linux-kernel - Re: [PATCH] drm/radeon: add header comment for clarification to vce_v2_0_enable

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Date:   Thu, 29 Jun 2017 15:25:19 -0400
From:   Alex Deucher <alexdeucher@...il.com>
To:     "Gustavo A. R. Silva" <garsilva@...eddedor.com>
Cc:     Alex Deucher <alexander.deucher@....com>,
        Christian König <christian.koenig@....com>,
        David Airlie <airlied@...ux.ie>,
        amd-gfx list <amd-gfx@...ts.freedesktop.org>,
        Maling list - DRI developers 
        <dri-devel@...ts.freedesktop.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] drm/radeon: add header comment for clarification to vce_v2_0_enable_mgcg()

On Thu, Jun 29, 2017 at 1:38 PM, Gustavo A. R. Silva
<garsilva@...eddedor.com> wrote:
> Add function header comment to make it clear that local variable sw_cg
> is used for debugging and it should not be removed.
>
> Addresses-Coverity-ID: 1198635
> Cc: Alex Deucher <alexdeucher@...il.com>
> Signed-off-by: Gustavo A. R. Silva <garsilva@...eddedor.com>

Applied.  thanks!

Alex

> ---
>  drivers/gpu/drm/radeon/vce_v2_0.c | 4 ++++
>  1 file changed, 4 insertions(+)
>
> diff --git a/drivers/gpu/drm/radeon/vce_v2_0.c b/drivers/gpu/drm/radeon/vce_v2_0.c
> index fce2144..b0a43b6 100644
> --- a/drivers/gpu/drm/radeon/vce_v2_0.c
> +++ b/drivers/gpu/drm/radeon/vce_v2_0.c
> @@ -104,6 +104,10 @@ static void vce_v2_0_disable_cg(struct radeon_device *rdev)
>         WREG32(VCE_CGTT_CLK_OVERRIDE, 7);
>  }
>
> +/*
> + * Local variable sw_cg is used for debugging purposes, in case we
> + * ran into problems with dynamic clock gating. Don't remove it.
> + */
>  void vce_v2_0_enable_mgcg(struct radeon_device *rdev, bool enable)
>  {
>         bool sw_cg = false;
> --
> 2.5.0
>