Commit 7c83e28f authored by Daniel Golle's avatar Daniel Golle Committed by David S. Miller
Browse files

net: ethernet: mtk_eth_soc: fix NULL pointer dereference 



Check for NULL pointer to avoid kernel crashing in case of missing WO
firmware in case only a single WEDv2 device has been initialized, e.g. on
MT7981 which can connect just one wireless frontend.

Fixes: 86ce0d09 ("net: ethernet: mtk_eth_soc: use WO firmware for MT7981")
Signed-off-by: default avatarDaniel Golle <daniel@makrotopia.org>
Reviewed-by: default avatarSimon Horman <simon.horman@corigine.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 582dbb2c

drivers/net/ethernet/mediatek/mtk_wed.c

+1 −1
Original line number Diff line number Diff line
@@ -654,7 +654,7 @@ __mtk_wed_detach(struct mtk_wed_device *dev) 
					   BIT(hw->index), BIT(hw->index));

	}



	if (!hw_list[!hw->index]->wed_dev &&

	if ((!hw_list[!hw->index] || !hw_list[!hw->index]->wed_dev) &&

	    hw->eth->dma_dev != hw->eth->dev)

		mtk_eth_set_dma_device(hw->eth, hw->eth->dev);