[Intel-gfx] [PATCH v2 2/5] drm/hdcp: fix DRM_HDCP_2_KSV_COUNT_2_LSBITS

[Anshuman Gupta]

On 2020-02-12 at 15:59:39 +0530, Ramalingam C wrote:
> Need to extract the 2 most significant bits from a byte for constructing
> the revoked KSV count of the SRM.
> 
> Signed-off-by: Ramalingam C <ramalingam.c at intel.com>
> ---
>  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 d512089b873f..c6bab4986a65 100644
> --- a/include/drm/drm_hdcp.h
> +++ b/include/drm/drm_hdcp.h
> @@ -276,7 +276,7 @@ void drm_hdcp_cpu_to_be24(u8 seq_num[HDCP_2_2_SEQ_NUM_LEN], u32 val)
>  #define DRM_HDCP_2_VRL_LENGTH_SIZE		3
>  #define DRM_HDCP_2_DCP_SIG_SIZE			384
>  #define DRM_HDCP_2_NO_OF_DEV_PLUS_RESERVED_SZ	4
> -#define DRM_HDCP_2_KSV_COUNT_2_LSBITS(byte)	(((byte) & 0xC) >> 6)
> +#define DRM_HDCP_2_KSV_COUNT_2_LSBITS(byte)	(((byte) & 0xC0) >> 6)
LGTM, verified wrt Table 5.1 HDCP HDMI specs page 64.
Reviewed-by: Anshuman Gupta <anshuman.gupta at intel.com> 
>  
>  struct hdcp_srm_header {
>  	u8 srm_id;
> -- 
> 2.20.1
> 
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