[Intel-gfx] [PATCH v5] drm: Fix HDCP downstream dev count read

[Sean Paul]

On Thu, Apr 5, 2018 at 8:09 AM Ramalingam C <ramalingam.c at intel.com> 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]
> v5:
>    Added "Fixes:" and HDCP keyword in subject [Rodrigo, Sean Paul]

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


Thank you for your patch, I've pushed it to -misc-fixes

Sean


> Fixes: 495eb7f877ab drm: Add some HDCP related #defines
> 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