Dan Carpenter ee0c6bfbd6 drm/i915: take struct_mutex in i915_dma_cleanup() ... intel_cleanup_ring_buffer() calls drm_gem_object_unreference() (as opposed to drm_gem_object_unreference_unlocked()) so it needs to be called with "struct_mutex" held. If we don't hold the lock, it triggers a BUG_ON(!mutex_is_locked(&dev->struct_mutex)); I also audited the other places that call intel_cleanup_ring_buffer() and they all hold the lock so they're OK. This was introduced in: 8187a2b70e "drm/i915: introduce intel_ring_buffer structure (V2)" and it's a regression from v2.6.34. Addresses: https://bugzilla.kernel.org/show_bug.cgi?id=16247 Signed-off-by: Dan Carpenter <error27@gmail.com> Reported-by: Benny Halevy <bhalevy@panasas.com> Tested-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Eric Anholt <eric@anholt.net>		2010-07-01 15:41:37 -07:00
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drm	drm/i915: take struct_mutex in i915_dma_cleanup()	2010-07-01 15:41:37 -07:00
vga	Merge remote branch 'anholt/drm-intel-next' into drm-next	2010-05-19 09:35:51 +10:00
Makefile	PCI/GPU: implement VGA arbitration on Linux	2009-09-09 13:29:36 -07:00