On 3/25/2019 4:46 AM, Kangjie Lu wrote:
pm_runtime_get_sync could fail and thus deserves a check.

The patch adds such a check and return its error code upstream
if it indeed failed.

Signed-off-by: Kangjie Lu <k...@umn.edu>
Reviewed-by: Mukesh Ojha <mo...@codeaurora.org>

-Mukesh
---
  drivers/gpu/drm/v3d/v3d_drv.c | 2 ++
  1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/v3d/v3d_drv.c b/drivers/gpu/drm/v3d/v3d_drv.c
index f0afcec72c34..99daad11fac2 100644
--- a/drivers/gpu/drm/v3d/v3d_drv.c
+++ b/drivers/gpu/drm/v3d/v3d_drv.c
@@ -101,6 +101,8 @@ static int v3d_get_param_ioctl(struct drm_device *dev, void 
*data,
                        return -EINVAL;
ret = pm_runtime_get_sync(v3d->dev);
+               if (ret < 0)
+                       return ret;
                if (args->param >= DRM_V3D_PARAM_V3D_CORE0_IDENT0 &&
                    args->param <= DRM_V3D_PARAM_V3D_CORE0_IDENT2) {
                        args->value = V3D_CORE_READ(0, offset);
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