[Intel-gfx] [PATCH 2/4] drm/i915: protect backlight registers and data with a spinlock

[Daniel Vetter]

On Fri, Apr 12, 2013 at 03:18:37PM +0300, Jani Nikula wrote:
> Backlight data and registers are fiddled through LVDS/eDP modeset
> enable/disable hooks, backlight sysfs files, asle interrupts, and register
> save/restore. Protect the backlight related registers and driver private
> fields using a spinlock.
> 
> The locking in register save/restore covers a little more than is strictly
> necessary, including non-modeset case, for simplicity.
> 
> v2: Cover register access, save/restore, i915_read_blc_pwm_ctl() and code
>     paths leading there.
> 
> Signed-off-by: Jani Nikula <jani.nikula at intel.com>

Merged the first two patches here for next, I guess we can fix up any
other issues here separately.

Thanks, Daniel
---- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch