diff options
| author | Igor Murzov <intergalactic.anonymous@gmail.com> | 2012-03-30 21:32:09 +0400 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2012-03-30 23:47:52 +0400 |
| commit | b60e7f6166857c76871977794fa266b02da1f394 (patch) | |
| tree | e101d6548b7a841ffca1e20fd10cf54f4d80bace | |
| parent | ea9f8856bd6d4ed45885b06a338f7362cd6c60e5 (diff) | |
| download | linux-b60e7f6166857c76871977794fa266b02da1f394.tar.xz | |
ACPI video: Don't start video device until its associated input device has been allocated
Quoth Dmitry Torokhov:
In addition to bus notifier we do install device notifier explicitly
so it might fire up early. The easiest fox would be to move
acpi_video_bus_start_devices() after input_allocate_device() but
before input_register_device() - unregistered input devices can handle
input_event() calls just fine.
May fix crashes reported in:
https://bugzilla.kernel.org/show_bug.cgi?id=40672
Signed-off-by: Igor Murzov <e-mail@date.by>
Signed-off-by: Len Brown <len.brown@intel.com>
| -rw-r--r-- | drivers/acpi/video.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c index 462486b9f9b2..9577b6fa2650 100644 --- a/drivers/acpi/video.c +++ b/drivers/acpi/video.c @@ -1658,16 +1658,17 @@ static int acpi_video_bus_add(struct acpi_device *device) error = acpi_video_bus_get_devices(video, device); if (error) goto err_free_video; - error = acpi_video_bus_start_devices(video); - if (error) - goto err_put_video; video->input = input = input_allocate_device(); if (!input) { error = -ENOMEM; - goto err_stop_video; + goto err_put_video; } + error = acpi_video_bus_start_devices(video); + if (error) + goto err_free_input_dev; + snprintf(video->phys, sizeof(video->phys), "%s/video/input0", acpi_device_hid(video->device)); @@ -1688,7 +1689,7 @@ static int acpi_video_bus_add(struct acpi_device *device) error = input_register_device(input); if (error) - goto err_free_input_dev; + goto err_stop_video; printk(KERN_INFO PREFIX "%s [%s] (multi-head: %s rom: %s post: %s)\n", ACPI_VIDEO_DEVICE_NAME, acpi_device_bid(device), @@ -1706,10 +1707,10 @@ static int acpi_video_bus_add(struct acpi_device *device) err_unregister_input_dev: input_unregister_device(input); - err_free_input_dev: - input_free_device(input); err_stop_video: acpi_video_bus_stop_devices(video); + err_free_input_dev: + input_free_device(input); err_put_video: acpi_video_bus_put_devices(video); kfree(video->attached_array); |