On 2020-05-19 at 18:16:21 -0400, Sean Paul wrote:
> From: Sean Paul <[email protected]>
> 
> We're seeing some R0' mismatches in the field, particularly with
I think you want to say Vprime verification? delay is added in between
the retry for vprime verfication.

-Ram
> repeaters. I'm guessing the (already lenient) 300ms wait time isn't
> enough for some setups. So add an additional wait when R0' is
> mismatched.
> 
> Signed-off-by: Sean Paul <[email protected]>
> ---
>  drivers/gpu/drm/i915/display/intel_hdcp.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_hdcp.c 
> b/drivers/gpu/drm/i915/display/intel_hdcp.c
> index 2cbc4619b4ce..924a717a4fa4 100644
> --- a/drivers/gpu/drm/i915/display/intel_hdcp.c
> +++ b/drivers/gpu/drm/i915/display/intel_hdcp.c
> @@ -592,6 +592,9 @@ int intel_hdcp_auth_downstream(struct intel_connector 
> *connector)
>                                                 bstatus);
>               if (!ret)
>                       break;
> +
> +             /* Maybe the sink is lazy, give it some more time */
> +             usleep_range(10000, 50000);
>       }
>  
>       if (i == tries) {
> -- 
> Sean Paul, Software Engineer, Google / Chromium OS
> 
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