At least on i965g and i965gm, performing a device reset clobbers the IER
resulting in loss of interrupts thereafter. So, run the irq_postinstall
hook to restore them.
Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk>
Cc: Ville Syrjälä <ville.syrj...@linux.intel.com>
---
drivers/gpu/drm/i915/i915_reset.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_reset.c
b/drivers/gpu/drm/i915/i915_reset.c
index 5a067a4b3d5d..c5bb4a67a81b 100644
--- a/drivers/gpu/drm/i915/i915_reset.c
+++ b/drivers/gpu/drm/i915/i915_reset.c
@@ -994,10 +994,12 @@ void i915_reset(struct drm_i915_private *i915,
goto error;
}
+ intel_irq_uninstall(i915);
if (do_reset(i915, stalled_mask)) {
dev_err(i915->drm.dev, "Failed to reset chip\n");
goto taint;
}
+ intel_irq_install(i915);
intel_overlay_reset(i915);
--
2.20.1
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