@@ -321,16 +321,21 @@ static int ctb_write(struct intel_guc_ct_buffer *ctb,
return 0;
}
-/* Wait for the response from the GuC.
+/**
+ * Wait for the descriptor update.
+ * @desc: buffer descriptor
* @fence: response fence
* @status: placeholder for status
- * return: 0 response received (status is valid)
- * -ETIMEDOUT no response within hardcoded timeout
- * -EPROTO no response, ct buffer was in error
+ *
+ * Guc will update this descriptor with new fence and status.
+ * Returns:
+ * 0 response received (status is valid)
+ * -ETIMEDOUT no response within hardcoded timeout
+ * -EPROTO no response, ct buffer is in error
*/
-static int wait_for_response(struct guc_ct_buffer_desc *desc,
- u32 fence,
- u32 *status)
+static int wait_for_desc_update(struct guc_ct_buffer_desc *desc,
+ u32 fence,
+ u32 *status)
{
int err;
@@ -384,7 +389,7 @@ static int ctch_send(struct intel_guc *guc,
intel_guc_notify(guc);
- err = wait_for_response(desc, fence, status);
+ err = wait_for_desc_update(desc, fence, status);
if (unlikely(err))
return err;
if (INTEL_GUC_RECV_TO_STATUS(*status) != INTEL_GUC_STATUS_SUCCESS)
In next patch we will introduce another way of waiting for the response that will use RECV buffer. To avoid misleading names, rename old wait function to reflect the fact that it is based on descriptor update. v2: fix comment style (Michal) Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com> --- drivers/gpu/drm/i915/intel_guc_ct.c | 21 +++++++++++++-------- 1 file changed, 13 insertions(+), 8 deletions(-)