[PATCH v4 10/11] drm/bridge: it6505: fix HDCP CTS ksv wait timer

[Dmitry Baryshkov]

On Thu, Sep 26, 2024 at 03:51:33PM GMT, Hermes Wu wrote:
> From: Hermes Wu <Hermes.wu at ite.com.tw>
> 
> When running the HDCP CTS test on UNIGRAF DPR-100.
> HDCP must disabled after waiting KSV for 5s.
> Consider system ksv work schedules. The original timer has a chance to expire.

I can't understand two last sentences, excuse me.

Nit: KSV, not ksv

> 
> Fixes: b5c84a9edcd4 ("drm/bridge: add it6505 driver")
> Signed-off-by: Hermes Wu <Hermes.wu at ite.com.tw>
> ---
>  drivers/gpu/drm/bridge/ite-it6505.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/bridge/ite-it6505.c b/drivers/gpu/drm/bridge/ite-it6505.c
> index e75bc1575aa8..22d9bec3faea 100644
> --- a/drivers/gpu/drm/bridge/ite-it6505.c
> +++ b/drivers/gpu/drm/bridge/ite-it6505.c
> @@ -2093,7 +2093,8 @@ static void it6505_hdcp_wait_ksv_list(struct work_struct *work)
>  	struct it6505 *it6505 = container_of(work, struct it6505,
>  					     hdcp_wait_ksv_list);
>  	struct device *dev = it6505->dev;
> -	unsigned int timeout = 5000;
> +	/* 1B-04 fail, wait to long to Stop encription(5s->3s). */

encryption, most likely it's also "too long".

> +	unsigned int timeout = 3000;

What is the timeout per the standard?

>  	u8 bstatus = 0;
>  	bool ksv_list_check;
>  
> -- 
> 2.34.1
> 

-- 
With best wishes
Dmitry