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drm/v3d: fix a missing check of pm_runtime_get_sync

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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 <kjlu@umn.edu>
Signed-off-by: Eric Anholt <eric@anholt.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20190324231602.2436-1-kjlu@umn.edu
Reviewed-by: Mukesh Ojha <mojha@codeaurora.org>
This commit is contained in:
Kangjie Lu 2019-03-24 18:16:02 -05:00 committed by Eric Anholt
parent f8b347064b
commit 3c77ff8f8b
1 changed files with 2 additions and 0 deletions
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2
drivers/gpu/drm/v3d/v3d_drv.c
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@ -102,6 +102,8 @@ 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);