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Subject[PATCH 02/21] drm/i915: Shut down PCH interrupts during irq_uninstall
Date
This masks out all interrupts and ack's any pending ones at IRQ
uninstall time to make sure we don't receive any unexpected interrupts
later on.

Signed-off-by: Keith Packard <keithp@keithp.com>
---
drivers/gpu/drm/i915/i915_irq.c | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index c22823b..adeab2a 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -2044,6 +2044,10 @@ static void ironlake_irq_uninstall(struct drm_device *dev)
I915_WRITE(GTIMR, 0xffffffff);
I915_WRITE(GTIER, 0x0);
I915_WRITE(GTIIR, I915_READ(GTIIR));
+
+ I915_WRITE(SDEIMR, 0xffffffff);
+ I915_WRITE(SDEIER, 0x0);
+ I915_WRITE(SDEIIR, I915_READ(SDEIIR));
}

static void i915_driver_irq_uninstall(struct drm_device * dev)
--
1.7.6.3


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