[PATCH 11/15] ACPI video: use after input_unregister_device()

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

From: Dan Carpenter <dan.carpenter@xxxxxxxxxx>

We can't use "input" anymore after calling input_unregister_device().
The call to input_free_device() is a double free.  The normal way to
deal with this is to make input_register_device() the last function
called in the function.

Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Acked-by: Dmitry Torokhov <dtor@xxxxxxx>
Signed-off-by: Len Brown <len.brown@xxxxxxxxx>
 drivers/acpi/video.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index 609262d..a576575 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -1687,10 +1687,6 @@ static int acpi_video_bus_add(struct acpi_device *device)
 	set_bit(KEY_BRIGHTNESS_ZERO, input->keybit);
 	set_bit(KEY_DISPLAY_OFF, input->keybit);
-	error = input_register_device(input);
-	if (error)
-		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),
 	       video->flags.multihead ? "yes" : "no",
@@ -1701,12 +1697,16 @@ static int acpi_video_bus_add(struct acpi_device *device)
 	video->pm_nb.priority = 0;
 	error = register_pm_notifier(&video->pm_nb);
 	if (error)
-		goto err_unregister_input_dev;
+		goto err_stop_video;
+	error = input_register_device(input);
+	if (error)
+		goto err_unregister_pm_notifier;
 	return 0;
- err_unregister_input_dev:
-	input_unregister_device(input);
+ err_unregister_pm_notifier:
+	unregister_pm_notifier(&video->pm_nb);

To unsubscribe from this list: send the line "unsubscribe linux-acpi" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at

[Site Home]     [Linux IBM ACPI]     [Linux Power Management]     [Linux Kernel]     [Linux Laptop]     [Kernel Newbies]     [Share Photos]     [Security]     [Netfilter]     [Bugtraq]     [Rubini]     [Photo]     [Yosemite Photos]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Samba]     [Video 4 Linux]     [Device Mapper]     [Linux Resources]

  Powered by Linux