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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-09-29 19:35:41 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-09-29 19:35:41 -0700 |
| commit | 74d83ec2b73457449918c315e40622c03a3659a6 (patch) | |
| tree | 9d59cf2b19b21022b81d3741a4de2cb87869dd42 | |
| parent | 95dcc4dc38e407bb2af9c7c45c9bc4c995eefeeb (diff) | |
| parent | ce7c47d60bda6c7f09ccf16e978d971c8fa16ff0 (diff) | |
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.c | 10 |
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); } |