[PATCH v4] drm: Fix downstream dev count read

[Rodrigo Vivi]

On Wed, Apr 04, 2018 at 11:57:42PM +0530, Ramalingam C wrote:
> In both HDMI and DP, device count is represented by 6:0 bits of a
> register(BInfo/Bstatus)
> 
> So macro for bitmasking the device_count is fixed(0x3F->0x7F).
> 
> v3:
>   Retained the Rb-ed.
> v4:
>   %s/drm\/i915/drm [rodrigo]
> 

Shouldn't this patch have a "Fixes:" ?
cc: stable?

I pushed first 3 patches on the series to dinq.
I believe this one here could be there with Dave's ack or
maybe on drm-misc-fixes?

> Signed-off-by: Ramalingam C <ramalingam.c at intel.com>
> cc: Sean Paul <seanpaul at chromium.org>
> Reviewed-by: Sean Paul <seanpaul at chromium.org>
> ---
>  include/drm/drm_hdcp.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/include/drm/drm_hdcp.h b/include/drm/drm_hdcp.h
> index 562fa7df2637..98e63d870139 100644
> --- a/include/drm/drm_hdcp.h
> +++ b/include/drm/drm_hdcp.h
> @@ -19,7 +19,7 @@
>  #define DRM_HDCP_RI_LEN				2
>  #define DRM_HDCP_V_PRIME_PART_LEN		4
>  #define DRM_HDCP_V_PRIME_NUM_PARTS		5
> -#define DRM_HDCP_NUM_DOWNSTREAM(x)		(x & 0x3f)
> +#define DRM_HDCP_NUM_DOWNSTREAM(x)		(x & 0x7f)
>  #define DRM_HDCP_MAX_CASCADE_EXCEEDED(x)	(x & BIT(3))
>  #define DRM_HDCP_MAX_DEVICE_EXCEEDED(x)		(x & BIT(7))
>  
> -- 
> 2.7.4
>