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drm/i915: Shut down PCH interrupts during irq_uninstall

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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>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Keith Packard 2011-09-20 10:12:44 -07:00
parent 7fe0b973fa
commit 192aac1f19
1 changed files with 4 additions and 0 deletions
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4
drivers/gpu/drm/i915/i915_irq.c
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@ -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)