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| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2023-04-14 16:00:48 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2023-04-18 17:40:45 +0200 |
| commit | faae443738c6f0dac9b0d3d11d108f6911a989a9 (patch) | |
| tree | 71f1f76c24b65ddbb7b988411e87ecfad07c4a4a /drivers/acpi | |
| parent | 6d572d39b21fdd7411fe855a4fad479683ad99c5 (diff) | |
| download | linux-faae443738c6f0dac9b0d3d11d108f6911a989a9.tar.gz linux-faae443738c6f0dac9b0d3d11d108f6911a989a9.tar.bz2 linux-faae443738c6f0dac9b0d3d11d108f6911a989a9.zip | |
ACPI: bus: Ensure that notify handlers are not running after removal
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>
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 2f2517d6f9ef..c32a06bcac0c 100644 --- a/drivers/acpi/bus.c +++ b/drivers/acpi/bus.c @@ -589,6 +589,7 @@ 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) */ |