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| author |   Noralf Trønnes <noralf@tronnes.org> | 2019-02-25 15:42:32 +0100 |
|---|---|---|
| committer | Noralf Trønnes <noralf@tronnes.org> | 2019-03-04 15:32:21 +0100 |
| commit | 9d5645ad1b979c99326e13ac51e1826ffe60aaec (patch) | |
| tree | 31513f9a5bd35f5b572ef7bdd3d91870607b05a0 /drivers/gpu/drm/drm_kms_helper_common.c | |
| parent | drm/tinydrm: Remove tinydrm_device (diff) | |
| download | wireguard-linux-9d5645ad1b979c99326e13ac51e1826ffe60aaec.tar.xz wireguard-linux-9d5645ad1b979c99326e13ac51e1826ffe60aaec.zip | |
drm/tinydrm: Use drm_dev_enter/exit()
This protects device resources from use after device removal.
There are 3 ways for driver-device unbinding to happen:
- The driver module is unloaded causing the driver to be unregistered.
This can't happen as long as there are open file handles because a
reference is taken on the module.
- The device is removed (Device Tree overlay unloading).
This can happen at any time.
- The driver sysfs unbind file can be used to unbind the driver from the
device. This can happen any time.
v2: Since drm_atomic_helper_shutdown() has to be called after
drm_dev_unplug() we don't want do block ->disable after unplug.
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190225144232.20761-8-noralf@tronnes.org
Diffstat (limited to 'drivers/gpu/drm/drm_kms_helper_common.c')
0 files changed, 0 insertions, 0 deletions