linux/drivers/base/test
David Gow 699fb50d99 drivers: base: Free devm resources when unregistering a device
In the current code, devres_release_all() only gets called if the device
has a bus and has been probed.

This leads to issues when using bus-less or driver-less devices where
the device might never get freed if a managed resource holds a reference
to the device. This is happening in the DRM framework for example.

We should thus call devres_release_all() in the device_del() function to
make sure that the device-managed actions are properly executed when the
device is unregistered, even if it has neither a bus nor a driver.

This is effectively the same change than commit 2f8d16a996 ("devres:
release resources on device_del()") that got reverted by commit
a525a3ddea ("driver core: free devres in device_release") over
memory leaks concerns.

This patch effectively combines the two commits mentioned above to
release the resources both on device_del() and device_release() and get
the best of both worlds.

Fixes: a525a3ddea ("driver core: free devres in device_release")
Signed-off-by: David Gow <davidgow@google.com>
Signed-off-by: Maxime Ripard <mripard@kernel.org>
Link: https://lore.kernel.org/r/20230720-kunit-devm-inconsistencies-test-v3-3-6aa7e074f373@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-08-12 13:06:16 +02:00
..
.kunitconfig drivers: base: Add basic devm tests for root devices 2023-08-12 13:06:15 +02:00
Kconfig drivers: base: Add basic devm tests for root devices 2023-08-12 13:06:15 +02:00
Makefile drivers: base: Add basic devm tests for platform devices 2023-08-12 13:06:16 +02:00
platform-device-test.c drivers: base: Free devm resources when unregistering a device 2023-08-12 13:06:16 +02:00
property-entry-test.c software node: Switch property entry test to a new API 2023-01-17 19:04:26 +01:00
root-device-test.c drivers: base: Free devm resources when unregistering a device 2023-08-12 13:06:16 +02:00
test_async_driver_probe.c driver core: test_async: fix an error code 2023-08-05 08:31:41 +02:00