diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_utils.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_utils.h | 20 |
1 files changed, 9 insertions, 11 deletions
diff --git a/drivers/gpu/drm/i915/i915_utils.h b/drivers/gpu/drm/i915/i915_utils.h index d652ba5d2320..562f756da421 100644 --- a/drivers/gpu/drm/i915/i915_utils.h +++ b/drivers/gpu/drm/i915/i915_utils.h @@ -161,17 +161,15 @@ __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 ptr_dec(ptr) ({ \ + unsigned long __v = (unsigned long)(ptr); \ + (typeof(ptr))(__v - 1); \ +}) + +#define ptr_inc(ptr) ({ \ + unsigned long __v = (unsigned long)(ptr); \ + (typeof(ptr))(__v + 1); \ +}) #define page_mask_bits(ptr) ptr_mask_bits(ptr, PAGE_SHIFT) #define page_unmask_bits(ptr) ptr_unmask_bits(ptr, PAGE_SHIFT) |