diff options
| author | Yu Luming <luming.yu@gmail.com> | 2005-11-19 15:53:56 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2005-12-26 16:08:56 -0800 |
| commit | 6968ecfca8822055cfe121214c0786e4eecc038e (patch) | |
| tree | bb6f3c6d655c0eb6576a75ed5f3469136c21c9fa | |
| parent | b72c1d0c14634506a2ff740033ab1bda3c3d5d7f (diff) | |
[PATCH] apci: fix NULL deref in video/lcd/brightness
Fix Null pointer deref in video/lcd/brightness
http://bugzilla.kernel.org/show_bug.cgi?id=5571
Signed-off-by: Yu Luming <luming.yu@gmail.com>
Cc: "Brown, Len" <len.brown@intel.com>
Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Chris Wright <chrisw@redhat.com>
| -rw-r--r-- | drivers/acpi/video.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c index e383d6109ae1..00fe1cd6505a 100644 --- a/drivers/acpi/video.c +++ b/drivers/acpi/video.c @@ -813,7 +813,7 @@ acpi_video_device_write_brightness(struct file *file, ACPI_FUNCTION_TRACE("acpi_video_device_write_brightness"); - if (!dev || count + 1 > sizeof str) + if (!dev || !dev->brightness || count + 1 > sizeof str) return_VALUE(-EINVAL); if (copy_from_user(str, buffer, count)) |