Re: [PATCH] stmmac: Fix phy without MDIO subnode

From: Giuseppe CAVALLARO
Date: Thu Mar 24 2016 - 08:56:33 EST

Hi John

This should be fixed by some work done some days
ago and not yet committed.

Pls see "stmmac: MDIO fixes" patch-set and let me know
if ok on your side.


On 3/24/2016 11:56 AM, John Keeping wrote:
Since commit 88f8b1bb41c6 ("stmmac: Fix 'eth0: No PHY found'
regression") we no longer allocate mdio_bus_data unless there is a MDIO
subnode. This breaks the ethernet on the Radxa Rock2 (using
rk3288-rock2-square.dts) which does not have an MDIO subnode.

That commit was correct that the phy_bus_name test is unhelpful since we
allocate "plat" in the same function and never set phy_bus_name so let's
just drop the test which restores the previous behaviour.

Fixes: 88f8b1bb41c6 ("stmmac: Fix 'eth0: No PHY found' regression")
Signed-off-by: John Keeping <john@xxxxxxxxxxxx>
drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
index dcbd2a1..e0fa060 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
@@ -189,7 +189,7 @@ stmmac_probe_config_dt(struct platform_device *pdev, const char **mac)
if (of_property_read_u32(np, "snps,phy-addr", &plat->phy_addr) == 0)
dev_warn(&pdev->dev, "snps,phy-addr property is deprecated\n");

- if ((plat->phy_node && !of_phy_is_fixed_link(np)) || !plat->mdio_node)
+ if ((plat->phy_node && !of_phy_is_fixed_link(np)))
plat->mdio_bus_data = NULL;
plat->mdio_bus_data =