> -----Original Message----- > From: Intel-gfx [mailto:intel-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx] On Behalf Of > Chris Wilson > Sent: Wednesday, April 09, 2014 9:20 AM > To: intel-gfx@xxxxxxxxxxxxxxxxxxxxx > Subject: [PATCH 4/6] drm/i915: Mark device as wedged if we fail to > resume > > During module load, if we fail to initialise the rings, we abort the load reporting > EIO. However during resume, even though we report EIO as we fail to > reinitialize the ringbuffers, the resume continues and the device is restored - > albeit in a non-functional state. As we cannot execute any commands on the > GPU, it is effectively wedged, mark it so. > > As we now preserve the ringbuffers across resume, this should prevent UXA > from falling into the trap of repeatedly sending invalid batchbuffers and > dropping all further rendering into /dev/null. > > Reported-and-tested-by: Jiri Kosina <jkosina@xxxxxxx> > References: https://bugs.freedesktop.org/show_bug.cgi?id=76554 > Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> > --- > drivers/gpu/drm/i915/i915_drv.c | 8 +++++--- > 1 file changed, 5 insertions(+), 3 deletions(-) > > diff --git a/drivers/gpu/drm/i915/i915_drv.c > b/drivers/gpu/drm/i915/i915_drv.c index 5d8250f7145d..629f8164a547 100644 > --- a/drivers/gpu/drm/i915/i915_drv.c > +++ b/drivers/gpu/drm/i915/i915_drv.c > @@ -569,8 +569,10 @@ static int __i915_drm_thaw(struct drm_device *dev, > bool restore_gtt_mappings) > drm_mode_config_reset(dev); > > mutex_lock(&dev->struct_mutex); > - > - error = i915_gem_init_hw(dev); > + if (i915_gem_init_hw(dev)) { > + DRM_ERROR("failed to re-initialize GPU, declaring > wedged!\n"); The "int error = 0;" is not needed anymore. Other than that: Reviewed-by: Oscar Mateo <oscar.mateo@xxxxxxxxx> > + atomic_set_mask(I915_WEDGED, &dev_priv- > >gpu_error.reset_counter); > + } > mutex_unlock(&dev->struct_mutex); > > /* We need working interrupts for modeset enabling ... */ @@ > -613,7 +615,7 @@ static int __i915_drm_thaw(struct drm_device *dev, bool > restore_gtt_mappings) > mutex_unlock(&dev_priv->modeset_restore_lock); > > intel_runtime_pm_put(dev_priv); > - return error; > + return 0; > } > > static int i915_drm_thaw(struct drm_device *dev) > -- > 1.9.1 > > _______________________________________________ > Intel-gfx mailing list > Intel-gfx@xxxxxxxxxxxxxxxxxxxxx > http://lists.freedesktop.org/mailman/listinfo/intel-gfx _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
