commit 80928805babfd97b6f1721dd942a55dd2e7813ea
author Steve Glendinning <steve.glendinning@shawell.net> Tue Nov 06 00:08:53 2012 +0000
committer David S. Miller <davem@davemloft.net> Tue Nov 13 14:25:50 2012 -0500
tree 59874901a3b7358aecba22c88a0fe759a10d42ef
parent 0c9f79be295c99ac7e4b569ca493d75fdcc19e4e

smsc95xx: set MII_BUSY bit to read/write PHY regs

The device datasheet specifies the BUSY bit must be set when reading
or writing phy registers.  This patch ensures we do that.

Signed-off-by: Steve Glendinning <steve.glendinning@shawell.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/usb/smsc95xx.c

diff --git a/drivers/net/usb/smsc95xx.c b/drivers/net/usb/smsc95xx.c
index 3286166..362cb8c 100644
--- a/drivers/net/usb/smsc95xx.c
+++ b/drivers/net/usb/smsc95xx.c
@@ -184,7 +184,7 @@
 	/* set the address, index & direction (read from PHY) */
 	phy_id &= dev->mii.phy_id_mask;
 	idx &= dev->mii.reg_num_mask;
-	addr = (phy_id << 11) | (idx << 6) | MII_READ_;
+	addr = (phy_id << 11) | (idx << 6) | MII_READ_ | MII_BUSY_;
 	ret = smsc95xx_write_reg(dev, MII_ADDR, addr);
 	check_warn_goto_done(ret, "Error writing MII_ADDR");
 
@@ -221,7 +221,7 @@
 	/* set the address, index & direction (write to PHY) */
 	phy_id &= dev->mii.phy_id_mask;
 	idx &= dev->mii.reg_num_mask;
-	addr = (phy_id << 11) | (idx << 6) | MII_WRITE_;
+	addr = (phy_id << 11) | (idx << 6) | MII_WRITE_ | MII_BUSY_;
 	ret = smsc95xx_write_reg(dev, MII_ADDR, addr);
 	check_warn_goto_done(ret, "Error writing MII_ADDR");