[PATCH 099/103] drm/amd/display: Remove a false-positive error message

Harry Wentland harry.wentland at amd.com
Tue Oct 10 22:41:08 UTC 2017

From: Jerry Zuo <Jerry.Zuo at amd.com>

To avoid confusion, need to suppress the error message when get
-ERESTARTSYS error code. It is normal when getting interrupted
by signals in the process of a wait for the buffer to become
unreserved. Only propagate to user-mode for further action,
no need to pop up error message.

Signed-off-by: Jerry Zuo <Jerry.Zuo at amd.com>
Reviewed-by: Sun peng Li <Sunpeng.Li at amd.com>
Acked-by: Harry Wentland <Harry.Wentland at amd.com>
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index ff9a35ecf040..351e398cb445 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -1779,7 +1779,9 @@ static int get_fb_info(
 	int r = amdgpu_bo_reserve(rbo, false);
 	if (unlikely(r)) {
-		DRM_ERROR("Unable to reserve buffer\n");
+		// Don't show error msg. when return -ERESTARTSYS
+		if (r != -ERESTARTSYS)
+			DRM_ERROR("Unable to reserve buffer: %d\n", r);
 		return r;

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