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| author | Dave Airlie <airlied@redhat.com> | 2018-06-20 08:57:41 +0200 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2018-06-20 08:58:31 +0200 |
| commit | 4216c1b9aff68b99c139d4a2d4c9aae9c1b77274 (patch) | |
| tree | 079e02eaf33fb9da1b528df670692b3578d3cfdc /drivers/gpu/drm/drm_drv.c | |
| parent | Merge branch 'linux-4.18' of git://github.com/skeggsb/linux into drm-fixes (diff) | |
| parent | drm: Fix possible race conditions while unplugging DRM device (diff) | |
| download | linux-4216c1b9aff68b99c139d4a2d4c9aae9c1b77274.tar.xz linux-4216c1b9aff68b99c139d4a2d4c9aae9c1b77274.zip | |
Merge tag 'drm-misc-next-fixes-2018-06-15' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes
Single fix for v4.18:
- Fix possible race conditions while unplugging DRM device.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1fd8b7d1-e60a-0105-dfb5-d36f99ea0239@linux.intel.com
Diffstat (limited to 'drivers/gpu/drm/drm_drv.c')
| -rw-r--r-- | drivers/gpu/drm/drm_drv.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c index b553a6f2ff0e..7af748ed1c58 100644 --- a/drivers/gpu/drm/drm_drv.c +++ b/drivers/gpu/drm/drm_drv.c @@ -369,13 +369,6 @@ EXPORT_SYMBOL(drm_dev_exit); */ void drm_dev_unplug(struct drm_device *dev) { - drm_dev_unregister(dev); - - mutex_lock(&drm_global_mutex); - if (dev->open_count == 0) - drm_dev_put(dev); - mutex_unlock(&drm_global_mutex); - /* * After synchronizing any critical read section is guaranteed to see * the new value of ->unplugged, and any critical section which might @@ -384,6 +377,13 @@ void drm_dev_unplug(struct drm_device *dev) */ dev->unplugged = true; synchronize_srcu(&drm_unplug_srcu); + + drm_dev_unregister(dev); + + mutex_lock(&drm_global_mutex); + if (dev->open_count == 0) + drm_dev_put(dev); + mutex_unlock(&drm_global_mutex); } EXPORT_SYMBOL(drm_dev_unplug); |