On Mon, Oct 29, 2018 at 03:15:48PM +0530, Ramalingam C wrote:
> To avoid the execution of link integrity check when the HDCP is
> already disabled, cancel the delayed work for link integrity check
> before disabling the HDCP.
>
> Signed-off-by: Ramalingam C <ramalingam.c@xxxxxxxxx>
This is racy. As an exercise, please lay out the scenario of what exactly
happens where. I'll drop this patch from the series.
-Daniel
> ---
> drivers/gpu/drm/i915/intel_hdcp.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_hdcp.c b/drivers/gpu/drm/i915/intel_hdcp.c
> index 1bf487f94254..d13e4af9ac05 100644
> --- a/drivers/gpu/drm/i915/intel_hdcp.c
> +++ b/drivers/gpu/drm/i915/intel_hdcp.c
> @@ -821,6 +821,7 @@ int intel_hdcp_disable(struct intel_connector *connector)
> if (!hdcp->shim)
> return -ENOENT;
>
> + cancel_delayed_work_sync(&hdcp->check_work);
> mutex_lock(&hdcp->mutex);
>
> if (hdcp->value != DRM_MODE_CONTENT_PROTECTION_UNDESIRED) {
> @@ -829,7 +830,6 @@ int intel_hdcp_disable(struct intel_connector *connector)
> }
>
> mutex_unlock(&hdcp->mutex);
> - cancel_delayed_work_sync(&hdcp->check_work);
> return ret;
> }
>
> --
> 2.7.4
>
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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