tree 66280f4e3b7f4c822499b7efc89eda73a949e235
parent 3de2a02b60a4ef0ab76263216f08c7d095fc7c42
author Dinh Nguyen <dinguyen@kernel.org> 1649337921 -0500
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1650438405 +0200

net: ethernet: stmmac: fix altr_tse_pcs function when using a fixed-link

[ Upstream commit a6aaa00324240967272b451bfa772547bd576ee6 ]

When using a fixed-link, the altr_tse_pcs driver crashes
due to null-pointer dereference as no phy_device is provided to
tse_pcs_fix_mac_speed function. Fix this by adding a check for
phy_dev before calling the tse_pcs_fix_mac_speed() function.

Also clean up the tse_pcs_fix_mac_speed function a bit. There is
no need to check for splitter_base and sgmii_adapter_base
because the driver will fail if these 2 variables are not
derived from the device tree.

Fixes: fb3bbdb85989 ("net: ethernet: Add TSE PCS support to dwmac-socfpga")
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>