[ACPI] acpi_remove_notify_handler() on video driver unload
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>
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@ -1665,6 +1665,7 @@ static int
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acpi_video_bus_put_one_device(
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struct acpi_video_device *device)
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{
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acpi_status status;
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struct acpi_video_bus *video;
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ACPI_FUNCTION_TRACE("acpi_video_bus_put_one_device");
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@ -1679,6 +1680,12 @@ acpi_video_bus_put_one_device(
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up(&video->sem);
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acpi_video_device_remove_fs(device->dev);
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status = acpi_remove_notify_handler(device->handle,
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ACPI_DEVICE_NOTIFY, acpi_video_device_notify);
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if (ACPI_FAILURE(status))
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ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
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"Error removing notify handler\n"));
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return_VALUE(0);
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}
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