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Marc Zyngier e78ad18ba3 drm/meson: Unbind all connectors on module removal
Removing the meson DRM module results in the following splats:

[   42.689228] WARNING: CPU: 0 PID: 572 at drivers/gpu/drm/drm_irq.c:192 drm_irq_uninstall+0x130/0x160 [drm]
[...]
[   42.812820] Hardware name:  , BIOS 2021.01-rc2-00012-gde865f7ee1 11/16/2020
[   42.819723] pstate: 80400089 (Nzcv daIf +PAN -UAO -TCO BTYPE=--)
[   42.825737] pc : drm_irq_uninstall+0x130/0x160 [drm]
[   42.830647] lr : drm_irq_uninstall+0xc4/0x160 [drm]
[...]
[   42.917614] Call trace:
[   42.920086]  drm_irq_uninstall+0x130/0x160 [drm]
[   42.924612]  meson_drv_unbind+0x68/0xa4 [meson_drm]
[   42.929436]  component_del+0xc0/0x180
[   42.933058]  meson_dw_hdmi_remove+0x28/0x40 [meson_dw_hdmi]
[   42.938576]  platform_drv_remove+0x38/0x60
[   42.942628]  __device_release_driver+0x190/0x23c
[   42.947198]  driver_detach+0xcc/0x160
[   42.950822]  bus_remove_driver+0x68/0xe0
[   42.954702]  driver_unregister+0x3c/0x6c
[   42.958583]  platform_driver_unregister+0x20/0x2c
[   42.963243]  meson_dw_hdmi_platform_driver_exit+0x18/0x4a8 [meson_dw_hdmi]
[   42.970057]  __arm64_sys_delete_module+0x1bc/0x294
[   42.974801]  el0_svc_common.constprop.0+0x80/0x240
[   42.979542]  do_el0_svc+0x30/0xa0
[   42.982821]  el0_svc+0x18/0x50
[   42.985839]  el0_sync_handler+0x198/0x404
[   42.989806]  el0_sync+0x158/0x180

immediatelly followed by

[   43.002296] WARNING: CPU: 0 PID: 572 at drivers/gpu/drm/drm_mode_config.c:504 drm_mode_config_cleanup+0x2a8/0x304 [drm]
[...]
[   43.128150] Hardware name:  , BIOS 2021.01-rc2-00012-gde865f7ee1 11/16/2020
[   43.135052] pstate: 80400009 (Nzcv daif +PAN -UAO -TCO BTYPE=--)
[   43.141062] pc : drm_mode_config_cleanup+0x2a8/0x304 [drm]
[   43.146492] lr : drm_mode_config_cleanup+0xac/0x304 [drm]
[...]
[   43.233979] Call trace:
[   43.236451]  drm_mode_config_cleanup+0x2a8/0x304 [drm]
[   43.241538]  drm_mode_config_init_release+0x1c/0x2c [drm]
[   43.246886]  drm_managed_release+0xa8/0x120 [drm]
[   43.251543]  drm_dev_put+0x94/0xc0 [drm]
[   43.255380]  meson_drv_unbind+0x78/0xa4 [meson_drm]
[   43.260204]  component_del+0xc0/0x180
[   43.263829]  meson_dw_hdmi_remove+0x28/0x40 [meson_dw_hdmi]
[   43.269344]  platform_drv_remove+0x38/0x60
[   43.273398]  __device_release_driver+0x190/0x23c
[   43.277967]  driver_detach+0xcc/0x160
[   43.281590]  bus_remove_driver+0x68/0xe0
[   43.285471]  driver_unregister+0x3c/0x6c
[   43.289352]  platform_driver_unregister+0x20/0x2c
[   43.294011]  meson_dw_hdmi_platform_driver_exit+0x18/0x4a8 [meson_dw_hdmi]
[   43.300826]  __arm64_sys_delete_module+0x1bc/0x294
[   43.305570]  el0_svc_common.constprop.0+0x80/0x240
[   43.310312]  do_el0_svc+0x30/0xa0
[   43.313590]  el0_svc+0x18/0x50
[   43.316608]  el0_sync_handler+0x198/0x404
[   43.320574]  el0_sync+0x158/0x180
[   43.323852] ---[ end trace d796a3072dab01da ]---
[   43.328561] [drm:drm_mode_config_cleanup [drm]] *ERROR* connector HDMI-A-1 leaked!

both triggered by the fact that the HDMI subsystem is still active,
and the DRM removal doesn't result in the connectors being torn down.

Call drm_atomic_helper_shutdown() and component_unbind_all() to safely
tear the module down.

Fixes: 2d8f92897a ("drm/meson: Uninstall IRQ handler")
Signed-off-by: Marc Zyngier <maz@kernel.org>
Acked-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201116200744.495826-3-maz@kernel.org
2020-11-17 14:47:08 +01:00
arch Linux 5.10-rc3 2020-11-10 14:36:36 +01:00
block blk-mq: mark flush request as IDLE in flush_end_io() 2020-10-30 08:33:49 -06:00
certs .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
crypto drivers-5.10-2020-10-12 2020-10-13 13:04:41 -07:00
Documentation fbcon: Disable accelerated scrolling 2020-11-17 11:00:29 +01:00
drivers drm/meson: Unbind all connectors on module removal 2020-11-17 14:47:08 +01:00
fs Fixes for 5.10-rc3: 2020-11-08 10:23:07 -08:00
include drm: fix some kernel-doc markups 2020-11-16 20:48:20 +01:00
init linux-kselftest-kunit-5.10-rc1 2020-10-18 14:45:59 -07:00
ipc ipc: adjust proc_ipc_sem_dointvec definition to match prototype 2020-09-05 12:14:29 -07:00
kernel fork: fix copy_process(CLONE_PARENT) race with the exiting ->real_parent 2020-11-08 11:18:39 -08:00
lib Fonts: Add charcount field to font_desc 2020-11-16 16:31:41 +01:00
LICENSES LICENSES/deprecated: add Zlib license text 2020-09-16 14:33:49 +02:00
mm mm/truncate.c: make __invalidate_mapping_pages() static 2020-11-02 12:14:19 -08:00
net Networking fixes for 5.10-rc3, including fixes from wireless, can, 2020-11-06 11:50:28 -08:00
samples misc: mic: remove the MIC drivers 2020-10-28 19:12:03 +01:00
scripts Driver core documentation fixes for 5.10-rc3 2020-11-08 11:30:25 -08:00
security ima: Replace zero-length array with flexible-array member 2020-10-29 17:22:59 -05:00
sound ASoC: Fixes for v5.10 2020-11-05 18:19:32 +01:00
tools Linux 5.10-rc3 2020-11-10 14:36:36 +01:00
usr Merge branch 'work.fdpic' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2020-08-07 13:29:39 -07:00
virt kvm: x86/mmu: Support dirty logging for the TDP MMU 2020-10-23 03:42:13 -04:00
.clang-format RDMA 5.10 pull request 2020-10-17 11:18:18 -07:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.get_maintainer.ignore Opt out of scripts/get_maintainer.pl 2019-05-16 10:53:40 -07:00
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore .gitignore: docs: ignore sphinx_*/ directories 2020-09-10 10:44:31 -06:00
.mailmap MAINTAINERS: jarkko.sakkinen@linux.intel.com -> jarkko@kernel.org 2020-10-16 11:11:19 -07:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: Move Sangbeom Kim to credits 2020-10-26 10:11:18 +01:00
Kbuild kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS Merge drm/drm-next into drm-misc-next 2020-11-10 17:11:37 +01:00
Makefile Linux 5.10-rc3 2020-11-08 16:10:16 -08:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.