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| author | Armin Wolf <W_Armin@gmx.de> | 2023-03-24 23:26:27 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-05-24 19:32:35 +0300 |
| commit | 86a159fd5bdb01ec34b160cfda1a313b616d9302 (patch) | |
| tree | e10527825963ef0852d697cb779247ab29fd82f3 /drivers/acpi | |
| parent | a8267bc8de736cae927165191b52fbc20d101dd1 (diff) | |
| download | linux-86a159fd5bdb01ec34b160cfda1a313b616d9302.tar.xz | |
ACPI: EC: Fix oops when removing custom query handlers
[ Upstream commit e5b492c6bb900fcf9722e05f4a10924410e170c1 ]
When removing custom query handlers, the handler might still
be used inside the EC query workqueue, causing a kernel oops
if the module holding the callback function was already unloaded.
Fix this by flushing the EC query workqueue when removing
custom query handlers.
Tested on a Acer Travelmate 4002WLMi
Signed-off-by: Armin Wolf <W_Armin@gmx.de>
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/ec.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c index 9751b84c1b22..ee4c812c8f6c 100644 --- a/drivers/acpi/ec.c +++ b/drivers/acpi/ec.c @@ -1121,6 +1121,7 @@ static void acpi_ec_remove_query_handlers(struct acpi_ec *ec, void acpi_ec_remove_query_handler(struct acpi_ec *ec, u8 query_bit) { acpi_ec_remove_query_handlers(ec, false, query_bit); + flush_workqueue(ec_query_wq); } EXPORT_SYMBOL_GPL(acpi_ec_remove_query_handler); |