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cb8d50dfb341e9615c8d203a3e6513dae9ff901d
linux/drivers/gpu/drm
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Tvrtko Ursulin cb8d50dfb3 drm/i915: Fixup userptr mmu notifier registration error handling 
Avoid dereferencing the error pointer and also avoid returning NULL
from i915_mmu_notifier_find since the callers do not expect that.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Fixes: 7741b547b6 ("drm/i915: Preallocate our mmu notifier workequeu to unbreak cpu hotplug deadlock")
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20171017150908.12840-1-tvrtko.ursulin@linux.intel.com
2017-10-18 09:25:39 +01:00
..
amd
Merge branch 'drm-next-4.15' of git://people.freedesktop.org/~agd5f/linux into drm-next
2017-09-28 08:37:02 +10:00
arc
drm/arc: Use drm_gem_fb_create()
2017-09-02 14:23:06 +02:00
arm
drm/arm/mali: Use drm_gem_fb_create()
2017-08-27 19:29:46 +02:00
armada
drm/armada: Use correct path to trace include
2017-09-05 11:11:20 +02:00
ast
Merge tag 'drm-misc-next-2017-08-16' of git://anongit.freedesktop.org/git/drm-misc into drm-next
2017-08-17 07:33:41 +10:00
atmel-hlcdc
drm/atmel-hlcdc: Use drm_gem_fb_create()
2017-08-27 19:30:15 +02:00
bochs
drm/bochs: Use the drm_driver.dumb_destroy default
2017-08-16 20:18:55 +02:00
bridge
Merge tag 'drm-misc-next-2017-09-20' of git://anongit.freedesktop.org/git/drm-misc into drm-next
2017-09-28 05:46:15 +10:00
cirrus
drm/cirrus: Use the drm_driver.dumb_destroy default
2017-08-16 20:14:22 +02:00
etnaviv
mm: treewide: remove GFP_TEMPORARY allocation flag
2017-09-13 18:53:16 -07:00
exynos
Merge tag 'drm-misc-next-2017-09-20' of git://anongit.freedesktop.org/git/drm-misc into drm-next
2017-09-28 05:46:15 +10:00
fsl-dcu
drm: Nuke drm_atomic_helper_connector_dpms
2017-08-08 14:48:48 +02:00
gma500
Merge tag 'drm-misc-next-2017-09-20' of git://anongit.freedesktop.org/git/drm-misc into drm-next
2017-09-28 05:46:15 +10:00
hisilicon
drm: kirin: Add mode_valid logic to avoid mode clocks we can't generate
2017-08-29 05:20:35 +10:00
i2c
drm: i2c: tda998x: constify i2c_device_id
2017-08-22 08:33:44 +02:00
i810
drm/pci: Deprecate drm_pci_init/exit completely
2017-06-20 10:41:03 +02:00
i915
drm/i915: Fixup userptr mmu notifier registration error handling
2017-10-18 09:25:39 +01:00
imx
Merge tag 'drm-misc-next-2017-09-20' of git://anongit.freedesktop.org/git/drm-misc into drm-next
2017-09-28 05:46:15 +10:00
lib
mm: treewide: remove GFP_TEMPORARY allocation flag
2017-09-13 18:53:16 -07:00
mediatek
drm/mediatek: hdmi: clean up drm_bridge_add call
2017-08-21 08:49:24 +05:30
meson
drm/meson: Use .dumb_map_offset and .dumb_destroy defaults
2017-08-16 20:11:43 +02:00
mga
Merge airlied/drm-next into drm-misc-next
2017-07-26 13:43:33 +02:00
mgag200
drm/mgag200: Use the drm_driver.dumb_destroy default
2017-08-16 20:18:22 +02:00
msm
mm: treewide: remove GFP_TEMPORARY allocation flag
2017-09-13 18:53:16 -07:00
mxsfb
drm/mxsfb: Use .dumb_map_offset and .dumb_destroy defaults
2017-08-16 20:12:19 +02:00
nouveau
dmi: Mark all struct dmi_system_id instances const
2017-09-14 11:59:30 +02:00
omapdrm
drm/omap: work-around for omap3 display enable
2017-08-23 12:22:12 +03:00
panel
drm/panel: Add driver for Seiko 43WVF1G panel
2017-08-18 17:10:45 +02:00
pl111
drm/pl111: Add handling of Versatile platforms
2017-09-10 23:58:42 +02:00
qxl
drm/qxl: Use the drm_driver.dumb_destroy default
2017-08-16 20:15:38 +02:00
r128
drm/pci: Deprecate drm_pci_init/exit completely
2017-06-20 10:41:03 +02:00
radeon
Merge branch 'drm-next-4.15' of git://people.freedesktop.org/~agd5f/linux into drm-next
2017-09-28 08:37:02 +10:00
rcar-du
Merge tag 'drm-misc-next-2017-08-08' of git://anongit.freedesktop.org/git/drm-misc into drm-next
2017-08-10 10:47:33 +10:00
rockchip
Merge tag 'drm-misc-next-2017-09-20' of git://anongit.freedesktop.org/git/drm-misc into drm-next
2017-09-28 05:46:15 +10:00
savage
drm/pci: Deprecate drm_pci_init/exit completely
2017-06-20 10:41:03 +02:00
selftests
mm: treewide: remove GFP_TEMPORARY allocation flag
2017-09-13 18:53:16 -07:00
shmobile
drm/shmobile: Use .dumb_map_offset and .dumb_destroy defaults
2017-07-29 13:57:33 +02:00
sis
drm/pci: Deprecate drm_pci_init/exit completely
2017-06-20 10:41:03 +02:00
sti
drm/sti: Use drm_gem_fb_create()
2017-08-27 19:30:49 +02:00
stm
drm/stm: fix warning about multiplication in condition
2017-09-08 10:29:11 +02:00
sun4i
Merge tag 'drm-misc-next-2017-09-20' of git://anongit.freedesktop.org/git/drm-misc into drm-next
2017-09-28 05:46:15 +10:00
tdfx
drm/pci: Deprecate drm_pci_init/exit completely
2017-06-20 10:41:03 +02:00
tegra
Merge tag 'drm/tegra/for-4.14-rc1' of git://anongit.freedesktop.org/tegra/linux into drm-next
2017-08-21 17:37:33 +10:00
tilcdc
drm/tilcdc: Use drm_gem_fb_create()
2017-09-09 18:00:58 +02:00
tinydrm
drm/tinydrm: Drop driver registered message
2017-09-16 14:07:59 +02:00
ttm
Merge branch 'drm-next-4.15' of git://people.freedesktop.org/~agd5f/linux into drm-next
2017-09-28 08:37:02 +10:00
tve200
drm/tve200: Clean up panel bridging
2017-09-11 20:32:56 +02:00
udl
Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2017-09-04 12:21:28 -07:00
vc4
drm/vc4: clean up error handling on devm_kzalloc failure
2017-09-08 11:06:54 -07:00
vgem
drm/vgem: switch to drm_*_get(), drm_*_put() helpers
2017-08-11 11:41:43 -04:00
via
drm/pci: Deprecate drm_pci_init/exit completely
2017-06-20 10:41:03 +02:00
virtio
drm/ttm: make ttm_mem_type_manager_func debug more useful
2017-08-17 15:45:59 -04:00
vmwgfx
Merge tag 'drm-for-v4.14' of git://people.freedesktop.org/~airlied/linux
2017-09-03 17:02:26 -07:00
zte
drm/zte: Use drm_gem_fb_create()
2017-08-27 19:31:06 +02:00
ati_pcigart.c
…
drm_agpsupport.c
…
drm_atomic_helper.c
Merge tag 'drm-misc-next-2017-09-20' of git://anongit.freedesktop.org/git/drm-misc into drm-next
2017-09-28 05:46:15 +10:00
drm_atomic.c
Merge tag 'drm-misc-next-2017-09-20' of git://anongit.freedesktop.org/git/drm-misc into drm-next
2017-09-28 05:46:15 +10:00
drm_auth.c
…
drm_blend.c
mm: treewide: remove GFP_TEMPORARY allocation flag
2017-09-13 18:53:16 -07:00
drm_bridge.c
drm/bridge: change return type of drm_bridge_add function
2017-08-21 08:51:53 +05:30
drm_bufs.c
switch compat_drm_mapbufs() to drm_ioctl_kernel()
2017-07-04 13:16:26 -04:00
drm_cache.c
…
drm_color_mgmt.c
drm: More links for gamma support helpers
2017-06-20 12:13:11 +02:00
drm_connector.c
drm: Drop drm_get_link_status_name()
2017-09-11 15:53:33 +03:00
drm_context.c
…
drm_crtc_helper_internal.h
drm: Add drm_{crtc/encoder/connector}_mode_valid()
2017-05-30 08:37:24 +02:00
drm_crtc_helper.c
drm: Handle properties in the core for atomic drivers
2017-08-08 14:45:09 +02:00
drm_crtc_internal.h
drm: Handle properties in the core for atomic drivers
2017-08-08 14:45:09 +02:00
drm_crtc.c
drm/crtc: Convert setcrtc ioctl locking to interruptible.
2017-09-13 09:52:05 +02:00
drm_debugfs_crc.c
drm/atomic: Prepare drm_modeset_lock infrastructure for interruptible waiting, v2.
2017-09-13 09:50:52 +02:00
drm_debugfs.c
…
drm_dma.c
…
drm_dp_aux_dev.c
drm_dp_aux_dev: switch to read_iter/write_iter
2017-07-08 20:51:46 -04:00
drm_dp_dual_mode_helper.c
drm: Add retries for lspcon mode detection
2017-10-13 12:13:54 +03:00
drm_dp_helper.c
drm/dp: Don't trust drm_dp_downstream_id()
2017-07-21 17:45:26 +03:00
drm_dp_mst_topology.c
drm/dp/mst: Sideband message transaction to power up/down nodes
2017-09-11 16:03:57 +03:00
drm_drv.c
drm: Clean up drm_dev_unplug
2017-08-11 10:49:21 +02:00
drm_dumb_buffers.c
drm/dumb-buffers: Add defaults for .dumb_map_offset and .dumb_destroy
2017-07-29 13:51:44 +02:00
drm_edid_load.c
drm: add backwards compatibility support for drm_kms_helper.edid_firmware
2017-09-19 18:11:45 +03:00
drm_edid.c
drm: handle override and firmware EDID at drm_do_get_edid() level
2017-09-19 17:49:25 +03:00
drm_encoder_slave.c
…
drm_encoder.c
…
drm_fb_cma_helper.c
drm/fb-cma-helper: Use drm_gem_framebuffer_helper
2017-08-16 21:34:38 +02:00
drm_fb_helper.c
drm/fb-helper: Avoid NULL ptr dereference in fb_set_suspend()
2017-09-02 14:37:59 +02:00
drm_file.c
drm: Document device unplug infrastructure
2017-08-11 10:48:03 +02:00
drm_flip_work.c
…
drm_fourcc.c
…
drm_framebuffer.c
Merge airlied/drm-next into drm-misc-next
2017-07-26 13:43:33 +02:00
drm_gem_cma_helper.c
drm/gem-cma-helper: Remove drm_gem_cma_dumb_map_offset()
2017-08-16 20:21:24 +02:00
drm_gem_framebuffer_helper.c
drm/gem-fb-helper: Use debug message on gem lookup failure
2017-09-16 14:06:53 +02:00
drm_gem.c
Merge tag 'drm-misc-next-2017-09-20' of git://anongit.freedesktop.org/git/drm-misc into drm-next
2017-09-28 05:46:15 +10:00
drm_global.c
…
drm_hashtab.c
…
drm_info.c
…
drm_internal.h
drm/syncobj: Add a signal ioctl (v3)
2017-08-29 10:16:25 +10:00
drm_ioc32.c
Merge airlied/drm-next into drm-misc-next
2017-07-26 13:43:33 +02:00
drm_ioctl.c
drm/syncobj: Add a signal ioctl (v3)
2017-08-29 10:16:25 +10:00
drm_irq.c
drm/doc: Polish irq helper documentation
2017-06-01 08:02:14 +02:00
drm_kms_helper_common.c
drm: add backwards compatibility support for drm_kms_helper.edid_firmware
2017-09-19 18:11:45 +03:00
drm_legacy.h
switch compat_drm_mapbufs() to drm_ioctl_kernel()
2017-07-04 13:16:26 -04:00
drm_lock.c
…
drm_memory.c
…
drm_mipi_dsi.c
drm: Convert to using %pOF instead of full_name
2017-07-26 13:45:06 +02:00
drm_mm.c
lib/interval_tree: fast overlap detection
2017-09-08 18:26:49 -07:00
drm_mode_config.c
drm: Create a format/modifier blob
2017-08-01 17:50:06 +01:00
drm_mode_object.c
drm: Make __drm_object_property_get_value() static
2017-09-11 15:53:33 +03:00
drm_modes.c
drm/modes: Fix drm_mode_is_420_only() comment
2017-07-31 14:23:30 +02:00
drm_modeset_helper.c
drm: Plumb modifiers through plane init
2017-08-01 17:50:06 +01:00
drm_modeset_lock.c
drm/atomic: Prepare drm_modeset_lock infrastructure for interruptible waiting, v2.
2017-09-13 09:50:52 +02:00
drm_of.c
drm: Convert to using %pOF instead of full_name
2017-07-26 13:45:06 +02:00
drm_panel.c
…
drm_pci.c
drm/pci: Deprecate drm_pci_init/exit completely
2017-06-20 10:41:03 +02:00
drm_plane_helper.c
…
drm_plane.c
Merge tag 'drm-misc-next-2017-09-20' of git://anongit.freedesktop.org/git/drm-misc into drm-next
2017-09-28 05:46:15 +10:00
drm_prime.c
…
drm_print.c
…
drm_probe_helper.c
drm: handle override and firmware EDID at drm_do_get_edid() level
2017-09-19 17:49:25 +03:00
drm_property.c
drm: rename, adjust and export drm_atomic_replace_property_blob
2017-07-14 15:53:06 +02:00
drm_rect.c
…
drm_scatter.c
…
drm_scdc_helper.c
Merge tag 'drm-misc-next-2017-09-20' of git://anongit.freedesktop.org/git/drm-misc into drm-next
2017-09-28 05:46:15 +10:00
drm_simple_kms_helper.c
drm: Plumb modifiers through plane init
2017-08-01 17:50:06 +01:00
drm_syncobj.c
Merge tag 'drm-misc-next-2017-09-20' of git://anongit.freedesktop.org/git/drm-misc into drm-next
2017-09-28 05:46:15 +10:00
drm_sysfs.c
…
drm_trace_points.c
…
drm_trace.h
drm: Use correct path to trace include
2017-09-05 11:11:18 +02:00
drm_vblank.c
Merge airlied/drm-next into drm-misc-next
2017-07-26 13:43:33 +02:00
drm_vm.c
Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2017-09-04 12:21:28 -07:00
drm_vma_manager.c
lib/interval_tree: fast overlap detection
2017-09-08 18:26:49 -07:00
Kconfig
Merge branch 'drm-next-4.15' of git://people.freedesktop.org/~agd5f/linux into drm-next
2017-09-28 08:37:02 +10:00
Makefile
Merge branch 'drm-next-4.15' of git://people.freedesktop.org/~agd5f/linux into drm-next
2017-09-28 08:37:02 +10:00