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[ACPI] acpi_remove_notify_handler() on video driver unload

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The video driver doesn't properly remove all the notify handlers
on module unload.  This has a side effect of subdevices failing
to register on module reload, but sudden death looms if the
handlers trigger after the module is unloaded.

Signed-off-by: Karol Kozimor <sziwan@hell.org.pl>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Karol Kozimor 2005-07-30 04:18:00 -04:00 committed by Len Brown
parent e92310a930
commit 031ec77bf6
1 changed files with 7 additions and 0 deletions
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7
drivers/acpi/video.c
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@ -1665,6 +1665,7 @@ static int
acpi_video_bus_put_one_device(
struct acpi_video_device *device)
{
acpi_status status;
struct acpi_video_bus *video;
ACPI_FUNCTION_TRACE("acpi_video_bus_put_one_device");
@ -1679,6 +1680,12 @@ acpi_video_bus_put_one_device(
up(&video->sem);
acpi_video_device_remove_fs(device->dev);
status = acpi_remove_notify_handler(device->handle,
ACPI_DEVICE_NOTIFY, acpi_video_device_notify);
if (ACPI_FAILURE(status))
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"Error removing notify handler\n"));
return_VALUE(0);
}