mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2024-11-22 04:38:03 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

ACPI: x86: Add adev NULL check to acpi_quirk_skip_serdev_enumeration()

Browse Source 
acpi_dev_hid_match() does not check for adev == NULL, dereferencing
it unconditional.

Add a check for adev being NULL before calling acpi_dev_hid_match().

At the moment acpi_quirk_skip_serdev_enumeration() is never called with
a controller_parent without an ACPI companion, but better safe than sorry.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://patch.msgid.link/20241109220028.83047-1-hdegoede@redhat.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Hans de Goede 2024-11-09 23:00:28 +01:00 committed by Rafael J. Wysocki
parent 7f261203d7
commit 4a49194f58
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/acpi/x86/utils.c
View File

@ -536,7 +536,7 @@ int acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *s
* Set skip to true so that the tty core creates a serdev ctrl device.
* The backlight driver will manually create the serdev client device.
*/
if (acpi_dev_hid_match(adev, "DELL0501")) {
if (adev && acpi_dev_hid_match(adev, "DELL0501")) {
*skip = true;
/*
* Create a platform dev for dell-uart-backlight to bind to.