diff options
| author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2016-04-26 17:29:41 (GMT) |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2016-04-27 08:16:17 (GMT) |
| commit | 1d2ac403ae3bfde7c50328ee0d39d3fb3d8d9823 (patch) | |
| tree | ebdb7a84d3399feeb2e06b855f5ee04550101ea4 /drivers/gpu/drm/drm_drv.c | |
| parent | f47dbdd75bf3388ce8107c2e7e5a1eebd3700dd5 (diff) | |
| download | linux-1d2ac403ae3bfde7c50328ee0d39d3fb3d8d9823.tar.xz | |
drm: Protect dev->filelist with its own mutex
amdgpu gained dev->struct_mutex usage, and that's because it's walking
the dev->filelist list. Protect that list with it's own lock to take
one more step towards getting rid of struct_mutex usage in drivers
once and for all.
While doing the conversion I noticed that 2 debugfs files in i915
completely lacked appropriate locking. Fix that up too.
v2: don't forget to switch to drm_gem_object_unreference_unlocked.
Cc: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1461691808-12414-9-git-send-email-daniel.vetter@ffwll.ch
Diffstat (limited to 'drivers/gpu/drm/drm_drv.c')
| -rw-r--r-- | drivers/gpu/drm/drm_drv.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c index e1fb52d..bff8922 100644 --- a/drivers/gpu/drm/drm_drv.c +++ b/drivers/gpu/drm/drm_drv.c @@ -590,6 +590,7 @@ struct drm_device *drm_dev_alloc(struct drm_driver *driver, spin_lock_init(&dev->buf_lock); spin_lock_init(&dev->event_lock); mutex_init(&dev->struct_mutex); + mutex_init(&dev->filelist_mutex); mutex_init(&dev->ctxlist_mutex); mutex_init(&dev->master_mutex); |