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| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2023-04-14 16:00:48 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-05-11 23:03:16 +0900 |
| commit | 0985838a9c87f4870ea9135df9d339fc5846994c (patch) | |
| tree | b3d535fdb46918fa0d85f26ca5b7f3bdf362207f /drivers/acpi | |
| parent | 290e26ec0d012b70ab7e4a9a59924682d0ed4ce8 (diff) | |
| download | linux-0985838a9c87f4870ea9135df9d339fc5846994c.tar.gz | |
ACPI: bus: Ensure that notify handlers are not running after removal
[ Upstream commit faae443738c6f0dac9b0d3d11d108f6911a989a9 ]
Currently, acpi_device_remove_notify_handler() may return while the
notify handler being removed is still running which may allow the
module holding that handler to be torn down prematurely.
Address this issue by making acpi_device_remove_notify_handler() wait
for the handling of all the ACPI events in progress to complete before
returning.
Fixes: 5894b0c46e49 ("ACPI / scan: Move bus operations and notification routines to bus.c")
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/bus.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c index 3b6146b1e25c..a16b7de73d16 100644 --- a/drivers/acpi/bus.c +++ b/drivers/acpi/bus.c @@ -586,6 +586,7 @@ static void acpi_device_remove_notify_handler(struct acpi_device *device, acpi_remove_notify_handler(device->handle, type, acpi_notify_device); } + acpi_os_wait_events_complete(); } /* Handle events targeting \_SB device (at present only graceful shutdown) */ |