[[PATCH v2]drm/amdgpu/psp: ignore psp reponse status] drm/amdgpu/psp: ignore psp reponse status

[Aaron Liu]

In some cases, psp response status is not 0 even there is no
problem while the command is submitted. Some version of PSP FW
doesn't write 0 to that field.
So here we would like to only print a warning instead of an error
during psp initialization to avoid breaking hw_init and it doesn't
return -EINVAL.

Change-Id: I680679983f972b6969f4949f1faafaf17fe996a6
Signed-off-by: Aaron Liu <aaron.liu at amd.com>
Reviewed-by: Huang Rui <ray.huang at amd.com>
Reviewed-by: Xiangliang Yu<Xiangliang.Yu at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
index 53c2d60..f26d8fa 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
@@ -140,14 +140,19 @@ psp_cmd_submit_buf(struct psp_context *psp,
 	while (*((unsigned int *)psp->fence_buf) != index)
 		msleep(1);
 
-	/* the status field must be 0 after psp command completion */
+	/* In some cases, psp response status is not 0 even there is no
+	 * problem while the command is submitted. Some version of PSP FW
+	 * doesn't write 0 to that field.
+	 * So here we would like to only print a warning instead of an error
+	 * during psp initialization to avoid breaking hw_init and it doesn't
+	 * return -EINVAL.
+	 */
 	if (psp->cmd_buf_mem->resp.status) {
 		if (ucode)
-			DRM_ERROR("failed to load ucode id (%d) ",
+			DRM_WARN("failed to load ucode id (%d) ",
 				  ucode->ucode_id);
-		DRM_ERROR("psp command failed and response status is (%d)\n",
+		DRM_WARN("psp command failed and response status is (%d)\n",
 			  psp->cmd_buf_mem->resp.status);
-		return -EINVAL;
 	}
 
 	/* get xGMI session id from response buffer */
-- 
2.7.4