From 1d2ac403ae3bfde7c50328ee0d39d3fb3d8d9823 Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Tue, 26 Apr 2016 19:29:41 +0200 Subject: 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 Reviewed-by: Alex Deucher Reviewed-by: Chris Wilson Signed-off-by: Daniel Vetter Link: http://patchwork.freedesktop.org/patch/msgid/1461691808-12414-9-git-send-email-daniel.vetter@ffwll.ch --- drivers/gpu/drm/drm_drv.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/gpu/drm/drm_drv.c') diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c index e1fb52d4f72c..bff89226a344 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); -- cgit v1.2.3