diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_irq.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_irq.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index a31c9d5..ae17c4b 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -273,10 +273,15 @@ irqreturn_t ironlake_irq_handler(struct drm_device *dev) { drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; int ret = IRQ_NONE; - u32 de_iir, gt_iir, pch_iir; + u32 de_iir, gt_iir, de_ier, pch_iir; u32 new_de_iir, new_gt_iir, new_pch_iir; struct drm_i915_master_private *master_priv; + /* disable master interrupt before clearing iir */ + de_ier = I915_READ(DEIER); + I915_WRITE(DEIER, de_ier & ~DE_MASTER_IRQ_CONTROL); + (void)I915_READ(DEIER); + de_iir = I915_READ(DEIIR); gt_iir = I915_READ(GTIIR); pch_iir = I915_READ(SDEIIR); @@ -324,6 +329,9 @@ irqreturn_t ironlake_irq_handler(struct drm_device *dev) pch_iir = new_pch_iir; } + I915_WRITE(DEIER, de_ier); + (void)I915_READ(DEIER); + return ret; } |
