X-Git-Url: http://git.monstr.eu/?a=blobdiff_plain;f=drivers%2Fgpu%2Fdrm%2Fi915%2Fi915_utils.h;h=4920ff9aba62abcbc8f5ee61a0c485b1b9094eda;hb=f1c4d157ab9b13c1228f3b8ad7747126785460d0;hp=2987219a6300b922f0e4358d505aac6ce9cdd7e7;hpb=1ec4013bab89058dcc594dfe7b5a20f5d46bbc5f;p=linux-2.6-microblaze.git

diff --git a/drivers/gpu/drm/i915/i915_utils.h b/drivers/gpu/drm/i915/i915_utils.h
index 2987219a6300..4920ff9aba62 100644
--- a/drivers/gpu/drm/i915/i915_utils.h
+++ b/drivers/gpu/drm/i915/i915_utils.h
@@ -131,6 +131,18 @@ __check_struct_size(size_t base, size_t arr, size_t count, size_t *size)
 	((typeof(ptr))((unsigned long)(ptr) | __bits));			\
 })
 
+#define ptr_count_dec(p_ptr) do {					\
+	typeof(p_ptr) __p = (p_ptr);					\
+	unsigned long __v = (unsigned long)(*__p);			\
+	*__p = (typeof(*p_ptr))(--__v);					\
+} while (0)
+
+#define ptr_count_inc(p_ptr) do {					\
+	typeof(p_ptr) __p = (p_ptr);					\
+	unsigned long __v = (unsigned long)(*__p);			\
+	*__p = (typeof(*p_ptr))(++__v);					\
+} while (0)
+
 #define page_mask_bits(ptr) ptr_mask_bits(ptr, PAGE_SHIFT)
 #define page_unmask_bits(ptr) ptr_unmask_bits(ptr, PAGE_SHIFT)
 #define page_pack_bits(ptr, bits) ptr_pack_bits(ptr, bits, PAGE_SHIFT)