On Thu, May 06, 2021 at 12:13:31PM -0700, Matthew Brost wrote:
> From: Michal Wajdeczko <michal.wajdeczko@xxxxxxxxx>
>
> We are no longer using descriptor to hold G2H replies and we are
> protecting access to the descriptor and command buffer by the
> separate spinlock, so we can stop using mutex.
>
> Signed-off-by: Michal Wajdeczko <michal.wajdeczko@xxxxxxxxx>
> Signed-off-by: Matthew Brost <matthew.brost@xxxxxxxxx>
Reviewed-by: Matthew Brost <matthew.brost@xxxxxxxxx>
> ---
> drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c | 4 ----
> 1 file changed, 4 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c
> index bee0958d8bae..cb58fa7f970c 100644
> --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c
> +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c
> @@ -537,7 +537,6 @@ static int ct_send(struct intel_guc_ct *ct,
> int intel_guc_ct_send(struct intel_guc_ct *ct, const u32 *action, u32 len,
> u32 *response_buf, u32 response_buf_size)
> {
> - struct intel_guc *guc = ct_to_guc(ct);
> u32 status = ~0; /* undefined */
> int ret;
>
> @@ -546,8 +545,6 @@ int intel_guc_ct_send(struct intel_guc_ct *ct, const u32 *action, u32 len,
> return -ENODEV;
> }
>
> - mutex_lock(&guc->send_mutex);
> -
> ret = ct_send(ct, action, len, response_buf, response_buf_size, &status);
> if (unlikely(ret < 0)) {
> CT_ERROR(ct, "Sending action %#x failed (err=%d status=%#X)\n",
> @@ -557,7 +554,6 @@ int intel_guc_ct_send(struct intel_guc_ct *ct, const u32 *action, u32 len,
> action[0], ret, ret);
> }
>
> - mutex_unlock(&guc->send_mutex);
> return ret;
> }
>
> --
> 2.28.0
>
