From mboxrd@z Thu Jan 1 00:00:00 1970 From: Keith Packard Subject: [PATCH 02/21] drm/i915: Shut down PCH interrupts during irq_uninstall Date: Thu, 29 Sep 2011 18:09:34 -0700 Message-ID: <1317344993-24945-3-git-send-email-keithp@keithp.com> References: <20110923085243.6e4b7b4c@jbarnes-x220> <1317344993-24945-1-git-send-email-keithp@keithp.com> Return-path: In-Reply-To: <1317344993-24945-1-git-send-email-keithp@keithp.com> Sender: linux-kernel-owner@vger.kernel.org To: Dave Airlie Cc: linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, Keith Packard List-Id: dri-devel@lists.freedesktop.org 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 --- 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