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Diffstat (limited to 'drivers/gpu/drm/i915/i915_utils.h')
-rw-r--r--drivers/gpu/drm/i915/i915_utils.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_utils.h b/drivers/gpu/drm/i915/i915_utils.h
index f02f52ab5070..5259edacde38 100644
--- a/drivers/gpu/drm/i915/i915_utils.h
+++ b/drivers/gpu/drm/i915/i915_utils.h
@@ -201,6 +201,11 @@ __check_struct_size(size_t base, size_t arr, size_t count, size_t *size)
__T; \
})
+static __always_inline ptrdiff_t ptrdiff(const void *a, const void *b)
+{
+ return a - b;
+}
+
/*
* container_of_user: Extract the superclass from a pointer to a member.
*