[Intel-gfx] [PATCH 10/24] drm/i915: remove SERR_INT clearing in the postinstall hook

[Daniel Vetter]

The preinstallhook is supposed to clear all interrupts. Doing it
again in the postinstall hook has the risk that we're eating
an interrupt source from the handler. If that happens too often,
the kernel will disable our interrupt handler.

Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>
---
 drivers/gpu/drm/i915/i915_irq.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index c2b4b09..685ad84 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -2635,8 +2635,6 @@ static void ibx_irq_postinstall(struct drm_device *dev)
 		       SDE_TRANSA_FIFO_UNDER | SDE_POISON;
 	} else {
 		mask = SDE_GMBUS_CPT | SDE_AUX_MASK_CPT | SDE_ERROR_CPT;
-
-		I915_WRITE(SERR_INT, I915_READ(SERR_INT));
 	}
 
 	I915_WRITE(SDEIIR, I915_READ(SDEIIR));
-- 
1.8.1.4