On Fri, Jul 11, 2014 at 10:16:30PM +0000, Scot Doyle wrote:
> commit c675949ec58ca50d5a3ae3c757892f1560f6e896
> drm/i915: do not setup backlight if not available according to VBT
>
> caused a regression on the HP Chromebook 14 (with Celeron 2955U CPU),
> which has a misconfigured VBT. Apply quirk to ignore the VBT backlight
> presence check during backlight setup.
>
> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=79813
> Signed-off-by: Scot Doyle <lkm...@scotdoyle.com>
> Tested-by: Stefan Nagy <pub...@stefan-nagy.at>
> Cc: Jani Nikula <jani.nik...@intel.com>
> Cc: Daniel Vetter <daniel.vet...@ffwll.ch>
Picked up for -fixes, thanks for the patch.
-Daniel
> ---
> drivers/gpu/drm/i915/intel_display.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/intel_display.c
> b/drivers/gpu/drm/i915/intel_display.c
> index fe6f1db..5d70f02 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -12440,6 +12440,9 @@ static struct intel_quirk intel_quirks[] = {
>
> /* Toshiba CB35 Chromebook (Celeron 2955U) */
> { 0x0a06, 0x1179, 0x0a88, quirk_backlight_present },
> +
> + /* HP Chromebook 14 (Celeron 2955U) */
> + { 0x0a06, 0x103c, 0x21ed, quirk_backlight_present },
> };
>
> static void intel_init_quirks(struct drm_device *dev)
> --
> 1.7.10.4
>
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--
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
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