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drm/i915: Unalias obj->phys_handle and obj->userptr

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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 <chris@chris-wilson.co.uk>
Cc: stable@vger.kernel.org
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161003124516.12388-2-chris@chris-wilson.co.uk
(cherry picked from commit 5f12b80a0b)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
This commit is contained in:
Chris Wilson 2016-10-03 13:45:15 +01:00 committed by Jani Nikula
parent f856f847b2
commit ca5732c53b
1 changed files with 11 additions and 13 deletions
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24
drivers/gpu/drm/i915/i915_drv.h
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@ -2276,21 +2276,19 @@ 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;
};
static inline struct drm_i915_gem_object *