net: ethernet: mtk_wed: fix some possible NULL pointer dereferences

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Fix possible NULL pointer dereference in mtk_wed_detach routine checking
wo pointer is properly allocated before running mtk_wed_wo_reset() and
mtk_wed_wo_deinit().
Even if it is just a theoretical issue at the moment check wo pointer is
not NULL in mtk_wed_mcu_msg_update.
Moreover, honor mtk_wed_mcu_send_msg return value in mtk_wed_wo_reset()

Fixes: 799684448e ("net: ethernet: mtk_wed: introduce wed wo support")
Fixes: 4c5de09eb0 ("net: ethernet: mtk_wed: add configure wed wo support")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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This commit is contained in:

Lorenzo Bianconi 2022-12-07 15:04:54 +01:00 • committed by Jakub Kicinski

parent 3df96774a4

commit c79e0af5ae

2 changed files with 11 additions and 5 deletions

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13

drivers/net/ethernet/mediatek/mtk_wed.c

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3

drivers/net/ethernet/mediatek/mtk_wed_mcu.c

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