Chris Wilson a4fce9cb78 drm/prime: Take a ref on the drm_dev when exporting a dma_buf ... dma_buf may live a long time, longer than the last direct user of the driver. We already hold a reference to the owner module (that prevents the object code from disappearing), but there is no reference to the drm_dev - so the pointers to the driver backend themselves may vanish. v2: Resist temptation to fix the bug in armada_gem.c not setting the correct flags on the exported dma-buf (it should pass the flags through and not be arbitrarily setting O_RDWR). Use a common wrapper for exporting the dmabuf and acquiring the reference to the drm_device. Testcase: igt/vgem_basic/unload Suggested-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Petri Latvala <petri.latvala@intel.com> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: stable@vger.kernel.org Tested-by: Petri Latvala <petri.latvala@intel.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/20161005122145.1507-2-chris@chris-wilson.co.uk		2016-10-05 15:30:32 +02:00
..
bridge	drm/bridge: analogix_dp: Add analogix_dp_psr_supported	2016-10-04 08:23:16 +02:00
i2c	drm/i2c: tda998x: Register ASoC hdmi-codec and add audio DT binding	2016-09-07 13:10:10 +01:00
ttm	drm/ttm: remove cpu_address member from ttm_tt	2016-09-16 15:53:05 -04:00
ati_pcigart.h	drm: Move legacy buffer structures to <drm/drm_legacy.h>	2014-09-12 15:28:12 +02:00
drm_agpsupport.h	drm: Give drm_agp_clear drm_legacy_ prefix	2016-04-27 08:41:34 +02:00
drm_atomic_helper.h	drm/fence: allow fence waiting to be interrupted by userspace	2016-09-12 16:59:15 -04:00
drm_atomic.h	drm: Extract drm_plane.[hc]	2016-09-22 00:01:56 -07:00
drm_auth.h	drm: document drm_auth.c	2016-06-21 22:10:55 +02:00
drm_blend.h	drm: Fix plane type uabi breakage	2016-09-22 23:52:12 -07:00
drm_bridge.h	drm: Extract drm_bridge.h	2016-09-19 15:04:15 +02:00
drm_cache.h	drm: Loongson-3 doesn't fully support wc memory	2016-04-22 10:24:11 +10:00
drm_color_mgmt.h	drm/doc: Document color space handling	2016-09-22 00:04:03 -07:00
drm_connector.h	drm/edid: Move dvi_dual/max_tmds_clock to drm_display_info	2016-10-04 08:23:10 +02:00
drm_crtc_helper.h	drm/kms-helpers: Extract drm_modeset_helper.[hc]	2016-08-16 16:10:19 +02:00
drm_crtc.h	drm: Document caveats around atomic event handling	2016-10-04 08:23:15 +02:00
drm_displayid.h	drm/edid: add displayid detailed 1 timings to the modelist. (v1.1)	2016-05-23 11:35:31 +10:00
drm_dp_dual_mode_helper.h	drm: Add helper for DP++ adaptors	2016-05-23 11:10:46 +03:00
drm_dp_helper.h	drm: Add DP branch device info on debugfs	2016-09-15 14:51:07 +03:00
drm_dp_mst_helper.h	drm/dp-mst: Missing kernel doc	2016-07-19 10:31:53 +02:00
drm_edid.h	drm: Move all decl for drm_edid.c to drm_edid.h	2016-09-19 15:04:32 +02:00
drm_encoder_slave.h	drm: Constify drm_encoder_slave_funcs	2015-12-15 13:41:17 +01:00
drm_encoder.h	drm: Move a few macros away from drm_crtc.h	2016-09-19 15:03:46 +02:00
drm_fb_cma_helper.h	drm/fb_cma_helper: add suspend helper	2016-06-18 18:33:54 -07:00
drm_fb_helper.h	drm/fb-helper: add DRM_FB_HELPER_DEFAULT_OPS for fb_ops	2016-10-04 08:23:16 +02:00
drm_fixed.h	drm: Add drm_fixp_from_fraction and drm_fixp2int_ceil	2016-02-05 15:23:48 +10:00
drm_flip_work.h	drm: flip-work: change drm_flip_work_init prototype	2014-11-15 09:29:14 +10:00
drm_fourcc.h	drm: move drm_mode_legacy_fb_format to drm_fourcc.c	2016-08-29 15:37:28 +02:00
drm_framebuffer.h	drm: Move a few macros away from drm_crtc.h	2016-09-19 15:03:46 +02:00
drm_gem_cma_helper.h	drm/cma: Introduce drm_gem_cma_dumb_create_internal()	2014-11-13 13:27:17 +01:00
drm_gem.h	drm/doc: Fix more kerneldoc/sphinx warnings	2016-08-16 16:09:58 +02:00
drm_global.h	drm: move ttm global code to core drm	2010-08-04 09:46:06 +10:00
drm_hashtab.h	drm: Add a hash-tab rcu-safe API	2012-11-28 18:36:05 +10:00
drm_irq.h	drm: Extract&Document drm_irq.h	2016-07-19 10:29:47 +02:00
drm_legacy.h	drm: document drm_auth.c	2016-06-21 22:10:55 +02:00
drm_mem_util.h	drm,i915: Introduce drm_malloc_gfp()	2016-04-11 17:13:10 +01:00
drm_mipi_dsi.h	drm/dsi: Implement DCS set/get display brightness	2016-08-24 13:34:00 +02:00
drm_mm.h	drm: Track drm_mm nodes with an interval tree	2016-08-08 10:05:16 +02:00
drm_mode_object.h	drm: Extract drm_bridge.h	2016-09-19 15:04:15 +02:00
drm_modes.h	drm: Extract drm_bridge.h	2016-09-19 15:04:15 +02:00
drm_modeset_helper_vtables.h	drm/atomic-helper: Add atomic_disable CRTC helper callback	2016-08-29 10:21:52 +02:00
drm_modeset_helper.h	drm/kms-helpers: Extract drm_modeset_helper.[hc]	2016-08-16 16:10:19 +02:00
drm_modeset_lock.h	drm: Implement drm_modeset_lock_all_ctx()	2015-12-02 23:10:59 +01:00
drm_of.h	drm: add drm_of_encoder_active_endpoint helpers	2016-02-10 14:19:21 +01:00
drm_os_linux.h	drm: Kill DRM_SUSER	2013-12-18 11:35:45 +10:00
drm_panel.h	drm/panel: Flesh out kerneldoc	2016-05-06 16:04:48 +02:00
drm_pciids.h	drm/radeon: add new OLAND pci id	2015-08-12 12:24:05 -04:00
drm_plane_helper.h	drm/kms-helpers: Extract drm_modeset_helper.[hc]	2016-08-16 16:10:19 +02:00
drm_plane.h	drm: Fix plane type uabi breakage	2016-09-22 23:52:12 -07:00
drm_property.h	drm: Move a few macros away from drm_crtc.h	2016-09-19 15:03:46 +02:00
drm_rect.h	drm: Add "prefix" parameter to drm_rect_debug_print()	2015-11-24 11:47:46 +01:00
drm_simple_kms_helper.h	drm: simple_kms_helper: Add prepare_fb and cleanup_fb hooks	2016-10-05 15:18:02 +02:00
drm_sysfs.h	drm: Enable drm drivers to add drm sysfs devices.	2009-08-19 16:08:51 +10:00
drm_vma_manager.h	drm: use drm_file to tag vm-bos	2016-09-19 11:22:08 +02:00
drmP.h	drm/prime: Take a ref on the drm_dev when exporting a dma_buf	2016-10-05 15:30:32 +02:00
gma_drm.h	drm/gma500: Remove unused ioctls	2014-03-17 20:11:57 +01:00
i915_component.h	drm/i915: Add get_eld audio component	2015-12-10 13:39:27 +01:00
i915_drm.h	drm: avoid "possible bad bitmask?" warning	2016-08-09 22:18:26 +02:00
i915_pciids.h	drm/i915: Remove .is_mobile field from platform struct	2016-09-07 16:07:07 -07:00
intel-gtt.h	drm/i915: Add support for mapping an object page by page	2016-06-13 10:03:54 +01:00