From: Daniel Vetter Date: Thu, 26 Jan 2012 10:41:11 +0000 (+0100) Subject: drm/i915: fix up locking inconsistency around gem_do_init X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=d3ae08109d628d26615d7f7f4d8d53cdd8d71fd0;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git drm/i915: fix up locking inconsistency around gem_do_init The locking in our setup and teardown paths is rather arbitrary, but generally we try to protect gem stuff with dev->struct_mutex. Further, the ums/gem ioctl to setup gem _does_ take the look. So fix up this benign inconsistency. Notice while reading through code. v2: Rebased on top of the ppgtt code. Reviewed-by: Chris Wilson Signed-Off-by: Daniel Vetter --- diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c index 38dfcf91f400..39728fbb3f07 100644 --- a/drivers/gpu/drm/i915/i915_dma.c +++ b/drivers/gpu/drm/i915/i915_dma.c @@ -1196,6 +1196,7 @@ static int i915_load_gem_init(struct drm_device *dev) /* Basic memrange allocator for stolen space */ drm_mm_init(&dev_priv->mm.stolen, 0, prealloc_size); + mutex_lock(&dev->struct_mutex); if (i915_enable_ppgtt && HAS_ALIASING_PPGTT(dev)) { /* PPGTT pdes are stolen from global gtt ptes, so shrink the * aperture accordingly when using aliasing ppgtt. */ @@ -1222,7 +1223,6 @@ static int i915_load_gem_init(struct drm_device *dev) i915_gem_do_init(dev, 0, mappable_size, gtt_size - PAGE_SIZE); } - mutex_lock(&dev->struct_mutex); ret = i915_gem_init_hw(dev); mutex_unlock(&dev->struct_mutex); if (ret) {