[PATCH] USB Storage: sddr09 cleanups
This is the second of three patches to prepare the sddr09 subdriver for
conversion to the Sim-SCSI framework. This patch (as595) updates the
code to use standard error values for return codes instead of our
special-purpose USB_STOR_TRANSPORT_... codes. The reverse update is
then needed in the transport routine, but with the Sim-SCSI framework
that routine will go away.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Andries Brouwer <Andries.Brouwer@cwi.nl>
Signed-off-by: Matthew Dharm <mdharm-usb@one-eyed-alien.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/usb/storage/sddr09.c b/drivers/usb/storage/sddr09.c
index 6c379b6..760fe93 100644
--- a/drivers/usb/storage/sddr09.c
+++ b/drivers/usb/storage/sddr09.c
@@ -274,8 +274,11 @@
rc = usb_stor_ctrl_transfer(us, pipe, request, requesttype,
0, 0, xfer_data, xfer_len);
- return (rc == USB_STOR_XFER_GOOD ? USB_STOR_TRANSPORT_GOOD :
- USB_STOR_TRANSPORT_ERROR);
+ switch (rc) {
+ case USB_STOR_XFER_GOOD: return 0;
+ case USB_STOR_XFER_STALLED: return -EPIPE;
+ default: return -EIO;
+ }
}
static int
@@ -322,20 +325,12 @@
command[4] = buflen;
result = sddr09_send_scsi_command(us, command, 12);
- if (result != USB_STOR_TRANSPORT_GOOD) {
- US_DEBUGP("request sense failed\n");
+ if (result)
return result;
- }
result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe,
sensebuf, buflen, NULL);
- if (result != USB_STOR_XFER_GOOD) {
- US_DEBUGP("request sense bulk in failed\n");
- return USB_STOR_TRANSPORT_ERROR;
- } else {
- US_DEBUGP("request sense worked\n");
- return USB_STOR_TRANSPORT_GOOD;
- }
+ return (result == USB_STOR_XFER_GOOD ? 0 : -EIO);
}
/*
@@ -383,7 +378,7 @@
result = sddr09_send_scsi_command(us, command, 12);
- if (result != USB_STOR_TRANSPORT_GOOD) {
+ if (result) {
US_DEBUGP("Result for send_control in sddr09_read2%d %d\n",
x, result);
return result;
@@ -395,9 +390,9 @@
if (result != USB_STOR_XFER_GOOD) {
US_DEBUGP("Result for bulk_transfer in sddr09_read2%d %d\n",
x, result);
- return USB_STOR_TRANSPORT_ERROR;
+ return -EIO;
}
- return USB_STOR_TRANSPORT_GOOD;
+ return 0;
}
/*
@@ -511,7 +506,7 @@
result = sddr09_send_scsi_command(us, command, 12);
- if (result != USB_STOR_TRANSPORT_GOOD)
+ if (result)
US_DEBUGP("Result for send_control in sddr09_erase %d\n",
result);
@@ -569,7 +564,7 @@
result = sddr09_send_scsi_command(us, command, 12);
- if (result != USB_STOR_TRANSPORT_GOOD) {
+ if (result) {
US_DEBUGP("Result for send_control in sddr09_writeX %d\n",
result);
return result;
@@ -581,9 +576,9 @@
if (result != USB_STOR_XFER_GOOD) {
US_DEBUGP("Result for bulk_transfer in sddr09_writeX %d\n",
result);
- return USB_STOR_TRANSPORT_ERROR;
+ return -EIO;
}
- return USB_STOR_TRANSPORT_GOOD;
+ return 0;
}
/* erase address, write same address */
@@ -647,7 +642,7 @@
result = sddr09_send_scsi_command(us, command, 4*nsg+3);
- if (result != USB_STOR_TRANSPORT_GOOD) {
+ if (result) {
US_DEBUGP("Result for send_control in sddr09_read_sg %d\n",
result);
return result;
@@ -655,7 +650,7 @@
buf = (unsigned char *) kmalloc(bulklen, GFP_NOIO);
if (!buf)
- return USB_STOR_TRANSPORT_ERROR;
+ return -ENOMEM;
result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe,
buf, bulklen, NULL);
@@ -663,10 +658,10 @@
if (result != USB_STOR_XFER_GOOD) {
US_DEBUGP("Result for bulk_transfer in sddr09_read_sg %d\n",
result);
- return USB_STOR_TRANSPORT_ERROR;
+ return -EIO;
}
- return USB_STOR_TRANSPORT_GOOD;
+ return 0;
}
#endif
@@ -695,14 +690,13 @@
command[1] = LUNBITS;
result = sddr09_send_scsi_command(us, command, 12);
- if (result != USB_STOR_TRANSPORT_GOOD)
+ if (result)
return result;
result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe,
data, 64, NULL);
*status = data[0];
- return (result == USB_STOR_XFER_GOOD ?
- USB_STOR_TRANSPORT_GOOD : USB_STOR_TRANSPORT_ERROR);
+ return (result == USB_STOR_XFER_GOOD ? 0 : -EIO);
}
static int
@@ -725,7 +719,7 @@
buffer = kmalloc(len, GFP_NOIO);
if (buffer == NULL) {
printk("sddr09_read_data: Out of memory\n");
- return USB_STOR_TRANSPORT_ERROR;
+ return -ENOMEM;
}
// Figure out the initial LBA and page
@@ -736,7 +730,7 @@
// This could be made much more efficient by checking for
// contiguous LBA's. Another exercise left to the student.
- result = USB_STOR_TRANSPORT_GOOD;
+ result = 0;
index = offset = 0;
while (sectors > 0) {
@@ -749,7 +743,7 @@
if (lba >= maxlba) {
US_DEBUGP("Error: Requested lba %u exceeds "
"maximum %u\n", lba, maxlba);
- result = USB_STOR_TRANSPORT_ERROR;
+ result = -EIO;
break;
}
@@ -763,7 +757,7 @@
/* This is not really an error. It just means
that the block has never been written.
- Instead of returning USB_STOR_TRANSPORT_ERROR
+ Instead of returning an error
it is better to return all zero data. */
memset(buffer, 0, len);
@@ -778,7 +772,7 @@
result = sddr09_read20(us, address>>1,
pages, info->pageshift, buffer, 0);
- if (result != USB_STOR_TRANSPORT_GOOD)
+ if (result)
break;
}
@@ -844,7 +838,7 @@
pba = sddr09_find_unused_pba(info, lba);
if (!pba) {
printk("sddr09_write_lba: Out of unused blocks\n");
- return USB_STOR_TRANSPORT_ERROR;
+ return -ENOSPC;
}
info->pba_to_lba[pba] = lba;
info->lba_to_pba[lba] = pba;
@@ -855,7 +849,7 @@
/* Maybe it is impossible to write to PBA 1.
Fake success, but don't do anything. */
printk("sddr09: avoid writing to pba 1\n");
- return USB_STOR_TRANSPORT_GOOD;
+ return 0;
}
pagelen = (1 << info->pageshift) + (1 << CONTROL_SHIFT);
@@ -864,7 +858,7 @@
address = (pba << (info->pageshift + info->blockshift));
result = sddr09_read22(us, address>>1, info->blocksize,
info->pageshift, blockbuffer, 0);
- if (result != USB_STOR_TRANSPORT_GOOD)
+ if (result)
return result;
/* check old contents and fill lba */
@@ -911,7 +905,7 @@
{
unsigned char status = 0;
int result2 = sddr09_read_status(us, &status);
- if (result2 != USB_STOR_TRANSPORT_GOOD)
+ if (result2)
US_DEBUGP("sddr09_write_inplace: cannot read status\n");
else if (status != 0xc0)
US_DEBUGP("sddr09_write_inplace: status after write: 0x%x\n",
@@ -952,7 +946,7 @@
blockbuffer = kmalloc(blocklen, GFP_NOIO);
if (!blockbuffer) {
printk("sddr09_write_data: Out of memory\n");
- return USB_STOR_TRANSPORT_ERROR;
+ return -ENOMEM;
}
// Since we don't write the user data directly to the device,
@@ -964,14 +958,14 @@
if (buffer == NULL) {
printk("sddr09_write_data: Out of memory\n");
kfree(blockbuffer);
- return USB_STOR_TRANSPORT_ERROR;
+ return -ENOMEM;
}
// Figure out the initial LBA and page
lba = address >> info->blockshift;
page = (address & info->blockmask);
- result = USB_STOR_TRANSPORT_GOOD;
+ result = 0;
index = offset = 0;
while (sectors > 0) {
@@ -987,7 +981,7 @@
result = sddr09_write_lba(us, lba, page, pages,
buffer, blockbuffer);
- if (result != USB_STOR_TRANSPORT_GOOD)
+ if (result)
break;
page = 0;
@@ -1036,7 +1030,7 @@
command[1] = LUNBITS;
result = sddr09_send_scsi_command(us, command, 12);
- if (result != USB_STOR_TRANSPORT_GOOD)
+ if (result)
return result;
result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe,
@@ -1045,8 +1039,7 @@
for (i = 0; i < 4; i++)
deviceID[i] = content[i];
- return (result == USB_STOR_XFER_GOOD ?
- USB_STOR_TRANSPORT_GOOD : USB_STOR_TRANSPORT_ERROR);
+ return (result == USB_STOR_XFER_GOOD ? 0 : -EIO);
}
static int
@@ -1055,7 +1048,7 @@
unsigned char status;
result = sddr09_read_status(us, &status);
- if (result != USB_STOR_TRANSPORT_GOOD) {
+ if (result) {
US_DEBUGP("sddr09_get_wp: read_status fails\n");
return result;
}
@@ -1071,7 +1064,7 @@
if (status & 0x1)
US_DEBUGP(" Error");
US_DEBUGP("\n");
- return USB_STOR_TRANSPORT_GOOD;
+ return 0;
}
#if 0
@@ -1103,7 +1096,7 @@
result = sddr09_read_deviceID(us, deviceID);
- if (result != USB_STOR_TRANSPORT_GOOD) {
+ if (result) {
US_DEBUGP("Result of read_deviceID is %d\n", result);
printk("sddr09: could not read card info\n");
return NULL;
@@ -1214,7 +1207,7 @@
us, address>>1,
min(alloc_blocks, numblocks - i),
buffer, 0);
- if (result != USB_STOR_TRANSPORT_GOOD) {
+ if (result) {
result = -1;
goto done;
}
@@ -1402,7 +1395,7 @@
return result;
result = sddr09_send_command(us, 0x01, USB_DIR_IN, data, 2);
- if (result != USB_STOR_TRANSPORT_GOOD) {
+ if (result) {
US_DEBUGP("sddr09_init: send_command fails\n");
return result;
}
@@ -1411,7 +1404,7 @@
// get 07 02
result = sddr09_send_command(us, 0x08, USB_DIR_IN, data, 2);
- if (result != USB_STOR_TRANSPORT_GOOD) {
+ if (result) {
US_DEBUGP("sddr09_init: 2nd send_command fails\n");
return result;
}
@@ -1420,7 +1413,7 @@
// get 07 00
result = sddr09_request_sense(us, data, 18);
- if (result == USB_STOR_TRANSPORT_GOOD && data[2] != 0) {
+ if (result == 0 && data[2] != 0) {
int j;
for (j=0; j<18; j++)
printk(" %02X", data[j]);
@@ -1567,7 +1560,9 @@
US_DEBUGP("READ_10: read page %d pagect %d\n",
page, pages);
- return sddr09_read_data(us, page, pages);
+ result = sddr09_read_data(us, page, pages);
+ return (result == 0 ? USB_STOR_TRANSPORT_GOOD :
+ USB_STOR_TRANSPORT_ERROR);
}
if (srb->cmnd[0] == WRITE_10) {
@@ -1580,7 +1575,9 @@
US_DEBUGP("WRITE_10: write page %d pagect %d\n",
page, pages);
- return sddr09_write_data(us, page, pages);
+ result = sddr09_write_data(us, page, pages);
+ return (result == 0 ? USB_STOR_TRANSPORT_GOOD :
+ USB_STOR_TRANSPORT_ERROR);
}
/* catch-all for all other commands, except
@@ -1606,10 +1603,10 @@
US_DEBUGP("SDDR09: Send control for command %s\n", ptr);
result = sddr09_send_scsi_command(us, srb->cmnd, 12);
- if (result != USB_STOR_TRANSPORT_GOOD) {
+ if (result) {
US_DEBUGP("sddr09_transport: sddr09_send_scsi_command "
"returns %d\n", result);
- return result;
+ return USB_STOR_TRANSPORT_ERROR;
}
if (srb->request_bufflen == 0)
