On Fri, Jun 25, 2021 at 10:47:40AM +0200, Thomas Zimmermann wrote: > Remove all references to DRM's IRQ midlayer. > > The code in xcs_resume() probably didn't work as intended. It uses > struct drm_device.irq, which is allocated to 0, but never initialized > by i915 to the device's interrupt number. > > Signed-off-by: Thomas Zimmermann <tzimmerm...@suse.de> > Fixes: 536f77b1caa0 ("drm/i915/gt: Call stop_ring() from ring resume, again") > Cc: Chris Wilson <ch...@chris-wilson.co.uk> > Cc: Mika Kuoppala <mika.kuopp...@linux.intel.com> > Cc: Daniel Vetter <daniel.vet...@ffwll.ch> > Cc: Rodrigo Vivi <rodrigo.v...@intel.com> > Cc: Joonas Lahtinen <joonas.lahti...@linux.intel.com> > Cc: Maarten Lankhorst <maarten.lankho...@linux.intel.com> > Cc: Lucas De Marchi <lucas.demar...@intel.com> > --- > drivers/gpu/drm/i915/gt/intel_ring_submission.c | 3 ++- > drivers/gpu/drm/i915/i915_drv.c | 1 - > drivers/gpu/drm/i915/i915_irq.c | 1 - > 3 files changed, 2 insertions(+), 3 deletions(-) > > diff --git a/drivers/gpu/drm/i915/gt/intel_ring_submission.c > b/drivers/gpu/drm/i915/gt/intel_ring_submission.c > index 5d42a12ef3d6..d893aaaed74f 100644 > --- a/drivers/gpu/drm/i915/gt/intel_ring_submission.c > +++ b/drivers/gpu/drm/i915/gt/intel_ring_submission.c > @@ -180,12 +180,13 @@ static bool stop_ring(struct intel_engine_cs *engine) > static int xcs_resume(struct intel_engine_cs *engine) > { > struct intel_ring *ring = engine->legacy.ring; > + struct pci_dev *pdev = to_pci_dev(engine->i915->drm.dev); > > ENGINE_TRACE(engine, "ring:{HEAD:%04x, TAIL:%04x}\n", > ring->head, ring->tail); > > /* Double check the ring is empty & disabled before we resume */ > - synchronize_hardirq(engine->i915->drm.irq); > + synchronize_hardirq(pdev->irq);
We have intel_synchronize_irq() to hide all these mundane details. Might want to add a matching intel_synchronize_hardirq(). > if (!stop_ring(engine)) > goto err; > > diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c > index 850b499c71c8..73de45472f60 100644 > --- a/drivers/gpu/drm/i915/i915_drv.c > +++ b/drivers/gpu/drm/i915/i915_drv.c > @@ -42,7 +42,6 @@ > #include <drm/drm_aperture.h> > #include <drm/drm_atomic_helper.h> > #include <drm/drm_ioctl.h> > -#include <drm/drm_irq.h> > #include <drm/drm_managed.h> > #include <drm/drm_probe_helper.h> > > diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c > index a11bdb667241..eef616d96f12 100644 > --- a/drivers/gpu/drm/i915/i915_irq.c > +++ b/drivers/gpu/drm/i915/i915_irq.c > @@ -33,7 +33,6 @@ > #include <linux/sysrq.h> > > #include <drm/drm_drv.h> > -#include <drm/drm_irq.h> > > #include "display/intel_de.h" > #include "display/intel_display_types.h" > > base-commit: 8c1323b422f8473421682ba783b5949ddd89a3f4 > prerequisite-patch-id: c2b2f08f0eccc9f5df0c0da49fa1d36267deb11d > prerequisite-patch-id: c67e5d886a47b7d0266d81100837557fda34cb24 > -- > 2.32.0 -- Ville Syrjälä Intel