linux/drivers/base
Maxime Ripard b4cc44301b drivers: base: Add basic devm tests for platform devices
Platform devices show some inconsistencies with how devm resources are
released when the device has been probed and when it hasn't.

In particular, we can register device-managed actions no matter if the
device has be bound to a driver or not, but devres_release_all() will
only be called if it was bound to a driver or if there's no reference
held to it anymore.

If it wasn't bound to a driver and we still have a reference,
devres_release_all() will never get called. This is surprising
considering that if the driver isn't bound but doesn't have any
reference to it anymore, that function will get called, and if it was
bound to a driver but still has references, that function will get
called as well.

Even if that case is fairly unusual, it can easily lead to memory leaks.

The plan is, with the next patch, to make it consistent and enforce that
devres_release_all() is called no matter what situation we're in. For
now, it just tests for the current behaviour and skips over the
inconsistencies.

Reviewed-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-v3-2-6aa7e074f373@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-08-12 13:06:16 +02:00
..
firmware_loader firmware_loader: Fix a NULL vs IS_ERR() check 2023-05-31 20:31:00 +01:00
power PM: sleep: wakeirq: drop unused enable helpers 2023-07-24 09:51:51 +02:00
regmap regmap: Disable locking for RBTREE and MAPLE unit tests 2023-07-20 13:57:01 +01:00
test drivers: base: Add basic devm tests for platform devices 2023-08-12 13:06:16 +02:00
arch_numa.c mm: percpu: add generic pcpu_populate_pte() function 2022-01-20 08:52:52 +02:00
arch_topology.c arch_topology: Remove early cacheinfo error message if -ENOENT 2023-04-14 10:13:38 +01:00
attribute_container.c driver core: attribute_container: fix W=1 warnings 2021-05-14 13:37:10 +02:00
auxiliary.c driver core: make struct bus_type.uevent() take a const * 2023-01-27 13:45:52 +01:00
base.h driver core: class: make class_register() take a const * 2023-04-03 21:42:46 +02:00
bus.c driver core: bus: constify bus_get() 2023-03-23 13:21:24 +01:00
cacheinfo.c drivers: base: cacheinfo: Update cpu_map_populated during CPU Hotplug 2023-05-31 20:36:47 +01:00
class.c driver core: class: properly reference count class_dev_iter() 2023-05-19 11:03:36 +01:00
component.c drivers: base: component: fix memory leak with using debugfs_lookup() 2023-02-08 13:33:10 +01:00
container.c
core.c driver core: update comments in device_rename() 2023-04-20 14:19:25 +02:00
cpu.c driver/base/cpu: Retry online operation if -EBUSY 2023-08-05 08:31:41 +02:00
dd.c driver core: Call dma_cleanup() on the test_remove path 2023-08-05 08:31:41 +02:00
devcoredump.c driver core: class: mark the struct class for sysfs callbacks as constant 2023-03-29 07:54:58 +02:00
devres.c drivers/base: use ARCH_DMA_MINALIGN instead of ARCH_KMALLOC_MINALIGN 2023-06-19 16:19:20 -07:00
devtmpfs.c driver core: clean up the logic to determine which /sys/dev/ directory to use 2023-03-31 17:45:07 +02:00
driver.c driver core: create bus_is_registered() 2023-02-09 10:43:35 +01:00
firmware.c
hypervisor.c
init.c init: Initialize noop_backing_dev_info early 2022-06-16 10:55:57 +02:00
isa.c isa: Remove unnecessary checks 2023-05-31 19:03:39 +01:00
Kconfig driver core: Add CONFIG_FW_DEVLINK_SYNC_STATE_TIMEOUT 2023-03-28 18:45:59 +02:00
Makefile genirq: Get rid of GENERIC_MSI_IRQ_DOMAIN 2022-11-17 15:15:20 +01:00
map.c driver: base: Prefer unsigned int to bare use of unsigned 2021-07-21 17:30:09 +02:00
memory.c drivers/base/memory: Fix comments for phys_index_show() 2023-01-20 14:15:00 +01:00
module.c
node.c base/node: Remove duplicated include 2023-08-12 13:00:56 +02:00
physical_location.c driver core: location: Free struct acpi_pld_info *pld before return false 2023-01-20 14:20:30 +01:00
physical_location.h driver core: physical_location.h remove extern from function prototypes 2023-03-24 15:35:48 +01:00
pinctrl.c
platform-msi.c genirq/msi, platform-msi: Ensure that MSI descriptors are unreferenced 2023-03-02 18:09:44 +01:00
platform.c driver core: platform: simplify __platform_driver_probe() 2023-02-01 14:08:10 +01:00
property.c drivers: fwnode: fix fwnode_irq_get[_byname]() 2023-06-15 13:37:35 +02:00
soc.c base: soc: populate machine name in soc_device_register if empty 2023-03-29 12:21:23 +02:00
swnode.c driver core: make kobj_type structures constant 2023-02-08 13:34:30 +01:00
syscore.c syscore: Use pm_pr_dbg() for syscore_{suspend,resume}() 2020-09-08 13:32:06 +02:00
topology.c drivers/base: fix userspace break from using bin_attributes for cpumap and cpulist 2022-07-15 17:36:33 +02:00
trace.c devres: Enable trace events 2021-06-15 17:14:36 +02:00
trace.h devres: Enable trace events 2021-06-15 17:14:36 +02:00
transport_class.c drivers: base: transport_class: fix resource leak when transport_add_device() fails 2023-01-20 14:22:53 +01:00