On 09/12/2022 12:14, Andrzej Hajda wrote:
Since it is used only to get type of member it can be replaced
with typeof_member.
Signed-off-by: Andrzej Hajda <andrzej.hajda@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_utils.h | 4 +---
drivers/gpu/drm/i915/intel_runtime_pm.h | 2 +-
2 files changed, 2 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_utils.h b/drivers/gpu/drm/i915/i915_utils.h
index 6c14d13364bf78..b64192d9c7daa7 100644
--- a/drivers/gpu/drm/i915/i915_utils.h
+++ b/drivers/gpu/drm/i915/i915_utils.h
@@ -149,8 +149,6 @@ bool i915_error_injected(void);
#define page_pack_bits(ptr, bits) ptr_pack_bits(ptr, bits, PAGE_SHIFT)
#define page_unpack_bits(ptr, bits) ptr_unpack_bits(ptr, bits, PAGE_SHIFT)
-#define struct_member(T, member) (((T *)0)->member)
-
#define fetch_and_zero(ptr) ({ \
typeof(*ptr) __T = *(ptr); \
*(ptr) = (typeof(*ptr))0; \
@@ -170,7 +168,7 @@ static __always_inline ptrdiff_t ptrdiff(const void *a, const void *b)
*/
#define container_of_user(ptr, type, member) ({ \
void __user *__mptr = (void __user *)(ptr); \
- BUILD_BUG_ON_MSG(!__same_type(*(ptr), struct_member(type, member)) && \
+ BUILD_BUG_ON_MSG(!__same_type(*(ptr), typeof_member(type, member)) && \
#define __same_type(a, b) __builtin_types_compatible_p(typeof(a), typeof(b))
#define typeof_member(T, m) typeof(((T*)0)->m)
So expands to:
__builtin_types_compatible_p(typeof(*(ptr)), typeof(typeof(((type*)0)->m)));
I guess that's okay since infinite number of typeofs is still a typeof.
Regards,
Tvrtko
!__same_type(*(ptr), void), \
"pointer type mismatch in container_of()"); \
((type __user *)(__mptr - offsetof(type, member))); })
diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.h b/drivers/gpu/drm/i915/intel_runtime_pm.h
index 98b8b28baaa15e..e592e8d6499a1f 100644
--- a/drivers/gpu/drm/i915/intel_runtime_pm.h
+++ b/drivers/gpu/drm/i915/intel_runtime_pm.h
@@ -96,7 +96,7 @@ struct intel_runtime_pm {
};
#define BITS_PER_WAKEREF \
- BITS_PER_TYPE(struct_member(struct intel_runtime_pm, wakeref_count))
+ BITS_PER_TYPE(typeof_member(struct intel_runtime_pm, wakeref_count))
#define INTEL_RPM_WAKELOCK_SHIFT (BITS_PER_WAKEREF / 2)
#define INTEL_RPM_WAKELOCK_BIAS (1 << INTEL_RPM_WAKELOCK_SHIFT)
#define INTEL_RPM_RAW_WAKEREF_MASK (INTEL_RPM_WAKELOCK_BIAS - 1)
