From c1a1cdc159e211f045290f61ac95092e9708f5bc Mon Sep 17 00:00:00 2001 From: Jesse Barnes Date: Wed, 16 Sep 2009 15:05:00 -0700 Subject: [PATCH] drm/i915: fix startup hang on some non-mobile platforms Due to a bogus FBC support check and failing to check for FBC support in the right places, mode setting on non-mobile platforms could fail and hang in the FBC disable routine. Fix it up. This fix highlights the need for cleanups in this area (function pointers and better feature support checks). Patches for that to follow. Tested-by: Kenny Graunke Signed-off-by: Jesse Barnes --- drivers/gpu/drm/i915/i915_drv.h | 2 +- drivers/gpu/drm/i915/intel_display.c | 3 +++ 2 files changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index d814b69..a9c6715 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -941,7 +941,7 @@ extern int i915_wait_ring(struct drm_device * dev, int n, const char *caller); #define HAS_FW_BLC(dev) (IS_I9XX(dev) || IS_G4X(dev) || IS_IGDNG(dev)) #define HAS_PIPE_CXSR(dev) (IS_G4X(dev) || IS_IGDNG(dev)) -#define I915_HAS_FBC(dev) (IS_I9XX(dev) || IS_I965G(dev)) +#define I915_HAS_FBC(dev) (IS_MOBILE(dev) && (IS_I9XX(dev) || IS_I965G(dev))) #define PRIMARY_RINGBUFFER_SIZE (128*1024) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 42cd68d..f9fe989 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -1005,6 +1005,9 @@ void i8xx_disable_fbc(struct drm_device *dev) struct drm_i915_private *dev_priv = dev->dev_private; u32 fbc_ctl; + if (!I915_HAS_FBC(dev)) + return; + /* Disable compression */ fbc_ctl = I915_READ(FBC_CONTROL); fbc_ctl &= ~FBC_CTL_EN; -- 2.7.4