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authorLinus Torvalds <torvalds@linux-foundation.org>2017-09-29 19:35:41 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2017-09-29 19:35:41 -0700
commit74d83ec2b73457449918c315e40622c03a3659a6 (patch)
tree9d59cf2b19b21022b81d3741a4de2cb87869dd42
parent95dcc4dc38e407bb2af9c7c45c9bc4c995eefeeb (diff)
parentce7c47d60bda6c7f09ccf16e978d971c8fa16ff0 (diff)
downloadlinux-74d83ec2b73457449918c315e40622c03a3659a6.tar.bz2
Merge tag 'platform-drivers-x86-v4.14-2' of git://git.infradead.org/linux-platform-drivers-x86
Pull x86 platform drivers fix from Darren Hart: "Newly discovered species of fujitsu laptops break some assumptions about ACPI device pairings. fujitsu-laptop: Don't oops when FUJ02E3 is not present" * tag 'platform-drivers-x86-v4.14-2' of git://git.infradead.org/linux-platform-drivers-x86: platform/x86: fujitsu-laptop: Don't oops when FUJ02E3 is not presnt
-rw-r--r--drivers/platform/x86/fujitsu-laptop.c10
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/platform/x86/fujitsu-laptop.c b/drivers/platform/x86/fujitsu-laptop.c
index 85de30f93a9c..56a8195096a2 100644
--- a/drivers/platform/x86/fujitsu-laptop.c
+++ b/drivers/platform/x86/fujitsu-laptop.c
@@ -254,10 +254,12 @@ static int bl_update_status(struct backlight_device *b)
{
struct acpi_device *device = bl_get_data(b);
- if (b->props.power == FB_BLANK_POWERDOWN)
- call_fext_func(fext, FUNC_BACKLIGHT, 0x1, 0x4, 0x3);
- else
- call_fext_func(fext, FUNC_BACKLIGHT, 0x1, 0x4, 0x0);
+ if (fext) {
+ if (b->props.power == FB_BLANK_POWERDOWN)
+ call_fext_func(fext, FUNC_BACKLIGHT, 0x1, 0x4, 0x3);
+ else
+ call_fext_func(fext, FUNC_BACKLIGHT, 0x1, 0x4, 0x0);
+ }
return set_lcd_level(device, b->props.brightness);
}