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Commit ea48b2b8 authored by Florian Fainelli's avatar Florian Fainelli Committed by David S. Miller
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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: default avatarFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent ab6016e0

drivers/net/phy/mdio-bitbang.c

+5 −2
Original line number Diff line number Diff line
@@ -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.

		 */