[Intel-gfx] [PATCH v2 4/4] drm/i915: Fix downstream dev count read

[Sean Paul]

On Thu, Mar 29, 2018 at 07:39:08PM +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).
> 


Reviewed-by: Sean Paul <seanpaul at chromium.org>

> Signed-off-by: Ramalingam C <ramalingam.c at intel.com>
> cc: 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
> 

-- 
Sean Paul, Software Engineer, Google / Chromium OS