[PATCH 2/2] smsc95xx: set MII_BUSY bit to read/write PHY regs
From: Steve Glendinning <steve.glendinning@shawell.net>
Date: 2012-11-06 10:08:57
Subsystem:
networking drivers, the rest, usb networking drivers, usb smsc95xx ethernet driver · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds, Steve Glendinning
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> --- drivers/net/usb/smsc95xx.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/usb/smsc95xx.c b/drivers/net/usb/smsc95xx.c
index 34f2e78..69efe66 100644
--- a/drivers/net/usb/smsc95xx.c
+++ b/drivers/net/usb/smsc95xx.c@@ -167,7 +167,7 @@ static int smsc95xx_mdio_read(struct net_device *netdev, int phy_id, int idx) /* 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");
@@ -204,7 +204,7 @@ static void smsc95xx_mdio_write(struct net_device *netdev, int phy_id, int idx, /* 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");
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1.7.10.4