linux-kernel - Re: [PATCH net 1/4] net: ipa: add a missing _

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Date:   Mon, 1 Feb 2021 16:09:03 -0800
From:   Amy Parker <enbyamy@...il.com>
To:     Alex Elder <elder@...aro.org>
Cc:     davem@...emloft.net, kuba@...nel.org, elder@...nel.org,
        evgreen@...omium.org, bjorn.andersson@...aro.org,
        cpratapa@...eaurora.org, subashab@...eaurora.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net 1/4] net: ipa: add a missing __iomem attribute

On Mon, Feb 1, 2021 at 3:29 PM Alex Elder <elder@...aro.org> wrote:
>
> The virt local variable in gsi_channel_state() does not have an
> __iomem attribute but should.  Fix this.
>
> Signed-off-by: Alex Elder <elder@...aro.org>
> ---
>  drivers/net/ipa/gsi.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/net/ipa/gsi.c b/drivers/net/ipa/gsi.c
> index 14d9a791924bf..e2e77f09077a9 100644
> --- a/drivers/net/ipa/gsi.c
> +++ b/drivers/net/ipa/gsi.c
> @@ -440,7 +440,7 @@ static void gsi_evt_ring_de_alloc_command(struct gsi *gsi, u32 evt_ring_id)
>  static enum gsi_channel_state gsi_channel_state(struct gsi_channel *channel)
>  {
>         u32 channel_id = gsi_channel_id(channel);
> -       void *virt = channel->gsi->virt;
> +       void __iomem *virt = channel->gsi->virt;
>         u32 val;
>
>         val = ioread32(virt + GSI_CH_C_CNTXT_0_OFFSET(channel_id));
> --
> 2.27.0
>

Seems pretty straightforward to me, ioread32 expects an
__iomem-annotated pointer.

Reviewed-by: Amy Parker <enbyamy@...il.com>