2021-01-18 20:56:05

by Niklas Söderlund

[permalink] [raw]
Subject: Re: [PATCH] sh_eth: Fix power down vs. is_opened flag ordering

Hi Geert,

Thanks for your work.

On 2021-01-18 16:08:12 +0100, Geert Uytterhoeven wrote:
> sh_eth_close() does a synchronous power down of the device before
> marking it closed. Revert the order, to make sure the device is never
> marked opened while suspended.
>
> While at it, use pm_runtime_put() instead of pm_runtime_put_sync(), as
> there is no reason to do a synchronous power down.
>
> Fixes: 7fa2955ff70ce453 ("sh_eth: Fix sleeping function called from invalid context")
> Signed-off-by: Geert Uytterhoeven <[email protected]>

Reviewed-by: Niklas S?derlund <[email protected]>

> ---
> drivers/net/ethernet/renesas/sh_eth.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c
> index 9b52d350e21a9f2b..590b088bc4c7f3e2 100644
> --- a/drivers/net/ethernet/renesas/sh_eth.c
> +++ b/drivers/net/ethernet/renesas/sh_eth.c
> @@ -2606,10 +2606,10 @@ static int sh_eth_close(struct net_device *ndev)
> /* Free all the skbuffs in the Rx queue and the DMA buffer. */
> sh_eth_ring_free(ndev);
>
> - pm_runtime_put_sync(&mdp->pdev->dev);
> -
> mdp->is_opened = 0;
>
> + pm_runtime_put(&mdp->pdev->dev);
> +
> return 0;
> }
>
> --
> 2.25.1
>

--
Regards,
Niklas S?derlund