• Daniel Vetter's avatar
    drm/gma500: add locking to fixed panel edid probing · c46145ae
    Daniel Vetter authored
    With the recent addition of locking checks in
    
    commit 62ff94a5
    Author:     Daniel Vetter <daniel.vetter@ffwll.ch>
    AuthorDate: Thu Jan 23 22:18:47 2014 +0100
    
        drm/crtc-helper: remove LOCKING from kerneldoc
    
    drm_add_edid_modes started to WARN about the mode_config.mutex not
    being held in the lvds and dp initialization code.
    
    Now since this is init code locking is fairly redudant if it wouldn't
    be for the drm core registering sysfs files a bit early. And the
    locking WARNINGs nicely enforce that indeed all access to the mode
    lists are properly protected. And a full audit shows that only i915
    and gma500 touch the modes lists at init time.
    
    Hence I've opted to wrap up this entire mode detection sequence for
    fixed panels with the mode_config mutex for both lvds and edp outputs.
    
    Cc: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
    Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
    Acked-by: default avatarPatrik Jakobsson <patrik.r.jakobsson@gmail.com>
    Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
    c46145ae
oaktrail_lvds.c 12.6 KB