• Daniel Vetter's avatar
    drm/i915: enable irqs earlier when resuming · 15239099
    Daniel Vetter authored
    We need it to restore the ilk rc6 context, since the gpu wait no
    requires interrupts. But in general having interrupts around should
    help in code sanity, since more and more stuff is interrupt driven.
    
    This regression has been introduced in
    
    commit 3e960501
    Author: Chris Wilson <chris@chris-wilson.co.uk>
    Date:   Tue Nov 27 16:22:54 2012 +0000
    
        drm/i915: Rearrange code to only have a single method for waiting upon the ring
    
    Like in the driver load code we need to make sure that hotplug
    interrupts don't cause havoc with our modeset state, hence block them
    with the existing infrastructure. Again we ignore races where we might
    loose hotplug interrupts ...
    
    Note that the driver load part of the regression has already been
    fixed in
    
    commit 52d7eced
    Author: Daniel Vetter <daniel.vetter@ffwll.ch>
    Date:   Sat Dec 1 21:03:22 2012 +0100
    
        drm/i915: reorder setup sequence to have irqs for output setup
    
    v2: Add a note to the commit message about which patch fixed the
    driver load part of the regression. Stable kernels need to backport
    both patches.
    
    Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=54691
    Cc: stable@vger.kernel.org (for 3.8 only, plese backport
    			    52d7eced
    
     first)
    Cc: Chris Wilson <chris@chris-wilson.co.uk>
    Cc: Mika Kuoppala <mika.kuoppala@intel.com>
    Reported-and-Tested-by: default avatarIlya Tumaykin <itumaykin@gmail.com>
    Reviewed-by: Chris wilson <chris@chris-wilson.co.uk> (v1)
    Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
    15239099