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| author | Sean Paul <seanpaul@chromium.org> | 2018-11-29 15:36:48 -0500 |
|---|---|---|
| committer | Sean Paul <seanpaul@chromium.org> | 2018-11-30 10:01:34 -0500 |
| commit | 615aa3d9aee28806f947cd1d99f1fd1f9b3e35b6 (patch) | |
| tree | bb47af48fa527fb3294992be8105d1082ab2cb0c /drivers | |
| parent | f6d266c279c01708c2937849bae57210af952fa2 (diff) | |
| download | linux-615aa3d9aee28806f947cd1d99f1fd1f9b3e35b6.tar.bz2 | |
drm: Fix compiler warning in drm_atomic_helper.c
Kbuild was complaining about:
>> drivers/gpu/drm/drm_atomic_helper.c:3169:27: warning: 'state' may be used uninitialized in this function [-Wmaybe-uninitialized]
Now state can't actually be used uninitialized, but we'll assign a value
anyways so it stops bellyaching.
Kbuild config:
link: https://lists.01.org/pipermail/kbuild-all/2018-November/055374.html
tree: git://anongit.freedesktop.org/drm/drm-misc for-linux-next
head: b7ea04d299c78b6cf96ab281a1683ff62a74f969
commit: b7ea04d299c78b6cf96ab281a1683ff62a74f969 [4/4] drm: Add
DRM_MODESET_LOCK_BEGIN/END helpers
config: x86_64-randconfig-x017-201847 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
git checkout b7ea04d299c78b6cf96ab281a1683ff62a74f969
# save the attached .config to linux build tree
make ARCH=x86_64
Fixes: b7ea04d299c7 ("drm: Add DRM_MODESET_LOCK_BEGIN/END helpers")
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Sean Paul <seanpaul@chromium.org>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <maxime.ripard@bootlin.com>
Cc: Sean Paul <sean@poorly.run>
Cc: David Airlie <airlied@linux.ie>
Cc: dri-devel@lists.freedesktop.org
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
[seanpaul added extra details on airlied's suggestion]
Link: https://patchwork.freedesktop.org/patch/msgid/20181129203652.223634-1-sean@poorly.run
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/drm_atomic_helper.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c index 0d58c40aa440..0ee83efeb94a 100644 --- a/drivers/gpu/drm/drm_atomic_helper.c +++ b/drivers/gpu/drm/drm_atomic_helper.c @@ -3169,6 +3169,9 @@ struct drm_atomic_state *drm_atomic_helper_suspend(struct drm_device *dev) struct drm_atomic_state *state; int err; + /* This can never be returned, but it makes the compiler happy */ + state = ERR_PTR(-EINVAL); + DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, err); state = drm_atomic_helper_duplicate_state(dev, &ctx); |