drm/amdgpu: resolve failed error inject msg

invoking an error injection successfully will cause an at_event intterrupt that

will occur before the invoke sequence can complete causing an invalid error
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: John Clements <john.clements@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c

@@ -200,6 +200,7 @@ psp_cmd_submit_buf(struct psp_context *psp,
 	int ret;
 	int index;
 	int timeout = 2000;
+	bool ras_intr = false;
 
 	mutex_lock(&psp->mutex);
 
@@ -224,7 +225,8 @@ psp_cmd_submit_buf(struct psp_context *psp,
 		 * because gpu reset thread triggered and lock resource should
 		 * be released for psp resume sequence.
 		 */
-		if (amdgpu_ras_intr_triggered())
+		ras_intr = amdgpu_ras_intr_triggered();
+		if (ras_intr)
 			break;
 		msleep(1);
 		amdgpu_asic_invalidate_hdp(psp->adev, NULL);
@@ -237,7 +239,7 @@ psp_cmd_submit_buf(struct psp_context *psp,
 	 * during psp initialization to avoid breaking hw_init and it doesn't
 	 * return -EINVAL.
 	 */
-	if (psp->cmd_buf_mem->resp.status || !timeout) {
+	if ((psp->cmd_buf_mem->resp.status || !timeout) && !ras_intr) {
 		if (ucode)
 			DRM_WARN("failed to load ucode id (%d) ",
 				  ucode->ucode_id);

drivers/gpu/drm/amd/amdgpu/psp_v11_0.c

@@ -26,6 +26,7 @@
 
 #include "amdgpu.h"
 #include "amdgpu_psp.h"
+#include "amdgpu_ras.h"
 #include "amdgpu_ucode.h"
 #include "soc15_common.h"
 #include "psp_v11_0.h"
@@ -868,6 +869,11 @@ static int psp_v11_0_ras_trigger_error(struct psp_context *psp,
 	if (ret)
 		return -EINVAL;
 
+	/* If err_event_athub occurs error inject was successful, however
+	   return status from TA is no long reliable */
+	if (amdgpu_ras_intr_triggered())
+		return 0;
+
 	return ras_cmd->ras_status;
 }