[PATCH v3 net-next 2/2] net: ethernet: mtk_wed: fix possible deadlock if mtk_wed_wo_init fails

[Leon Romanovsky]

On Wed, Dec 07, 2022 at 03:04:55PM +0100, Lorenzo Bianconi wrote:
> Introduce __mtk_wed_detach() in order to avoid a deadlock in
> mtk_wed_attach routine if mtk_wed_wo_init fails since both
> mtk_wed_attach and mtk_wed_detach run holding hw_lock mutex.
> 
> Fixes: 4c5de09eb0d0 ("net: ethernet: mtk_wed: add configure wed wo support")
> Signed-off-by: Lorenzo Bianconi <lorenzo at kernel.org>
> ---
>  drivers/net/ethernet/mediatek/mtk_wed.c | 17 ++++++++++++-----
>  1 file changed, 12 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/net/ethernet/mediatek/mtk_wed.c b/drivers/net/ethernet/mediatek/mtk_wed.c
> index 4ef23eadd69e..a6271449617f 100644
> --- a/drivers/net/ethernet/mediatek/mtk_wed.c
> +++ b/drivers/net/ethernet/mediatek/mtk_wed.c
> @@ -577,12 +577,10 @@ mtk_wed_deinit(struct mtk_wed_device *dev)
>  }
>  

Thanks,
Reviewed-by: Leon Romanovsky <leonro at nvidia.com>