeof(buf)) >= sizeof(buf)) {
@@ -395,7 +424,7 @@
}
}
- add_device(name, erase_size);
+ add_device(name, erase_size, timeout);
return 0;
}
@@ -463,8 +492,7 @@
}
}
-
-module_init(block2mtd_init);
+late_initcall(block2mtd_init);
module_exit(block2mtd_exit);
MODULE_LICENSE("GPL");
diff --git a/drivers/mtd/devices/docg3.c b/drivers/mtd/devices/docg3.c
index 448ce42..866d319 100644
--- a/drivers/mtd/devices/docg3.c
+++ b/drivers/mtd/devices/docg3.c
@@ -1805,7 +1805,7 @@
}
}
-static void __exit doc_dbg_unregister(struct docg3 *docg3)
+static void doc_dbg_unregister(struct docg3 *docg3)
{
debugfs_remove_recursive(docg3->debugfs_root);
}
@@ -2033,7 +2033,7 @@
struct mtd_info *mtd;
struct resource *ress;
void __iomem *base;
- int ret, floor, found = 0;
+ int ret, floor;
struct docg3_cascade *cascade;
ret = -ENXIO;
@@ -2073,14 +2073,11 @@
0);
if (ret)
goto err_probe;
- found++;
}
ret = doc_register_sysfs(pdev, cascade);
if (ret)
goto err_probe;
- if (!found)
- goto notfound;
platform_set_drvdata(pdev, cascade);
doc_dbg_register(cascade->floors[0]->priv);
@@ -2103,7 +2100,7 @@
*
* Returns 0
*/
-static int __exit docg3_release(struct platform_device *pdev)
+static int docg3_release(struct platform_device *pdev)
{
struct docg3_cascade *cascade = platform_get_drvdata(pdev);
struct docg3 *docg3 = cascade->floors[0]->priv;
@@ -2134,7 +2131,7 @@
},
.suspend = docg3_suspend,
.resume = docg3_resume,
- .remove = __exit_p(docg3_release),
+ .remove = docg3_release,
};
module_platform_driver_probe(g3_driver, docg3_probe);
diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c
index 85e35467..7c8b169 100644
--- a/drivers/mtd/devices/m25p80.c
+++ b/drivers/mtd/devices/m25p80.c
@@ -223,6 +223,8 @@
*/
if (data && data->type)
flash_name = data->type;
+ else if (!strcmp(spi->modalias, "nor-jedec"))
+ flash_name = NULL; /* auto-detect */
else
flash_name = spi->modalias;
@@ -247,9 +249,16 @@
}
/*
- * XXX This needs to be kept in sync with spi_nor_ids. We can't share
- * it with spi-nor, because if this is built as a module then modpost
- * won't be able to read it and add appropriate aliases.
+ * Do NOT add to this array without reading the following:
+ *
+ * Historically, many flash devices are bound to this driver by their name. But
+ * since most of these flash are compatible to some extent, and their
+ * differences can often be differentiated by the JEDEC read-ID command, we
+ * encourage new users to add support to the spi-nor library, and simply bind
+ * against a generic string here (e.g., "nor-jedec").
+ *
+ * Many flash names are kept here in this list (as well as in spi-nor.c) to
+ * keep them available as module aliases for existing platforms.
*/
static const struct spi_device_id m25p_ids[] = {
{"at25fs010"}, {"at25fs040"}, {"at25df041a"}, {"at25df321a"},
@@ -291,6 +300,12 @@
{"w25x64"}, {"w25q64"}, {"w25q80"}, {"w25q80bl"},
{"w25q128"}, {"w25q256"}, {"cat25c11"},
{"cat25c03"}, {"cat25c09"}, {"cat25c17"}, {"cat25128"},
+
+ /*
+ * Generic support for SPI NOR that can be identified by the JEDEC READ
+ * ID opcode (0x9F). Use this, if possible.
+ */
+ {"nor-jedec"},
{ },
};
MODULE_DEVICE_TABLE(spi, m25p_ids);
diff --git a/drivers/mtd/maps/Kconfig b/drivers/mtd/maps/Kconfig
index ba801d2..e715ae9 100644
--- a/drivers/mtd/maps/Kconfig
+++ b/drivers/mtd/maps/Kconfig
@@ -242,7 +242,7 @@
config MTD_CFI_FLAGADM
tristate "CFI Flash device mapping on FlagaDM"
- depends on 8xx && MTD_CFI
+ depends on PPC_8xx && MTD_CFI
help
Mapping for the Flaga digital module. If you don't have one, ignore
this setting.
diff --git a/drivers/mtd/maps/sa1100-flash.c b/drivers/mtd/maps/sa1100-flash.c
index ea69720..892ad6a 100644
--- a/drivers/mtd/maps/sa1100-flash.c
+++ b/drivers/mtd/maps/sa1100-flash.c
@@ -274,7 +274,7 @@
return err;
}
-static int __exit sa1100_mtd_remove(struct platform_device *pdev)
+static int sa1100_mtd_remove(struct platform_device *pdev)
{
struct sa_info *info = platform_get_drvdata(pdev);
struct flash_platform_data *plat = dev_get_platdata(&pdev->dev);
@@ -286,7 +286,7 @@
static struct platform_driver sa1100_mtd_driver = {
.probe = sa1100_mtd_probe,
- .remove = __exit_p(sa1100_mtd_remove),
+ .remove = sa1100_mtd_remove,
.driver = {
.name = "sa1100-mtd",
},
diff --git a/drivers/mtd/maps/ts5500_flash.c b/drivers/mtd/maps/ts5500_flash.c
index d1d671d..9969fed 100644
--- a/drivers/mtd/maps/ts5500_flash.c
+++ b/drivers/mtd/maps/ts5500_flash.c
@@ -117,5 +117,5 @@
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Sean Young <sean@mess.org>");
-MODULE_DESCRIPTION("MTD map driver for Techology Systems TS-5500 board");
+MODULE_DESCRIPTION("MTD map driver for Technology Systems TS-5500 board");
diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c
index d08229e..2b0c5287 100644
--- a/drivers/mtd/mtd_blkdevs.c
+++ b/drivers/mtd/mtd_blkdevs.c
@@ -171,9 +171,6 @@
background_done = 0;
}
- if (req)
- __blk_end_request_all(req, -EIO);
-
spin_unlock_irq(rq->queue_lock);
}
diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c
index 11883bd..d172195 100644
--- a/drivers/mtd/mtdcore.c
+++ b/drivers/mtd/mtdcore.c
@@ -38,6 +38,7 @@
#include <linux/gfp.h>
#include <linux/slab.h>
#include <linux/reboot.h>
+#include <linux/kconfig.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
@@ -501,6 +502,29 @@
return ret;
}
+static int mtd_add_device_partitions(struct mtd_info *mtd,
+ struct mtd_partition *real_parts,
+ int nbparts)
+{
+ int ret;
+
+ if (nbparts == 0 || IS_ENABLED(CONFIG_MTD_PARTITIONED_MASTER)) {
+ ret = add_mtd_device(mtd);
+ if (ret == 1)
+ return -ENODEV;
+ }
+
+ if (nbparts > 0) {
+ ret = add_mtd_partitions(mtd, real_parts, nbparts);
+ if (ret && IS_ENABLED(CONFIG_MTD_PARTITIONED_MASTER))
+ del_mtd_device(mtd);
+ return ret;
+ }
+
+ return 0;
+}
+
+
/**
* mtd_device_parse_register - parse partitions and register an MTD device.
*
@@ -523,7 +547,8 @@
* found this functions tries to fallback to information specified in
* @parts/@nr_parts.
* * If any partitioning info was found, this function registers the found
- * partitions.
+ * partitions. If the MTD_PARTITIONED_MASTER option is set, then the device
+ * as a whole is registered first.
* * If no partitions were found this function just registers the MTD device
* @mtd and exits.
*
@@ -534,27 +559,21 @@
const struct mtd_partition *parts,
int nr_parts)
{
- int err;
- struct mtd_partition *real_parts;
+ int ret;
+ struct mtd_partition *real_parts = NULL;
- err = parse_mtd_partitions(mtd, types, &real_parts, parser_data);
- if (err <= 0 && nr_parts && parts) {
+ ret = parse_mtd_partitions(mtd, types, &real_parts, parser_data);
+ if (ret <= 0 && nr_parts && parts) {
real_parts = kmemdup(parts, sizeof(*parts) * nr_parts,
GFP_KERNEL);
if (!real_parts)
- err = -ENOMEM;
+ ret = -ENOMEM;
else
- err = nr_parts;
+ ret = nr_parts;
}
- if (err > 0) {
- err = add_mtd_partitions(mtd, real_parts, err);
- kfree(real_parts);
- } else if (err == 0) {
- err = add_mtd_device(mtd);
- if (err == 1)
- err = -ENODEV;
- }
+ if (ret >= 0)
+ ret = mtd_add_device_partitions(mtd, real_parts, ret);
/*
* FIXME: some drivers unfortunately call this function more than once.
@@ -569,7 +588,8 @@
register_reboot_notifier(&mtd->reboot_notifier);
}
- return err;
+ kfree(real_parts);
+ return ret;
}
EXPORT_SYMBOL_GPL(mtd_device_parse_register);
diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c
index e779de3..cafdb88 100644
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -30,6 +30,7 @@
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/err.h>
+#include <linux/kconfig.h>
#include "mtdcore.h"
@@ -379,10 +380,17 @@
slave->mtd.name = name;
slave->mtd.owner = master->owner;
- /* NOTE: we don't arrange MTDs as a tree; it'd be error-prone
- * to have the same data be in two different partitions.
+ /* NOTE: Historically, we didn't arrange MTDs as a tree out of
+ * concern for showing the same data in multiple partitions.
+ * However, it is very useful to have the master node present,
+ * so the MTD_PARTITIONED_MASTER option allows that. The master
+ * will have device nodes etc only if this is set, so make the
+ * parent conditional on that option. Note, this is a way to
+ * distinguish between the master and the partition in sysfs.
*/
- slave->mtd.dev.parent = master->dev.parent;
+ slave->mtd.dev.parent = IS_ENABLED(CONFIG_MTD_PARTITIONED_MASTER) ?
+ &master->dev :
+ master->dev.parent;
slave->mtd._read = part_read;
slave->mtd._write = part_write;
@@ -546,12 +554,35 @@
return slave;
}
+static ssize_t mtd_partition_offset_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct mtd_info *mtd = dev_get_drvdata(dev);
+ struct mtd_part *part = PART(mtd);
+ return snprintf(buf, PAGE_SIZE, "%lld\n", part->offset);
+}
+
+static DEVICE_ATTR(offset, S_IRUGO, mtd_partition_offset_show, NULL);
+
+static const struct attribute *mtd_partition_attrs[] = {
+ &dev_attr_offset.attr,
+ NULL
+};
+
+static int mtd_add_partition_attrs(struct mtd_part *new)
+{
+ int ret = sysfs_create_files(&new->mtd.dev.kobj, mtd_partition_attrs);
+ if (ret)
+ printk(KERN_WARNING
+ "mtd: failed to create partition attrs, err=%d\n", ret);
+ return ret;
+}
+
int mtd_add_partition(struct mtd_info *master, const char *name,
long long offset, long long length)
{
struct mtd_partition part;
- struct mtd_part *p, *new;
- uint64_t start, end;
+ struct mtd_part *new;
int ret = 0;
/* the direct offset is expected */
@@ -575,31 +606,15 @@
if (IS_ERR(new))
return PTR_ERR(new);
- start = offset;
- end = offset + length;
-
mutex_lock(&mtd_partitions_mutex);
- list_for_each_entry(p, &mtd_partitions, list)
- if (p->master == master) {
- if ((start >= p->offset) &&
- (start < (p->offset + p->mtd.size)))
- goto err_inv;
-
- if ((end >= p->offset) &&
- (end < (p->offset + p->mtd.size)))
- goto err_inv;
- }
-
list_add(&new->list, &mtd_partitions);
mutex_unlock(&mtd_partitions_mutex);
add_mtd_device(&new->mtd);
+ mtd_add_partition_attrs(new);
+
return ret;
-err_inv:
- mutex_unlock(&mtd_partitions_mutex);
- free_partition(new);
- return -EINVAL;
}
EXPORT_SYMBOL_GPL(mtd_add_partition);
@@ -612,6 +627,8 @@
list_for_each_entry_safe(slave, next, &mtd_partitions, list)
if ((slave->master == master) &&
(slave->mtd.index == partno)) {
+ sysfs_remove_files(&slave->mtd.dev.kobj,
+ mtd_partition_attrs);
ret = del_mtd_device(&slave->mtd);
if (ret < 0)
break;
@@ -631,8 +648,8 @@
* and registers slave MTD objects which are bound to the master according to
* the partition definitions.
*
- * We don't register the master, or expect the caller to have done so,
- * for reasons of data integrity.
+ * For historical reasons, this function's caller only registers the master
+ * if the MTD_PARTITIONED_MASTER config option is set.
*/
int add_mtd_partitions(struct mtd_info *master,
@@ -655,6 +672,7 @@
mutex_unlock(&mtd_partitions_mutex);
add_mtd_device(&slave->mtd);
+ mtd_add_partition_attrs(slave);
cur_offset = slave->offset + slave->mtd.size;
}
diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c
index d93c849..46010bd 100644
--- a/drivers/mtd/nand/atmel_nand.c
+++ b/drivers/mtd/nand/atmel_nand.c
@@ -485,7 +485,7 @@
for (i = 0; i < ecc_len; i++)
layout->eccpos[i] = oobsize - ecc_len + i;
- layout->oobfree[0].offset = 2;
+ layout->oobfree[0].offset = PMECC_OOB_RESERVED_BYTES;
layout->oobfree[0].length =
oobsize - ecc_len - layout->oobfree[0].offset;
}
@@ -1204,14 +1204,14 @@
goto err;
}
- regs_rom = platform_get_resource(pdev, IORESOURCE_MEM, 3);
- host->pmecc_rom_base = devm_ioremap_resource(&pdev->dev, regs_rom);
- if (IS_ERR(host->pmecc_rom_base)) {
- if (!host->has_no_lookup_table)
- /* Don't display the information again */
+ if (!host->has_no_lookup_table) {
+ regs_rom = platform_get_resource(pdev, IORESOURCE_MEM, 3);
+ host->pmecc_rom_base = devm_ioremap_resource(&pdev->dev,
+ regs_rom);
+ if (IS_ERR(host->pmecc_rom_base)) {
dev_err(host->dev, "Can not get I/O resource for ROM, will build a lookup table in runtime!\n");
-
- host->has_no_lookup_table = true;
+ host->has_no_lookup_table = true;
+ }
}
if (host->has_no_lookup_table) {
@@ -1254,7 +1254,8 @@
nand_chip->ecc.steps = mtd->writesize / sector_size;
nand_chip->ecc.total = nand_chip->ecc.bytes *
nand_chip->ecc.steps;
- if (nand_chip->ecc.total > mtd->oobsize - 2) {
+ if (nand_chip->ecc.total >
+ mtd->oobsize - PMECC_OOB_RESERVED_BYTES) {
dev_err(host->dev, "No room for ECC bytes\n");
err_no = -EINVAL;
goto err;
@@ -1719,7 +1720,7 @@
comp[index++] = &host->nfc->comp_cmd_done;
if (index == 0) {
- dev_err(host->dev, "Unkown interrupt flag: 0x%08x\n", flag);
+ dev_err(host->dev, "Unknown interrupt flag: 0x%08x\n", flag);
return -EINVAL;
}
@@ -1752,11 +1753,10 @@
cmd, addr, cycle0);
timeout = jiffies + msecs_to_jiffies(NFC_TIME_OUT_MS);
- while (nfc_cmd_readl(NFCADDR_CMD_NFCBUSY, host->nfc->base_cmd_regs)
- & NFCADDR_CMD_NFCBUSY) {
+ while (nfc_readl(host->nfc->hsmc_regs, SR) & NFC_SR_BUSY) {
if (time_after(jiffies, timeout)) {
dev_err(host->dev,
- "Time out to wait CMD_NFCBUSY ready!\n");
+ "Time out to wait for NFC ready!\n");
return -ETIMEDOUT;
}
}
diff --git a/drivers/mtd/nand/atmel_nand_ecc.h b/drivers/mtd/nand/atmel_nand_ecc.h
index d4035e3..668e735 100644
--- a/drivers/mtd/nand/atmel_nand_ecc.h
+++ b/drivers/mtd/nand/atmel_nand_ecc.h
@@ -152,4 +152,7 @@
/* Time out value for reading PMECC status register */
#define PMECC_MAX_TIMEOUT_MS 100
+/* Reserved bytes in oob area */
+#define PMECC_OOB_RESERVED_BYTES 2
+
#endif
diff --git a/drivers/mtd/nand/atmel_nand_nfc.h b/drivers/mtd/nand/atmel_nand_nfc.h
index 85b8ca6..4d5d262 100644
--- a/drivers/mtd/nand/atmel_nand_nfc.h
+++ b/drivers/mtd/nand/atmel_nand_nfc.h
@@ -35,6 +35,7 @@
#define NFC_CTRL_DISABLE (1 << 1)
#define ATMEL_HSMC_NFC_SR 0x08 /* NFC Status Register */
+#define NFC_SR_BUSY (1 << 8)
#define NFC_SR_XFR_DONE (1 << 16)
#define NFC_SR_CMD_DONE (1 << 17)
#define NFC_SR_DTOE (1 << 20)
diff --git a/drivers/mtd/nand/denali.c b/drivers/mtd/nand/denali.c
index f44c606..870c7fc 100644
--- a/drivers/mtd/nand/denali.c
+++ b/drivers/mtd/nand/denali.c
@@ -225,7 +225,6 @@
uint16_t Twhr[6] = {120, 80, 80, 60, 60, 60};
uint16_t Tcs[6] = {70, 35, 25, 25, 20, 15};
- uint16_t TclsRising = 1;
uint16_t data_invalid_rhoh, data_invalid_rloh, data_invalid;
uint16_t dv_window = 0;
uint16_t en_lo, en_hi;
@@ -276,8 +275,6 @@
re_2_re = CEIL_DIV(Trhz[mode], CLK_X);
we_2_re = CEIL_DIV(Twhr[mode], CLK_X);
cs_cnt = CEIL_DIV((Tcs[mode] - Trp[mode]), CLK_X);
- if (!TclsRising)
- cs_cnt = CEIL_DIV(Tcs[mode], CLK_X);
if (cs_cnt == 0)
cs_cnt = 1;
@@ -1536,6 +1533,9 @@
denali->nand.options |= NAND_SKIP_BBTSCAN;
denali->nand.ecc.mode = NAND_ECC_HW_SYNDROME;
+ /* no subpage writes on denali */
+ denali->nand.options |= NAND_NO_SUBPAGE_WRITE;
+
/*
* Denali Controller only support 15bit and 8bit ECC in MRST,
* so just let controller do 15bit ECC for MLC and 8bit ECC for
diff --git a/drivers/mtd/nand/fsl_ifc_nand.c b/drivers/mtd/nand/fsl_ifc_nand.c
index 4c05f4f..51394e5 100644
--- a/drivers/mtd/nand/fsl_ifc_nand.c
+++ b/drivers/mtd/nand/fsl_ifc_nand.c
@@ -317,7 +317,7 @@
/* wait for command complete flag or timeout */
wait_event_timeout(ctrl->nand_wait, ctrl->nand_stat,
- IFC_TIMEOUT_MSECS * HZ/1000);
+ msecs_to_jiffies(IFC_TIMEOUT_MSECS));
/* ctrl->nand_stat will be updated from IRQ context */
if (!ctrl->nand_stat)
@@ -860,7 +860,7 @@
/* wait for command complete flag or timeout */
wait_event_timeout(ctrl->nand_wait, ctrl->nand_stat,
- IFC_TIMEOUT_MSECS * HZ/1000);
+ msecs_to_jiffies(IFC_TIMEOUT_MSECS));
if (ctrl->nand_stat != IFC_NAND_EVTER_STAT_OPC)
printk(KERN_ERR "fsl-ifc: Failed to Initialise SRAM\n");
diff --git a/drivers/mtd/nand/fsmc_nand.c b/drivers/mtd/nand/fsmc_nand.c
index edfaa21..e58af4b 100644
--- a/drivers/mtd/nand/fsmc_nand.c
+++ b/drivers/mtd/nand/fsmc_nand.c
@@ -873,6 +873,7 @@
{
struct fsmc_nand_platform_data *pdata = dev_get_platdata(&pdev->dev);
u32 val;
+ int ret;
/* Set default NAND width to 8 bits */
pdata->width = 8;
@@ -891,8 +892,12 @@
sizeof(*pdata->nand_timings), GFP_KERNEL);
if (!pdata->nand_timings)
return -ENOMEM;
- of_property_read_u8_array(np, "timings", (u8 *)pdata->nand_timings,
+ ret = of_property_read_u8_array(np, "timings", (u8 *)pdata->nand_timings,
sizeof(*pdata->nand_timings));
+ if (ret) {
+ dev_info(&pdev->dev, "No timings in dts specified, using default timings!\n");
+ pdata->nand_timings = NULL;
+ }
/* Set default NAND bank to 0 */
pdata->bank = 0;
diff --git a/drivers/mtd/nand/gpmi-nand/gpmi-nand.c b/drivers/mtd/nand/gpmi-nand/gpmi-nand.c
index 33f3c3c..1b8f350 100644
--- a/drivers/mtd/nand/gpmi-nand/gpmi-nand.c
+++ b/drivers/mtd/nand/gpmi-nand/gpmi-nand.c
@@ -446,7 +446,7 @@
struct dma_async_tx_descriptor *desc)
{
struct completion *dma_c = &this->dma_done;
- int err;
+ unsigned long timeout;
init_completion(dma_c);
@@ -456,8 +456,8 @@
dma_async_issue_pending(get_dma_chan(this));
/* Wait for the interrupt from the DMA block. */
- err = wait_for_completion_timeout(dma_c, msecs_to_jiffies(1000));
- if (!err) {
+ timeout = wait_for_completion_timeout(dma_c, msecs_to_jiffies(1000));
+ if (!timeout) {
dev_err(this->dev, "DMA timeout, last DMA :%d\n",
this->last_dma_type);
gpmi_dump_info(this);
@@ -477,7 +477,7 @@
struct dma_async_tx_descriptor *desc)
{
struct completion *bch_c = &this->bch_done;
- int err;
+ unsigned long timeout;
/* Prepare to receive an interrupt from the BCH block. */
init_completion(bch_c);
@@ -486,8 +486,8 @@
start_dma_without_bch_irq(this, desc);
/* Wait for the interrupt from the BCH block. */
- err = wait_for_completion_timeout(bch_c, msecs_to_jiffies(1000));
- if (!err) {
+ timeout = wait_for_completion_timeout(bch_c, msecs_to_jiffies(1000));
+ if (!timeout) {
dev_err(this->dev, "BCH timeout, last DMA :%d\n",
this->last_dma_type);
gpmi_dump_info(this);
@@ -1950,7 +1950,9 @@
ret = nand_boot_init(this);
if (ret)
goto err_out;
- chip->scan_bbt(mtd);
+ ret = chip->scan_bbt(mtd);
+ if (ret)
+ goto err_out;
ppdata.of_node = this->pdev->dev.of_node;
ret = mtd_device_parse_register(mtd, NULL, &ppdata, NULL, 0);
diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c
index a8f550f..372e0e3 100644
--- a/drivers/mtd/nand/mxc_nand.c
+++ b/drivers/mtd/nand/mxc_nand.c
@@ -386,26 +386,51 @@
/* This function polls the NANDFC to wait for the basic operation to
* complete by checking the INT bit of config2 register.
*/
-static void wait_op_done(struct mxc_nand_host *host, int useirq)
+static int wait_op_done(struct mxc_nand_host *host, int useirq)
{
- int max_retries = 8000;
+ int ret = 0;
+
+ /*
+ * If operation is already complete, don't bother to setup an irq or a
+ * loop.
+ */
+ if (host->devtype_data->check_int(host))
+ return 0;
if (useirq) {
- if (!host->devtype_data->check_int(host)) {
- reinit_completion(&host->op_completion);
- irq_control(host, 1);
- wait_for_completion(&host->op_completion);
+ unsigned long timeout;
+
+ reinit_completion(&host->op_completion);
+
+ irq_control(host, 1);
+
+ timeout = wait_for_completion_timeout(&host->op_completion, HZ);
+ if (!timeout && !host->devtype_data->check_int(host)) {
+ dev_dbg(host->dev, "timeout waiting for irq\n");
+ ret = -ETIMEDOUT;
}
} else {
- while (max_retries-- > 0) {
- if (host->devtype_data->check_int(host))
+ int max_retries = 8000;
+ int done;
+
+ do {
+ udelay(1);
+
+ done = host->devtype_data->check_int(host);
+ if (done)
break;
- udelay(1);
+ } while (--max_retries);
+
+ if (!done) {
+ dev_dbg(host->dev, "timeout polling for completion\n");
+ ret = -ETIMEDOUT;
}
- if (max_retries < 0)
- pr_debug("%s: INT not set\n", __func__);
}
+
+ WARN_ONCE(ret < 0, "timeout! useirq=%d\n", useirq);
+
+ return ret;
}
static void send_cmd_v3(struct mxc_nand_host *host, uint16_t cmd, int useirq)
@@ -527,30 +552,17 @@
static void send_read_id_v3(struct mxc_nand_host *host)
{
- struct nand_chip *this = &host->nand;
-
/* Read ID into main buffer */
writel(NFC_ID, NFC_V3_LAUNCH);
wait_op_done(host, true);
memcpy32_fromio(host->data_buf, host->main_area0, 16);
-
- if (this->options & NAND_BUSWIDTH_16) {
- /* compress the ID info */
- host->data_buf[1] = host->data_buf[2];
- host->data_buf[2] = host->data_buf[4];
- host->data_buf[3] = host->data_buf[6];
- host->data_buf[4] = host->data_buf[8];
- host->data_buf[5] = host->data_buf[10];
- }
}
/* Request the NANDFC to perform a read of the NAND device ID. */
static void send_read_id_v1_v2(struct mxc_nand_host *host)
{
- struct nand_chip *this = &host->nand;
-
/* NANDFC buffer 0 is used for device ID output */
writew(host->active_cs << 4, NFC_V1_V2_BUF_ADDR);
@@ -560,15 +572,6 @@
wait_op_done(host, true);
memcpy32_fromio(host->data_buf, host->main_area0, 16);
-
- if (this->options & NAND_BUSWIDTH_16) {
- /* compress the ID info */
- host->data_buf[1] = host->data_buf[2];
- host->data_buf[2] = host->data_buf[4];
- host->data_buf[3] = host->data_buf[6];
- host->data_buf[4] = host->data_buf[8];
- host->data_buf[5] = host->data_buf[10];
- }
}
static uint16_t get_dev_status_v3(struct mxc_nand_host *host)
@@ -694,9 +697,17 @@
if (host->status_request)
return host->devtype_data->get_dev_status(host) & 0xFF;
- ret = *(uint8_t *)(host->data_buf + host->buf_start);
- host->buf_start++;
+ if (nand_chip->options & NAND_BUSWIDTH_16) {
+ /* only take the lower byte of each word */
+ ret = *(uint16_t *)(host->data_buf + host->buf_start);
+ host->buf_start += 2;
+ } else {
+ ret = *(uint8_t *)(host->data_buf + host->buf_start);
+ host->buf_start++;
+ }
+
+ pr_debug("%s: ret=0x%hhx (start=%u)\n", __func__, ret, host->buf_start);
return ret;
}
@@ -825,6 +836,12 @@
}
}
+/*
+ * MXC NANDFC can only perform full page+spare or spare-only read/write. When
+ * the upper layers perform a read/write buf operation, the saved column address
+ * is used to index into the full page. So usually this function is called with
+ * column == 0 (unless no column cycle is needed indicated by column == -1)
+ */
static void mxc_do_addr_cycle(struct mtd_info *mtd, int column, int page_addr)
{
struct nand_chip *nand_chip = mtd->priv;
@@ -832,16 +849,13 @@
/* Write out column address, if necessary */
if (column != -1) {
- /*
- * MXC NANDFC can only perform full page+spare or
- * spare-only read/write. When the upper layers
- * perform a read/write buf operation, the saved column
- * address is used to index into the full page.
- */
- host->devtype_data->send_addr(host, 0, page_addr == -1);
+ host->devtype_data->send_addr(host, column & 0xff,
+ page_addr == -1);
if (mtd->writesize > 512)
/* another col addr cycle for 2k page */
- host->devtype_data->send_addr(host, 0, false);
+ host->devtype_data->send_addr(host,
+ (column >> 8) & 0xff,
+ false);
}
/* Write out page address, if necessary */
@@ -903,7 +917,7 @@
struct mxc_nand_host *host = nand_chip->priv;
uint16_t config1 = 0;
- if (nand_chip->ecc.mode == NAND_ECC_HW)
+ if (nand_chip->ecc.mode == NAND_ECC_HW && mtd->writesize)
config1 |= NFC_V1_V2_CONFIG1_ECC_EN;
if (!host->devtype_data->irqpending_quirk)
@@ -931,9 +945,6 @@
struct mxc_nand_host *host = nand_chip->priv;
uint16_t config1 = 0;
- if (nand_chip->ecc.mode == NAND_ECC_HW)
- config1 |= NFC_V1_V2_CONFIG1_ECC_EN;
-
config1 |= NFC_V2_CONFIG1_FP_INT;
if (!host->devtype_data->irqpending_quirk)
@@ -942,6 +953,9 @@
if (mtd->writesize) {
uint16_t pages_per_block = mtd->erasesize / mtd->writesize;
+ if (nand_chip->ecc.mode == NAND_ECC_HW)
+ config1 |= NFC_V1_V2_CONFIG1_ECC_EN;
+
host->eccsize = get_eccsize(mtd);
if (host->eccsize == 4)
config1 |= NFC_V2_CONFIG1_ECC_MODE_4;
@@ -999,9 +1013,6 @@
NFC_V3_CONFIG2_INT_MSK |
NFC_V3_CONFIG2_NUM_ADDR_PHASE0;
- if (chip->ecc.mode == NAND_ECC_HW)
- config2 |= NFC_V3_CONFIG2_ECC_EN;
-
addr_phases = fls(chip->pagemask) >> 3;
if (mtd->writesize == 2048) {
@@ -1016,6 +1027,9 @@
}
if (mtd->writesize) {
+ if (chip->ecc.mode == NAND_ECC_HW)
+ config2 |= NFC_V3_CONFIG2_ECC_EN;
+
config2 |= NFC_V3_CONFIG2_PPB(
ffs(mtd->erasesize / mtd->writesize) - 6,
host->devtype_data->ppb_shift);
@@ -1066,6 +1080,9 @@
host->status_request = true;
host->devtype_data->send_cmd(host, command, true);
+ WARN_ONCE(column != -1 || page_addr != -1,
+ "Unexpected column/row value (cmd=%u, col=%d, row=%d)\n",
+ command, column, page_addr);
mxc_do_addr_cycle(mtd, column, page_addr);
break;
@@ -1079,7 +1096,10 @@
command = NAND_CMD_READ0; /* only READ0 is valid */
host->devtype_data->send_cmd(host, command, false);
- mxc_do_addr_cycle(mtd, column, page_addr);
+ WARN_ONCE(column < 0,
+ "Unexpected column/row value (cmd=%u, col=%d, row=%d)\n",
+ command, column, page_addr);
+ mxc_do_addr_cycle(mtd, 0, page_addr);
if (mtd->writesize > 512)
host->devtype_data->send_cmd(host,
@@ -1100,7 +1120,10 @@
host->buf_start = column;
host->devtype_data->send_cmd(host, command, false);
- mxc_do_addr_cycle(mtd, column, page_addr);
+ WARN_ONCE(column < -1,
+ "Unexpected column/row value (cmd=%u, col=%d, row=%d)\n",
+ command, column, page_addr);
+ mxc_do_addr_cycle(mtd, 0, page_addr);
break;
case NAND_CMD_PAGEPROG:
@@ -1108,6 +1131,9 @@
copy_spare(mtd, false);
host->devtype_data->send_page(mtd, NFC_INPUT);
host->devtype_data->send_cmd(host, command, true);
+ WARN_ONCE(column != -1 || page_addr != -1,
+ "Unexpected column/row value (cmd=%u, col=%d, row=%d)\n",
+ command, column, page_addr);
mxc_do_addr_cycle(mtd, column, page_addr);
break;
@@ -1115,15 +1141,29 @@
host->devtype_data->send_cmd(host, command, true);
mxc_do_addr_cycle(mtd, column, page_addr);
host->devtype_data->send_read_id(host);
- host->buf_start = column;
+ host->buf_start = 0;
break;
case NAND_CMD_ERASE1:
case NAND_CMD_ERASE2:
host->devtype_data->send_cmd(host, command, false);
+ WARN_ONCE(column != -1,
+ "Unexpected column value (cmd=%u, col=%d)\n",
+ command, column);
mxc_do_addr_cycle(mtd, column, page_addr);
break;
+ case NAND_CMD_PARAM:
+ host->devtype_data->send_cmd(host, command, false);
+ mxc_do_addr_cycle(mtd, column, page_addr);
+ host->devtype_data->send_page(mtd, NFC_OUTPUT);
+ memcpy32_fromio(host->data_buf, host->main_area0, 512);
+ host->buf_start = 0;
+ break;
+ default:
+ WARN_ONCE(1, "Unimplemented command (cmd=%u)\n",
+ command);
+ break;
}
}
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index df7eb4f..c2e1232 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -386,7 +386,7 @@
uint8_t buf[2] = { 0, 0 };
int ret = 0, res, i = 0;
- ops.datbuf = NULL;
+ memset(&ops, 0, sizeof(ops));
ops.oobbuf = buf;
ops.ooboffs = chip->badblockpos;
if (chip->options & NAND_BUSWIDTH_16) {
@@ -566,6 +566,25 @@
EXPORT_SYMBOL_GPL(nand_wait_ready);
/**
+ * nand_wait_status_ready - [GENERIC] Wait for the ready status after commands.
+ * @mtd: MTD device structure
+ * @timeo: Timeout in ms
+ *
+ * Wait for status ready (i.e. command done) or timeout.
+ */
+static void nand_wait_status_ready(struct mtd_info *mtd, unsigned long timeo)
+{
+ register struct nand_chip *chip = mtd->priv;
+
+ timeo = jiffies + msecs_to_jiffies(timeo);
+ do {
+ if ((chip->read_byte(mtd) & NAND_STATUS_READY))
+ break;
+ touch_softlockup_watchdog();
+ } while (time_before(jiffies, timeo));
+};
+
+/**
* nand_command - [DEFAULT] Send command to NAND device
* @mtd: MTD device structure
* @command: the command to be sent
@@ -643,8 +662,8 @@
NAND_CTRL_CLE | NAND_CTRL_CHANGE);
chip->cmd_ctrl(mtd,
NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE);
- while (!(chip->read_byte(mtd) & NAND_STATUS_READY))
- ;
+ /* EZ-NAND can take upto 250ms as per ONFi v4.0 */
+ nand_wait_status_ready(mtd, 250);
return;
/* This applies to read commands */
@@ -740,8 +759,8 @@
NAND_NCE | NAND_CLE | NAND_CTRL_CHANGE);
chip->cmd_ctrl(mtd, NAND_CMD_NONE,
NAND_NCE | NAND_CTRL_CHANGE);
- while (!(chip->read_byte(mtd) & NAND_STATUS_READY))
- ;
+ /* EZ-NAND can take upto 250ms as per ONFi v4.0 */
+ nand_wait_status_ready(mtd, 250);
return;
case NAND_CMD_RNDOUT:
@@ -968,7 +987,7 @@
__func__, (unsigned long long)ofs, len);
if (check_offs_len(mtd, ofs, len))
- ret = -EINVAL;
+ return -EINVAL;
/* Align to last block address if size addresses end of the device */
if (ofs + len == mtd->size)
@@ -1031,7 +1050,7 @@
__func__, (unsigned long long)ofs, len);
if (check_offs_len(mtd, ofs, len))
- ret = -EINVAL;
+ return -EINVAL;
nand_get_device(mtd, FL_LOCKING);
@@ -1716,9 +1735,9 @@
int ret;
nand_get_device(mtd, FL_READING);
+ memset(&ops, 0, sizeof(ops));
ops.len = len;
ops.datbuf = buf;
- ops.oobbuf = NULL;
ops.mode = MTD_OPS_PLACE_OOB;
ret = nand_do_read_ops(mtd, from, &ops);
*retlen = ops.retlen;
@@ -2124,7 +2143,7 @@
/**
- * nand_write_subpage_hwecc - [REPLACABLE] hardware ECC based subpage write
+ * nand_write_subpage_hwecc - [REPLACEABLE] hardware ECC based subpage write
* @mtd: mtd info structure
* @chip: nand chip info structure
* @offset: column address of subpage within the page
@@ -2508,9 +2527,9 @@
/* Grab the device */
panic_nand_get_device(chip, mtd, FL_WRITING);
+ memset(&ops, 0, sizeof(ops));
ops.len = len;
ops.datbuf = (uint8_t *)buf;
- ops.oobbuf = NULL;
ops.mode = MTD_OPS_PLACE_OOB;
ret = nand_do_write_ops(mtd, to, &ops);
@@ -2536,9 +2555,9 @@
int ret;
nand_get_device(mtd, FL_WRITING);
+ memset(&ops, 0, sizeof(ops));
ops.len = len;
ops.datbuf = (uint8_t *)buf;
- ops.oobbuf = NULL;
ops.mode = MTD_OPS_PLACE_OOB;
ret = nand_do_write_ops(mtd, to, &ops);
*retlen = ops.retlen;
diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c
index 10b1f7a..a4615fc 100644
--- a/drivers/mtd/nand/pxa3xx_nand.c
+++ b/drivers/mtd/nand/pxa3xx_nand.c
@@ -38,8 +38,8 @@
#include <linux/platform_data/mtd-nand-pxa3xx.h>
-#define CHIP_DELAY_TIMEOUT (2 * HZ/10)
-#define NAND_STOP_DELAY (2 * HZ/50)
+#define CHIP_DELAY_TIMEOUT msecs_to_jiffies(200)
+#define NAND_STOP_DELAY msecs_to_jiffies(40)
#define PAGE_CHUNK_SIZE (2048)
/*
@@ -605,11 +605,24 @@
{}
#endif
+static irqreturn_t pxa3xx_nand_irq_thread(int irq, void *data)
+{
+ struct pxa3xx_nand_info *info = data;
+
+ handle_data_pio(info);
+
+ info->state = STATE_CMD_DONE;
+ nand_writel(info, NDSR, NDSR_WRDREQ | NDSR_RDDREQ);
+
+ return IRQ_HANDLED;
+}
+
static irqreturn_t pxa3xx_nand_irq(int irq, void *devid)
{
struct pxa3xx_nand_info *info = devid;
unsigned int status, is_completed = 0, is_ready = 0;
unsigned int ready, cmd_done;
+ irqreturn_t ret = IRQ_HANDLED;
if (info->cs == 0) {
ready = NDSR_FLASH_RDY;
@@ -651,7 +664,8 @@
} else {
info->state = (status & NDSR_RDDREQ) ?
STATE_PIO_READING : STATE_PIO_WRITING;
- handle_data_pio(info);
+ ret = IRQ_WAKE_THREAD;
+ goto NORMAL_IRQ_EXIT;
}
}
if (status & cmd_done) {
@@ -692,7 +706,7 @@
if (is_ready)
complete(&info->dev_ready);
NORMAL_IRQ_EXIT:
- return IRQ_HANDLED;
+ return ret;
}
static inline int is_buf_blank(uint8_t *buf, size_t len)
@@ -951,7 +965,7 @@
{
struct pxa3xx_nand_host *host = mtd->priv;
struct pxa3xx_nand_info *info = host->info_data;
- int ret, exec_cmd;
+ int exec_cmd;
/*
* if this is a x16 device ,then convert the input
@@ -983,9 +997,8 @@
info->need_wait = 1;
pxa3xx_nand_start(info);
- ret = wait_for_completion_timeout(&info->cmd_complete,
- CHIP_DELAY_TIMEOUT);
- if (!ret) {
+ if (!wait_for_completion_timeout(&info->cmd_complete,
+ CHIP_DELAY_TIMEOUT)) {
dev_err(&info->pdev->dev, "Wait time out!!!\n");
/* Stop State Machine for next command cycle */
pxa3xx_nand_stop(info);
@@ -1000,7 +1013,7 @@
{
struct pxa3xx_nand_host *host = mtd->priv;
struct pxa3xx_nand_info *info = host->info_data;
- int ret, exec_cmd, ext_cmd_type;
+ int exec_cmd, ext_cmd_type;
/*
* if this is a x16 device then convert the input
@@ -1063,9 +1076,8 @@
init_completion(&info->cmd_complete);
pxa3xx_nand_start(info);
- ret = wait_for_completion_timeout(&info->cmd_complete,
- CHIP_DELAY_TIMEOUT);
- if (!ret) {
+ if (!wait_for_completion_timeout(&info->cmd_complete,
+ CHIP_DELAY_TIMEOUT)) {
dev_err(&info->pdev->dev, "Wait time out!!!\n");
/* Stop State Machine for next command cycle */
pxa3xx_nand_stop(info);
@@ -1198,13 +1210,11 @@
{
struct pxa3xx_nand_host *host = mtd->priv;
struct pxa3xx_nand_info *info = host->info_data;
- int ret;
if (info->need_wait) {
- ret = wait_for_completion_timeout(&info->dev_ready,
- CHIP_DELAY_TIMEOUT);
info->need_wait = 0;
- if (!ret) {
+ if (!wait_for_completion_timeout(&info->dev_ready,
+ CHIP_DELAY_TIMEOUT)) {
dev_err(&info->pdev->dev, "Ready time out!!!\n");
return NAND_STATUS_FAIL;
}
@@ -1508,6 +1518,8 @@
return ret;
}
+ memset(pxa3xx_flash_ids, 0, sizeof(pxa3xx_flash_ids));
+
pxa3xx_flash_ids[0].name = f->name;
pxa3xx_flash_ids[0].dev_id = (f->chip_id >> 8) & 0xffff;
pxa3xx_flash_ids[0].pagesize = f->page_size;
@@ -1710,7 +1722,9 @@
/* initialize all interrupts to be disabled */
disable_int(info, NDSR_MASK);
- ret = request_irq(irq, pxa3xx_nand_irq, 0, pdev->name, info);
+ ret = request_threaded_irq(irq, pxa3xx_nand_irq,
+ pxa3xx_nand_irq_thread, IRQF_ONESHOT,
+ pdev->name, info);
if (ret < 0) {
dev_err(&pdev->dev, "failed to request IRQ\n");
goto fail_free_buf;
diff --git a/drivers/mtd/nand/s3c2410.c b/drivers/mtd/nand/s3c2410.c
index 35aef5e..0e02be4 100644
--- a/drivers/mtd/nand/s3c2410.c
+++ b/drivers/mtd/nand/s3c2410.c
@@ -948,8 +948,6 @@
cpu_type = platform_get_device_id(pdev)->driver_data;
- pr_debug("s3c2410_nand_probe(%p)\n", pdev);
-
info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
if (info == NULL) {
err = -ENOMEM;
@@ -1045,7 +1043,6 @@
s3c2410_nand_clk_set_state(info, CLOCK_SUSPEND);
}
- pr_debug("initialised ok\n");
return 0;
exit_error:
diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c
index 635ee00..43b3392 100644
--- a/drivers/mtd/onenand/onenand_base.c
+++ b/drivers/mtd/onenand/onenand_base.c
@@ -1743,7 +1743,6 @@
struct onenand_chip *this = mtd->priv;
int column, subpage;
int written = 0;
- int ret = 0;
if (this->state == FL_PM_SUSPENDED)
return -EBUSY;
@@ -1786,15 +1785,10 @@
onenand_panic_wait(mtd);
/* In partial page write we don't update bufferram */
- onenand_update_bufferram(mtd, to, !ret && !subpage);
+ onenand_update_bufferram(mtd, to, !subpage);
if (ONENAND_IS_2PLANE(this)) {
ONENAND_SET_BUFFERRAM1(this);
- onenand_update_bufferram(mtd, to + this->writesize, !ret && !subpage);
- }
-
- if (ret) {
- printk(KERN_ERR "%s: write failed %d\n", __func__, ret);
- break;
+ onenand_update_bufferram(mtd, to + this->writesize, !subpage);
}
written += thislen;
@@ -1808,7 +1802,7 @@
}
*retlen = written;
- return ret;
+ return 0;
}
/**
diff --git a/drivers/mtd/spi-nor/fsl-quadspi.c b/drivers/mtd/spi-nor/fsl-quadspi.c
index 1c7308c..5d5d362 100644
--- a/drivers/mtd/spi-nor/fsl-quadspi.c
+++ b/drivers/mtd/spi-nor/fsl-quadspi.c
@@ -460,8 +460,7 @@
writel((seqid << QUADSPI_IPCR_SEQID_SHIFT) | len, base + QUADSPI_IPCR);
/* Wait for the interrupt. */
- err = wait_for_completion_timeout(&q->c, msecs_to_jiffies(1000));
- if (!err) {
+ if (!wait_for_completion_timeout(&q->c, msecs_to_jiffies(1000))) {
dev_err(q->dev,
"cmd 0x%.2x timeout, addr@%.8x, FR:0x%.8x, SR:0x%.8x\n",
cmd, addr, readl(base + QUADSPI_FR),
@@ -830,27 +829,27 @@
ret = clk_prepare_enable(q->clk_en);
if (ret) {
- dev_err(dev, "can not enable the qspi_en clock\n");
+ dev_err(dev, "cannot enable the qspi_en clock: %d\n", ret);
return ret;
}
ret = clk_prepare_enable(q->clk);
if (ret) {
- dev_err(dev, "can not enable the qspi clock\n");
+ dev_err(dev, "cannot enable the qspi clock: %d\n", ret);
goto clk_failed;
}
/* find the irq */
ret = platform_get_irq(pdev, 0);
if (ret < 0) {
- dev_err(dev, "failed to get the irq\n");
+ dev_err(dev, "failed to get the irq: %d\n", ret);
goto irq_failed;
}
ret = devm_request_irq(dev, ret,
fsl_qspi_irq_handler, 0, pdev->name, q);
if (ret) {
- dev_err(dev, "failed to request irq.\n");
+ dev_err(dev, "failed to request irq: %d\n", ret);
goto irq_failed;
}
diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c
index b6a5a0c..14a5d23 100644
--- a/drivers/mtd/spi-nor/spi-nor.c
+++ b/drivers/mtd/spi-nor/spi-nor.c
@@ -369,17 +369,13 @@
return ret;
}
-static int spi_nor_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
+static int stm_lock(struct spi_nor *nor, loff_t ofs, uint64_t len)
{
- struct spi_nor *nor = mtd_to_spi_nor(mtd);
+ struct mtd_info *mtd = nor->mtd;
uint32_t offset = ofs;
uint8_t status_old, status_new;
int ret = 0;
- ret = spi_nor_lock_and_prep(nor, SPI_NOR_OPS_LOCK);
- if (ret)
- return ret;
-
status_old = read_sr(nor);
if (offset < mtd->size - (mtd->size / 2))
@@ -402,26 +398,18 @@
(status_old & (SR_BP2 | SR_BP1 | SR_BP0))) {
write_enable(nor);
ret = write_sr(nor, status_new);
- if (ret)
- goto err;
}
-err:
- spi_nor_unlock_and_unprep(nor, SPI_NOR_OPS_LOCK);
return ret;
}
-static int spi_nor_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
+static int stm_unlock(struct spi_nor *nor, loff_t ofs, uint64_t len)
{
- struct spi_nor *nor = mtd_to_spi_nor(mtd);
+ struct mtd_info *mtd = nor->mtd;
uint32_t offset = ofs;
uint8_t status_old, status_new;
int ret = 0;
- ret = spi_nor_lock_and_prep(nor, SPI_NOR_OPS_UNLOCK);
- if (ret)
- return ret;
-
status_old = read_sr(nor);
if (offset+len > mtd->size - (mtd->size / 64))
@@ -444,15 +432,41 @@
(status_old & (SR_BP2 | SR_BP1 | SR_BP0))) {
write_enable(nor);
ret = write_sr(nor, status_new);
- if (ret)
- goto err;
}
-err:
+ return ret;
+}
+
+static int spi_nor_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
+{
+ struct spi_nor *nor = mtd_to_spi_nor(mtd);
+ int ret;
+
+ ret = spi_nor_lock_and_prep(nor, SPI_NOR_OPS_LOCK);
+ if (ret)
+ return ret;
+
+ ret = nor->flash_lock(nor, ofs, len);
+
spi_nor_unlock_and_unprep(nor, SPI_NOR_OPS_UNLOCK);
return ret;
}
+static int spi_nor_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
+{
+ struct spi_nor *nor = mtd_to_spi_nor(mtd);
+ int ret;
+
+ ret = spi_nor_lock_and_prep(nor, SPI_NOR_OPS_UNLOCK);
+ if (ret)
+ return ret;
+
+ ret = nor->flash_unlock(nor, ofs, len);
+
+ spi_nor_unlock_and_unprep(nor, SPI_NOR_OPS_LOCK);
+ return ret;
+}
+
/* Used when the "_ext_id" is two bytes at most */
#define INFO(_jedec_id, _ext_id, _sector_size, _n_sectors, _flags) \
((kernel_ulong_t)&(struct flash_info) { \
@@ -524,6 +538,7 @@
{ "en25q64", INFO(0x1c3017, 0, 64 * 1024, 128, SECT_4K) },
{ "en25qh128", INFO(0x1c7018, 0, 64 * 1024, 256, 0) },
{ "en25qh256", INFO(0x1c7019, 0, 64 * 1024, 512, 0) },
+ { "en25s64", INFO(0x1c3817, 0, 64 * 1024, 128, 0) },
/* ESMT */
{ "f25l32pa", INFO(0x8c2016, 0, 64 * 1024, 64, SECT_4K) },
@@ -553,6 +568,7 @@
{ "mx25l3205d", INFO(0xc22016, 0, 64 * 1024, 64, 0) },
{ "mx25l3255e", INFO(0xc29e16, 0, 64 * 1024, 64, SECT_4K) },
{ "mx25l6405d", INFO(0xc22017, 0, 64 * 1024, 128, 0) },
+ { "mx25u6435f", INFO(0xc22537, 0, 64 * 1024, 128, SECT_4K) },
{ "mx25l12805d", INFO(0xc22018, 0, 64 * 1024, 256, 0) },
{ "mx25l12855e", INFO(0xc22618, 0, 64 * 1024, 256, 0) },
{ "mx25l25635e", INFO(0xc22019, 0, 64 * 1024, 512, 0) },
@@ -648,6 +664,7 @@
{ "m25px80", INFO(0x207114, 0, 64 * 1024, 16, 0) },
/* Winbond -- w25x "blocks" are 64K, "sectors" are 4KiB */
+ { "w25x05", INFO(0xef3010, 0, 64 * 1024, 1, SECT_4K) },
{ "w25x10", INFO(0xef3011, 0, 64 * 1024, 2, SECT_4K) },
{ "w25x20", INFO(0xef3012, 0, 64 * 1024, 4, SECT_4K) },
{ "w25x40", INFO(0xef3013, 0, 64 * 1024, 8, SECT_4K) },
@@ -658,6 +675,7 @@
{ "w25q32dw", INFO(0xef6016, 0, 64 * 1024, 64, SECT_4K) },
{ "w25x64", INFO(0xef3017, 0, 64 * 1024, 128, SECT_4K) },
{ "w25q64", INFO(0xef4017, 0, 64 * 1024, 128, SECT_4K) },
+ { "w25q64dw", INFO(0xef6017, 0, 64 * 1024, 128, SECT_4K) },
{ "w25q80", INFO(0xef5014, 0, 64 * 1024, 16, SECT_4K) },
{ "w25q80bl", INFO(0xef4014, 0, 64 * 1024, 16, SECT_4K) },
{ "w25q128", INFO(0xef4018, 0, 64 * 1024, 256, SECT_4K) },
@@ -1045,6 +1063,11 @@
/* nor protection support for STmicro chips */
if (JEDEC_MFR(info) == CFI_MFR_ST) {
+ nor->flash_lock = stm_lock;
+ nor->flash_unlock = stm_unlock;
+ }
+
+ if (nor->flash_lock && nor->flash_unlock) {
mtd->_lock = spi_nor_lock;
mtd->_unlock = spi_nor_unlock;
}
diff --git a/drivers/mtd/tests/mtd_nandecctest.c b/drivers/mtd/tests/mtd_nandecctest.c
index e579f90..7931615 100644
--- a/drivers/mtd/tests/mtd_nandecctest.c
+++ b/drivers/mtd/tests/mtd_nandecctest.c
@@ -9,6 +9,8 @@
#include <linux/slab.h>
#include <linux/mtd/nand_ecc.h>
+#include "mtd_test.h"
+
/*
* Test the implementation for software ECC
*
@@ -274,6 +276,10 @@
}
pr_info("ok - %s-%zd\n",
nand_ecc_test[i].name, size);
+
+ err = mtdtest_relax();
+ if (err)
+ break;
}
error:
kfree(error_data);
diff --git a/drivers/mtd/tests/mtd_test.h b/drivers/mtd/tests/mtd_test.h
index f437c77..4b7bee1 100644
--- a/drivers/mtd/tests/mtd_test.h
+++ b/drivers/mtd/tests/mtd_test.h
@@ -1,4 +1,16 @@
#include <linux/mtd/mtd.h>
+#include <linux/sched.h>
+
+static inline int mtdtest_relax(void)
+{
+ cond_resched();
+ if (signal_pending(current)) {
+ pr_info("aborting test due to pending signal!\n");
+ return -EINTR;
+ }
+
+ return 0;
+}
int mtdtest_erase_eraseblock(struct mtd_info *mtd, unsigned int ebnum);
int mtdtest_scan_for_bad_eraseblocks(struct mtd_info *mtd, unsigned char *bbt,
diff --git a/drivers/mtd/tests/nandbiterrs.c b/drivers/mtd/tests/nandbiterrs.c
index 273f7e5..09a4cca 100644
--- a/drivers/mtd/tests/nandbiterrs.c
+++ b/drivers/mtd/tests/nandbiterrs.c
@@ -320,6 +320,10 @@
break;
}
+ err = mtdtest_relax();
+ if (err)
+ break;
+
opno++;
}
diff --git a/drivers/mtd/tests/oobtest.c b/drivers/mtd/tests/oobtest.c
index 5e06118..8e8525f 100644
--- a/drivers/mtd/tests/oobtest.c
+++ b/drivers/mtd/tests/oobtest.c
@@ -70,7 +70,7 @@
int i;
struct mtd_oob_ops ops;
int err = 0;
- loff_t addr = ebnum * mtd->erasesize;
+ loff_t addr = (loff_t)ebnum * mtd->erasesize;
prandom_bytes_state(&rnd_state, writebuf, use_len_max * pgcnt);
for (i = 0; i < pgcnt; ++i, addr += mtd->writesize) {
@@ -112,7 +112,10 @@
return err;
if (i % 256 == 0)
pr_info("written up to eraseblock %u\n", i);
- cond_resched();
+
+ err = mtdtest_relax();
+ if (err)
+ return err;
}
pr_info("written %u eraseblocks\n", i);
return 0;
@@ -141,6 +144,31 @@
return bitflips;
}
+/*
+ * Compare with 0xff and show the address, offset and data bytes at
+ * comparison failure. Return number of bitflips encountered.
+ */
+static size_t memffshow(loff_t addr, loff_t offset, const void *cs,
+ size_t count)
+{
+ const unsigned char *su1;
+ int res;
+ size_t i = 0;
+ size_t bitflips = 0;
+
+ for (su1 = cs; 0 < count; ++su1, count--, i++) {
+ res = *su1 ^ 0xff;
+ if (res) {
+ pr_info("error @addr[0x%lx:0x%lx] 0x%x -> 0xff diff 0x%x\n",
+ (unsigned long)addr, (unsigned long)offset + i,
+ *su1, res);
+ bitflips += hweight8(res);
+ }
+ }
+
+ return bitflips;
+}
+
static int verify_eraseblock(int ebnum)
{
int i;
@@ -203,6 +231,15 @@
bitflips = memcmpshow(addr, readbuf + use_offset,
writebuf + (use_len_max * i) + use_offset,
use_len);
+
+ /* verify pre-offset area for 0xff */
+ bitflips += memffshow(addr, 0, readbuf, use_offset);
+
+ /* verify post-(use_offset + use_len) area for 0xff */
+ k = use_offset + use_len;
+ bitflips += memffshow(addr, k, readbuf + k,
+ mtd->ecclayout->oobavail - k);
+
if (bitflips > bitflip_limit) {
pr_err("error: verify failed at %#llx\n",
(long long)addr);
@@ -212,34 +249,8 @@
return -1;
}
} else if (bitflips) {
- pr_info("ignoring error as within bitflip_limit\n");
+ pr_info("ignoring errors as within bitflip limit\n");
}
-
- for (k = 0; k < use_offset; ++k)
- if (readbuf[k] != 0xff) {
- pr_err("error: verify 0xff "
- "failed at %#llx\n",
- (long long)addr);
- errcnt += 1;
- if (errcnt > 1000) {
- pr_err("error: too "
- "many errors\n");
- return -1;
- }
- }
- for (k = use_offset + use_len;
- k < mtd->ecclayout->oobavail; ++k)
- if (readbuf[k] != 0xff) {
- pr_err("error: verify 0xff "
- "failed at %#llx\n",
- (long long)addr);
- errcnt += 1;
- if (errcnt > 1000) {
- pr_err("error: too "
- "many errors\n");
- return -1;
- }
- }
}
if (vary_offset)
do_vary_offset();
@@ -310,7 +321,10 @@
return err;
if (i % 256 == 0)
pr_info("verified up to eraseblock %u\n", i);
- cond_resched();
+
+ err = mtdtest_relax();
+ if (err)
+ return err;
}
pr_info("verified %u eraseblocks\n", i);
return 0;
@@ -421,7 +435,10 @@
goto out;
if (i % 256 == 0)
pr_info("verified up to eraseblock %u\n", i);
- cond_resched();
+
+ err = mtdtest_relax();
+ if (err)
+ goto out;
}
pr_info("verified %u eraseblocks\n", i);
@@ -634,7 +651,11 @@
goto out;
if (i % 256 == 0)
pr_info("written up to eraseblock %u\n", i);
- cond_resched();
+
+ err = mtdtest_relax();
+ if (err)
+ goto out;
+
addr += mtd->writesize;
}
}
@@ -672,7 +693,10 @@
}
if (i % 256 == 0)
pr_info("verified up to eraseblock %u\n", i);
- cond_resched();
+
+ err = mtdtest_relax();
+ if (err)
+ goto out;
}
pr_info("verified %u eraseblocks\n", i);
diff --git a/drivers/mtd/tests/pagetest.c b/drivers/mtd/tests/pagetest.c
index 88296e8..ba1890d 100644
--- a/drivers/mtd/tests/pagetest.c
+++ b/drivers/mtd/tests/pagetest.c
@@ -407,7 +407,10 @@
goto out;
if (i % 256 == 0)
pr_info("written up to eraseblock %u\n", i);
- cond_resched();
+
+ err = mtdtest_relax();
+ if (err)
+ goto out;
}
pr_info("written %u eraseblocks\n", i);
@@ -422,7 +425,10 @@
goto out;
if (i % 256 == 0)
pr_info("verified up to eraseblock %u\n", i);
- cond_resched();
+
+ err = mtdtest_relax();
+ if (err)
+ goto out;
}
pr_info("verified %u eraseblocks\n", i);
diff --git a/drivers/mtd/tests/readtest.c b/drivers/mtd/tests/readtest.c
index a54cf15..a3196b7 100644
--- a/drivers/mtd/tests/readtest.c
+++ b/drivers/mtd/tests/readtest.c
@@ -190,7 +190,10 @@
if (!err)
err = ret;
}
- cond_resched();
+
+ err = mtdtest_relax();
+ if (err)
+ goto out;
}
if (err)
diff --git a/drivers/mtd/tests/speedtest.c b/drivers/mtd/tests/speedtest.c
index 5ee9f70..5a6f31a 100644
--- a/drivers/mtd/tests/speedtest.c
+++ b/drivers/mtd/tests/speedtest.c
@@ -185,7 +185,7 @@
(finish.tv_usec - start.tv_usec) / 1000;
if (ms == 0)
return 0;
- k = goodebcnt * (mtd->erasesize / 1024) * 1000;
+ k = (uint64_t)goodebcnt * (mtd->erasesize / 1024) * 1000;
do_div(k, ms);
return k;
}
@@ -269,7 +269,10 @@
err = write_eraseblock(i);
if (err)
goto out;
- cond_resched();
+
+ err = mtdtest_relax();
+ if (err)
+ goto out;
}
stop_timing();
speed = calc_speed();
@@ -284,7 +287,10 @@
err = read_eraseblock(i);
if (err)
goto out;
- cond_resched();
+
+ err = mtdtest_relax();
+ if (err)
+ goto out;
}
stop_timing();
speed = calc_speed();
@@ -303,7 +309,10 @@
err = write_eraseblock_by_page(i);
if (err)
goto out;
- cond_resched();
+
+ err = mtdtest_relax();
+ if (err)
+ goto out;
}
stop_timing();
speed = calc_speed();
@@ -318,7 +327,10 @@
err = read_eraseblock_by_page(i);
if (err)
goto out;
- cond_resched();
+
+ err = mtdtest_relax();
+ if (err)
+ goto out;
}
stop_timing();
speed = calc_speed();
@@ -337,7 +349,10 @@
err = write_eraseblock_by_2pages(i);
if (err)
goto out;
- cond_resched();
+
+ err = mtdtest_relax();
+ if (err)
+ goto out;
}
stop_timing();
speed = calc_speed();
@@ -352,7 +367,10 @@
err = read_eraseblock_by_2pages(i);
if (err)
goto out;
- cond_resched();
+
+ err = mtdtest_relax();
+ if (err)
+ goto out;
}
stop_timing();
speed = calc_speed();
@@ -385,7 +403,11 @@
err = multiblock_erase(i, j);
if (err)
goto out;
- cond_resched();
+
+ err = mtdtest_relax();
+ if (err)
+ goto out;
+
i += j;
}
stop_timing();
diff --git a/drivers/mtd/tests/stresstest.c b/drivers/mtd/tests/stresstest.c
index c9d42cc..e509f8a 100644
--- a/drivers/mtd/tests/stresstest.c
+++ b/drivers/mtd/tests/stresstest.c
@@ -96,7 +96,7 @@
if (offs + len > mtd->erasesize)
len = mtd->erasesize - offs;
}
- addr = eb * mtd->erasesize + offs;
+ addr = (loff_t)eb * mtd->erasesize + offs;
return mtdtest_read(mtd, addr, len, readbuf);
}
@@ -124,7 +124,7 @@
offsets[eb + 1] = 0;
}
}
- addr = eb * mtd->erasesize + offs;
+ addr = (loff_t)eb * mtd->erasesize + offs;
err = mtdtest_write(mtd, addr, len, writebuf);
if (unlikely(err))
return err;
@@ -221,7 +221,10 @@
err = do_operation();
if (err)
goto out;
- cond_resched();
+
+ err = mtdtest_relax();
+ if (err)
+ goto out;
}
pr_info("finished, %d operations done\n", op);
diff --git a/drivers/mtd/tests/subpagetest.c b/drivers/mtd/tests/subpagetest.c
index 7b59ef5..aecc6ce 100644
--- a/drivers/mtd/tests/subpagetest.c
+++ b/drivers/mtd/tests/subpagetest.c
@@ -95,7 +95,7 @@
loff_t addr = (loff_t)ebnum * mtd->erasesize;
for (k = 1; k < 33; ++k) {
- if (addr + (subpgsize * k) > (ebnum + 1) * mtd->erasesize)
+ if (addr + (subpgsize * k) > (loff_t)(ebnum + 1) * mtd->erasesize)
break;
prandom_bytes_state(&rnd_state, writebuf, subpgsize * k);
err = mtd_write(mtd, addr, subpgsize * k, &written, writebuf);
@@ -195,7 +195,7 @@
loff_t addr = (loff_t)ebnum * mtd->erasesize;
for (k = 1; k < 33; ++k) {
- if (addr + (subpgsize * k) > (ebnum + 1) * mtd->erasesize)
+ if (addr + (subpgsize * k) > (loff_t)(ebnum + 1) * mtd->erasesize)
break;
prandom_bytes_state(&rnd_state, writebuf, subpgsize * k);
clear_data(readbuf, subpgsize * k);
@@ -269,7 +269,10 @@
return err;
if (i % 256 == 0)
pr_info("verified up to eraseblock %u\n", i);
- cond_resched();
+
+ err = mtdtest_relax();
+ if (err)
+ return err;
}
pr_info("verified %u eraseblocks\n", i);
return 0;
@@ -346,7 +349,10 @@
goto out;
if (i % 256 == 0)
pr_info("written up to eraseblock %u\n", i);
- cond_resched();
+
+ err = mtdtest_relax();
+ if (err)
+ goto out;
}
pr_info("written %u eraseblocks\n", i);
@@ -360,7 +366,10 @@
goto out;
if (i % 256 == 0)
pr_info("verified up to eraseblock %u\n", i);
- cond_resched();
+
+ err = mtdtest_relax();
+ if (err)
+ goto out;
}
pr_info("verified %u eraseblocks\n", i);
@@ -383,7 +392,10 @@
goto out;
if (i % 256 == 0)
pr_info("written up to eraseblock %u\n", i);
- cond_resched();
+
+ err = mtdtest_relax();
+ if (err)
+ goto out;
}
pr_info("written %u eraseblocks\n", i);
@@ -398,7 +410,10 @@
goto out;
if (i % 256 == 0)
pr_info("verified up to eraseblock %u\n", i);
- cond_resched();
+
+ err = mtdtest_relax();
+ if (err)
+ goto out;
}
pr_info("verified %u eraseblocks\n", i);
diff --git a/drivers/mtd/tests/torturetest.c b/drivers/mtd/tests/torturetest.c
index b55bc52..e5d6e6d 100644
--- a/drivers/mtd/tests/torturetest.c
+++ b/drivers/mtd/tests/torturetest.c
@@ -101,11 +101,11 @@
{
int err, retries = 0;
size_t read;
- loff_t addr = ebnum * mtd->erasesize;
+ loff_t addr = (loff_t)ebnum * mtd->erasesize;
size_t len = mtd->erasesize;
if (pgcnt) {
- addr = (ebnum + 1) * mtd->erasesize - pgcnt * pgsize;
+ addr = (loff_t)(ebnum + 1) * mtd->erasesize - pgcnt * pgsize;
len = pgcnt * pgsize;
}
@@ -155,11 +155,11 @@
{
int err;
size_t written;
- loff_t addr = ebnum * mtd->erasesize;
+ loff_t addr = (loff_t)ebnum * mtd->erasesize;
size_t len = mtd->erasesize;
if (pgcnt) {
- addr = (ebnum + 1) * mtd->erasesize - pgcnt * pgsize;
+ addr = (loff_t)(ebnum + 1) * mtd->erasesize - pgcnt * pgsize;
len = pgcnt * pgsize;
}
err = mtd_write(mtd, addr, len, &written, buf);
@@ -279,7 +279,10 @@
" for 0xFF... pattern\n");
goto out;
}
- cond_resched();
+
+ err = mtdtest_relax();
+ if (err)
+ goto out;
}
}
@@ -294,7 +297,10 @@
err = write_pattern(i, patt);
if (err)
goto out;
- cond_resched();
+
+ err = mtdtest_relax();
+ if (err)
+ goto out;
}
/* Verify what we wrote */
@@ -314,7 +320,10 @@
"0x55AA55..." : "0xAA55AA...");
goto out;
}
- cond_resched();
+
+ err = mtdtest_relax();
+ if (err)
+ goto out;
}
}
diff --git a/fs/jffs2/xattr.c b/fs/jffs2/xattr.c
index 762c7a3..2eac553 100644
--- a/fs/jffs2/xattr.c
+++ b/fs/jffs2/xattr.c
@@ -1266,7 +1266,6 @@
if (rc) {
JFFS2_WARNING("%s: jffs2_reserve_space_gc() = %d, request = %u\n",
__func__, rc, totlen);
- rc = rc ? rc : -EBADFD;
goto out;
}
rc = save_xattr_ref(c, ref);
diff --git a/include/linux/mtd/map.h b/include/linux/mtd/map.h
index 5f487d7..29975c7 100644
--- a/include/linux/mtd/map.h
+++ b/include/linux/mtd/map.h
@@ -77,7 +77,7 @@
/* ensure we never evaluate anything shorted than an unsigned long
* to zero, and ensure we'll never miss the end of an comparison (bjd) */
-#define map_calc_words(map) ((map_bankwidth(map) + (sizeof(unsigned long)-1))/ sizeof(unsigned long))
+#define map_calc_words(map) ((map_bankwidth(map) + (sizeof(unsigned long)-1)) / sizeof(unsigned long))
#ifdef CONFIG_MTD_MAP_BANK_WIDTH_8
# ifdef map_bankwidth
@@ -181,7 +181,7 @@
}
}
-#define MAX_MAP_LONGS ( ((MAX_MAP_BANKWIDTH*8) + BITS_PER_LONG - 1) / BITS_PER_LONG )
+#define MAX_MAP_LONGS (((MAX_MAP_BANKWIDTH * 8) + BITS_PER_LONG - 1) / BITS_PER_LONG)
typedef union {
unsigned long x[MAX_MAP_LONGS];
@@ -264,20 +264,22 @@
struct mtd_info *do_map_probe(const char *name, struct map_info *map);
void map_destroy(struct mtd_info *mtd);
-#define ENABLE_VPP(map) do { if(map->set_vpp) map->set_vpp(map, 1); } while(0)
-#define DISABLE_VPP(map) do { if(map->set_vpp) map->set_vpp(map, 0); } while(0)
+#define ENABLE_VPP(map) do { if (map->set_vpp) map->set_vpp(map, 1); } while (0)
+#define DISABLE_VPP(map) do { if (map->set_vpp) map->set_vpp(map, 0); } while (0)
#define INVALIDATE_CACHED_RANGE(map, from, size) \
- do { if(map->inval_cache) map->inval_cache(map, from, size); } while(0)
+ do { if (map->inval_cache) map->inval_cache(map, from, size); } while (0)
static inline int map_word_equal(struct map_info *map, map_word val1, map_word val2)
{
int i;
- for (i=0; i<map_words(map); i++) {
+
+ for (i = 0; i < map_words(map); i++) {
if (val1.x[i] != val2.x[i])
return 0;
}
+
return 1;
}
@@ -286,9 +288,9 @@
map_word r;
int i;
- for (i=0; i<map_words(map); i++) {
+ for (i = 0; i < map_words(map); i++)
r.x[i] = val1.x[i] & val2.x[i];
- }
+
return r;
}
@@ -297,9 +299,9 @@
map_word r;
int i;
- for (i=0; i<map_words(map); i++) {
+ for (i = 0; i < map_words(map); i++)
r.x[i] = val1.x[i] & ~val2.x[i];
- }
+
return r;
}
@@ -308,22 +310,33 @@
map_word r;
int i;
- for (i=0; i<map_words(map); i++) {
+ for (i = 0; i < map_words(map); i++)
r.x[i] = val1.x[i] | val2.x[i];
- }
+
return r;
}
-#define map_word_andequal(m, a, b, z) map_word_equal(m, z, map_word_and(m, a, b))
+static inline int map_word_andequal(struct map_info *map, map_word val1, map_word val2, map_word val3)
+{
+ int i;
+
+ for (i = 0; i < map_words(map); i++) {
+ if ((val1.x[i] & val2.x[i]) != val3.x[i])
+ return 0;
+ }
+
+ return 1;
+}
static inline int map_word_bitsset(struct map_info *map, map_word val1, map_word val2)
{
int i;
- for (i=0; i<map_words(map); i++) {
+ for (i = 0; i < map_words(map); i++) {
if (val1.x[i] & val2.x[i])
return 1;
}
+
return 0;
}
@@ -355,14 +368,16 @@
if (map_bankwidth_is_large(map)) {
char *dest = (char *)&orig;
+
memcpy(dest+start, buf, len);
} else {
- for (i=start; i < start+len; i++) {
+ for (i = start; i < start+len; i++) {
int bitpos;
+
#ifdef __LITTLE_ENDIAN
- bitpos = i*8;
+ bitpos = i * 8;
#else /* __BIG_ENDIAN */
- bitpos = (map_bankwidth(map)-1-i)*8;
+ bitpos = (map_bankwidth(map) - 1 - i) * 8;
#endif
orig.x[0] &= ~(0xff << bitpos);
orig.x[0] |= (unsigned long)buf[i-start] << bitpos;
@@ -384,9 +399,10 @@
if (map_bankwidth(map) < MAP_FF_LIMIT) {
int bw = 8 * map_bankwidth(map);
+
r.x[0] = (1UL << bw) - 1;
} else {
- for (i=0; i<map_words(map); i++)
+ for (i = 0; i < map_words(map); i++)
r.x[i] = ~0UL;
}
return r;
@@ -407,7 +423,7 @@
r.x[0] = __raw_readq(map->virt + ofs);
#endif
else if (map_bankwidth_is_large(map))
- memcpy_fromio(r.x, map->virt+ofs, map->bankwidth);
+ memcpy_fromio(r.x, map->virt + ofs, map->bankwidth);
else
BUG();
diff --git a/include/linux/mtd/spi-nor.h b/include/linux/mtd/spi-nor.h
index 4720b86..e540952 100644
--- a/include/linux/mtd/spi-nor.h
+++ b/include/linux/mtd/spi-nor.h
@@ -155,6 +155,8 @@
* @write: [DRIVER-SPECIFIC] write data to the SPI NOR
* @erase: [DRIVER-SPECIFIC] erase a sector of the SPI NOR
* at the offset @offs
+ * @lock: [FLASH-SPECIFIC] lock a region of the SPI NOR
+ * @unlock: [FLASH-SPECIFIC] unlock a region of the SPI NOR
* @priv: the private data
*/
struct spi_nor {
@@ -189,6 +191,9 @@
size_t len, size_t *retlen, const u_char *write_buf);
int (*erase)(struct spi_nor *nor, loff_t offs);
+ int (*flash_lock)(struct spi_nor *nor, loff_t ofs, uint64_t len);
+ int (*flash_unlock)(struct spi_nor *nor, loff_t ofs, uint64_t len);
+
void *priv;
};
