p71924506
/
linux_old1
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

net: phy: mdio-gpio: Handle phy_ignore_ta_mask 

Update mdiobb_read() to read whether the PHY has a broken turn-around,
and if it does, ignore it to make the read succeeed.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Fainelli 2015-05-12 10:33:26 -07:00 committed by David S. Miller
parent ab6016e0c1
commit ea48b2b8ad
1 changed files with 5 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/net/phy/mdio-bitbang.c
View File

@ -165,8 +165,11 @@ static int mdiobb_read(struct mii_bus *bus, int phy, int reg)
ctrl->ops->set_mdio_dir(ctrl, 0);
/* check the turnaround bit: the PHY should be driving it to zero */
if (mdiobb_get_bit(ctrl) != 0) {
/* check the turnaround bit: the PHY should be driving it to zero, if this
* PHY is listed in phy_ignore_ta_mask as having broken TA, skip that
*/
if (mdiobb_get_bit(ctrl) != 0 &&
!(bus->phy_ignore_ta_mask & (1 << phy))) {
/* PHY didn't drive TA low -- flush any bits it
* may be trying to send.
*/