Daniel Vetter ea497bb920 drm: rework delayed connector cleanup in connector_iter ...

PROBE_DEFER also uses system_wq to reprobe drivers, which means when
that again fails, and we try to flush the overall system_wq (to get
all the delayed connectore cleanup work_struct completed), we
deadlock.

Fix this by using just a single cleanup work, so that we can only
flush that one and don't block on anything else. That means a free
list plus locking, a standard pattern.

v2:
- Correctly free connectors only on last ref. Oops (Chris).
- use llist_head/node (Chris).

v3
- Add init_llist_head (Chris).

Fixes: a703c55004 ("drm: safely free connectors from connector_iter")
Fixes: 613051dac4 ("drm: locking&new iterators for connector_list")
Cc: Ben Widawsky <ben@bwidawsk.net>
Cc: Dave Airlie <airlied@gmail.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Sean Paul <seanpaul@chromium.org>
Cc: <stable@vger.kernel.org> # v4.11+: 613051dac4 ("drm: locking&new iterators for connector_list"
Cc: <stable@vger.kernel.org> # v4.11+
Cc: Daniel Vetter <daniel.vetter@intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Gustavo Padovan <gustavo@padovan.org>
Cc: David Airlie <airlied@linux.ie>
Cc: Javier Martinez Canillas <javier@dowhile0.org>
Cc: Shuah Khan <shuahkh@osg.samsung.com>
Cc: Guillaume Tucker <guillaume.tucker@collabora.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Kevin Hilman <khilman@baylibre.com>
Cc: Matt Hart <matthew.hart@linaro.org>
Cc: Thierry Escande <thierry.escande@collabora.co.uk>
Cc: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Cc: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171213124936.17914-1-daniel.vetter@ffwll.ch

2017-12-13 22:59:00 +01:00

..

bridge

drm/bridge/sii8620: add remote control support

2017-10-11 13:14:25 +02:00

i2c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

tinydrm

drm/tinydrm: Generalize tinydrm_xrgb8888_to_gray8()

2017-08-09 17:55:50 +02:00

ttm

drm/ttm: fix populate_and_map() functions once more

2017-11-29 14:42:35 -05:00

amd_asic_type.h

drm/amdgpu Moving amdgpu asic types to a separate file

2017-10-18 10:56:27 -04:00

ati_pcigart.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

drm_agpsupport.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

drm_atomic_helper.h

drm: Nuke drm_atomic_helper_connector_dpms

2017-08-08 14:48:48 +02:00

drm_atomic.h

drm/atomic: Make atomic iterators less surprising

2017-10-06 11:06:11 +02:00

drm_auth.h

drm: Add drm_object lease infrastructure [v5]

2017-10-25 16:31:29 +10:00

drm_blend.h

drm: Add DRM_MODE_ROTATE_ and DRM_MODE_REFLECT_ to UAPI

2017-05-22 09:49:48 +02:00

drm_bridge.h

drm/bridge: change return type of drm_bridge_add function

2017-08-21 08:51:53 +05:30

drm_cache.h

drm: Move drm_clflush prototypes to drm_cache header file

2017-01-10 11:17:01 +01:00

drm_color_mgmt.h

drm: drm_color_mgmt.h needs struct drm_crtc declaration

2017-05-02 10:30:23 +02:00

drm_connector.h

drm: rework delayed connector cleanup in connector_iter

2017-12-13 22:59:00 +01:00

drm_crtc_helper.h

drm/atomic: Acquire connection_mutex lock in drm_helper_probe_single_connector_modes, v4.

2017-04-06 21:29:23 +02:00

drm_crtc.h

drm/mode_object: fix documentation for object lookups.

2017-11-10 13:50:47 +10:00

drm_debugfs_crc.h

drm: Add API for capturing frame CRCs

2016-10-17 16:44:34 +02:00

drm_debugfs.h

drm/debugfs: Add kerneldoc

2017-03-24 09:36:06 +01:00

drm_device.h

drm: Extract drm_device.h

2017-08-11 10:47:17 +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: Fix LSPCON kernel-doc

2016-10-19 18:20:40 +03:00

drm_dp_helper.h

Merge remote-tracking branch 'pfdo/drm-next' into drm-next

2017-10-17 10:53:43 +10:00

drm_dp_mst_helper.h

drm/dp/mst: Sideband message transaction to power up/down nodes

2017-09-11 16:03:57 +03:00

drm_drv.h

drm: vblank: use ktime_t instead of timeval

2017-10-13 08:34:46 +10:00

drm_edid.h

drm: Update edid-derived drm_display_info fields at edid property set [v2]

2017-12-13 14:51:37 +01:00

drm_encoder_slave.h

drm: Don't include <drm/drm_encoder.h> in <drm/drm_crtc.h>

2016-12-18 16:29:29 +05:30

drm_encoder.h

drm/mode_object: fix documentation for object lookups.

2017-11-10 13:50:47 +10:00

drm_fb_cma_helper.h

Merge tag 'drm-for-v4.15' of git://people.freedesktop.org/~airlied/linux

2017-11-15 20:42:10 -08:00

drm_fb_helper.h

drm: remove unused and redundant callbacks

2017-08-07 11:20:36 +02:00

drm_file.h

drm: introduce sync objects (v4)

2017-06-14 12:10:22 +10:00

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/kms-helpers: Use recommened kerneldoc for struct member refs

2017-01-25 16:18:57 +01:00

drm_fourcc.h

drm: Add mode_config .get_format_info() hook

2017-03-22 19:45:00 +02:00

drm_framebuffer.h

drm: Pass struct drm_file * to __drm_mode_object_find [v2]

2017-10-12 10:03:04 +10:00

drm_gem_cma_helper.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

drm_gem_framebuffer_helper.h

drm/gem-fb-helper: Use debug message on gem lookup failure

2017-09-16 14:06:53 +02:00

drm_gem.h

drm/gem: Add drm_gem_dumb_map_offset()

2017-07-29 13:49:55 +02:00

drm_global.h

drm: drop extern from function decls

2017-03-24 09:36:06 +01:00

drm_hashtab.h

drm: drop extern from function decls

2017-03-24 09:36:06 +01:00

drm_ioctl.h

new helper: drm_ioctl_kernel()

2017-05-27 15:39:28 -04:00

drm_irq.h

drm: Extract drm_vblank.[hc]

2017-06-01 08:02:14 +02:00

drm_lease.h

drm: Add four ioctls for managing drm mode object leases [v7]

2017-10-25 16:31:30 +10:00

drm_legacy.h

drm: document drm_auth.c

2016-06-21 22:10:55 +02:00

drm_mipi_dsi.h

drm/dsi: Implement DCS set/get display brightness

2016-08-24 13:34:00 +02:00

drm_mm.h

lib/interval_tree: fast overlap detection

2017-09-08 18:26:49 -07:00

drm_mode_config.h

drm: rework delayed connector cleanup in connector_iter

2017-12-13 22:59:00 +01:00

drm_mode_object.h

drm: Add four ioctls for managing drm mode object leases [v7]

2017-10-25 16:31:30 +10:00

drm_modes.h

drm: add helper functions for YCBCR420 handling

2017-07-14 21:23:54 +03:00

drm_modeset_helper_vtables.h

drm/vtables: Fix typo

2017-09-01 19:50:24 +02:00

drm_modeset_helper.h

drm: Pass 'dev' to drm_helper_mode_fill_fb_struct()

2016-12-15 14:03:30 +02:00

drm_modeset_lock.h

drm/atomic: Prepare drm_modeset_lock infrastructure for interruptible waiting, v2.

2017-09-13 09:50:52 +02:00

drm_of.h

Merge tag 'drm-for-v4.15' of git://people.freedesktop.org/~airlied/linux

2017-11-15 20:42:10 -08:00

drm_os_linux.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

drm_panel.h

drm: make drm_panel.h self-contained

2017-05-16 17:17:02 +02:00

drm_pci.h

drm/pci: Deprecate drm_pci_init/exit completely

2017-06-20 10:41:03 +02:00

drm_pciids.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

drm_plane_helper.h

drm: Add acquire ctx parameter to ->plane_disable

2017-03-29 09:14:58 +02:00

drm_plane.h

drm/mode_object: fix documentation for object lookups.

2017-11-10 13:50:47 +10:00

drm_prime.h

drm: Extract drm_vblank.[hc]

2017-06-01 08:02:14 +02:00

drm_print.h

drm: drm_printer: add __printf validation

2017-02-26 21:43:08 +01:00

drm_property.h

drm/mode_object: fix documentation for object lookups.

2017-11-10 13:50:47 +10:00

drm_rect.h

drm/doc: move printf helpers out of drmP.h

2017-05-31 09:59:41 +02:00

drm_scdc_helper.h

drm: Fix warning when building docs for scdc_helper

2017-07-31 14:24:14 +02:00

drm_simple_kms_helper.h

drm: Plumb modifiers through plane init

2017-08-01 17:50:06 +01:00

drm_syncobj.h

drm/syncobj: add a new helper drm_syncobj_get_fd

2017-10-06 16:47:53 -04:00

drm_sysfs.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

drm_vblank.h

drm: Add CRTC_GET_SEQUENCE and CRTC_QUEUE_SEQUENCE ioctls [v3]

2017-10-23 11:15:03 +10:00

drm_vma_manager.h

drm: Extract drm_prime.h

2017-03-09 16:18:02 +01:00

drmP.h

drm: Add new LEASE debug level

2017-10-25 16:31:29 +10:00

gma_drm.h

drm/gma500: Remove unused ioctls

2014-03-17 20:11:57 +01:00

i915_component.h

drm/i915/dp: DP audio API changes for MST

2016-09-22 09:01:55 -07:00

i915_drm.h

drm: avoid "possible bad bitmask?" warning

2016-08-09 22:18:26 +02:00

i915_pciids.h

drm/i915/kbl: Change a KBL pci id to GT2 from GT1.5

2017-09-21 06:22:29 -07:00

intel_lpe_audio.h

ALSA: x86: Register multiple PCM devices for the LPE audio card

2017-05-03 16:24:00 +03:00

intel-gtt.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00