[RESEND PATCH] drm/dp: Increase link status size

Lyude Paul lyude at redhat.com
Thu Oct 31 20:41:01 UTC 2019


Whoops, replied to the wrong one
Reviewed-by: Lyude Paul <lyude at redhat.com>

On Tue, 2019-10-29 at 15:03 +0100, Thierry Reding wrote:
> From: Thierry Reding <treding at nvidia.com>
> 
> The current link status contains bytes 0x202 through 0x207, but we also
> want to make sure to include the DP_ADJUST_REQUEST_POST_CURSOR2 (0x20c)
> so that the post-cursor adjustment can be queried during link training.
> 
> Reported-by: coverity-bot <keescook+coverity-bot at chromium.org>
> Addresses-Coverity-ID: 1487366 ("Memory - corruptions")
> Fixes: 79465e0ffeb9 ("drm/dp: Add helper to get post-cursor adjustments")
> Signed-off-by: Thierry Reding <treding at nvidia.com>
> ---
>  include/drm/drm_dp_helper.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h
> index 51ecb5112ef8..9581dec900ba 100644
> --- a/include/drm/drm_dp_helper.h
> +++ b/include/drm/drm_dp_helper.h
> @@ -1121,7 +1121,7 @@
>  #define DP_MST_PHYSICAL_PORT_0 0
>  #define DP_MST_LOGICAL_PORT_0 8
>  
> -#define DP_LINK_STATUS_SIZE	   6
> +#define DP_LINK_STATUS_SIZE	   11
>  bool drm_dp_channel_eq_ok(const u8 link_status[DP_LINK_STATUS_SIZE],
>  			  int lane_count);
>  bool drm_dp_clock_recovery_ok(const u8 link_status[DP_LINK_STATUS_SIZE],
-- 
Cheers,
	Lyude Paul



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