From: Chris Wilson Date: Mon, 3 Oct 2016 12:45:15 +0000 (+0100) Subject: drm/i915: Unalias obj->phys_handle and obj->userptr X-Git-Tag: firefly_0821_release~176^2~4^2~21^2~39 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=89758797f1c267e1e0fbc87c56dce2b13d673d0b;p=firefly-linux-kernel-4.4.55.git drm/i915: Unalias obj->phys_handle and obj->userptr commit ca5732c53bf66ad755284786897e0dd10330de87 upstream. We use obj->phys_handle to choose the pread/pwrite path, but as obj->phys_handle is a union with obj->userptr, we then mistakenly use the phys_handle path for userptr objects within pread/pwrite. Testcase: igt/gem_userptr_blits/forbidden-operations Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=97519 Signed-off-by: Chris Wilson Reviewed-by: Joonas Lahtinen Link: http://patchwork.freedesktop.org/patch/msgid/20161003124516.12388-2-chris@chris-wilson.co.uk (cherry picked from commit 5f12b80a0b42da253691ca03828033014bb786eb) Signed-off-by: Jani Nikula Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index d400d6773bbb..fb9f647bb5cd 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -2150,21 +2150,19 @@ struct drm_i915_gem_object { /** Record of address bit 17 of each page at last unbind. */ unsigned long *bit_17; - union { - /** for phy allocated objects */ - struct drm_dma_handle *phys_handle; - - struct i915_gem_userptr { - uintptr_t ptr; - unsigned read_only :1; - unsigned workers :4; + struct i915_gem_userptr { + uintptr_t ptr; + unsigned read_only :1; + unsigned workers :4; #define I915_GEM_USERPTR_MAX_WORKERS 15 - struct i915_mm_struct *mm; - struct i915_mmu_object *mmu_object; - struct work_struct *work; - } userptr; - }; + struct i915_mm_struct *mm; + struct i915_mmu_object *mmu_object; + struct work_struct *work; + } userptr; + + /** for phys allocated objects */ + struct drm_dma_handle *phys_handle; }; #define to_intel_bo(x) container_of(x, struct drm_i915_gem_object, base)