[PATCH next 08/14] bits: simplify GENMASK_TYPE()
From: david . laight . linux
Date: Wed Jan 21 2026 - 09:58:07 EST
From: David Laight <david.laight.linux@xxxxxxxxx>
Since the type is always unsigned (T)-1 is always the correct value
so there is no need to use type_max().
Signed-off-by: David Laight <david.laight.linux@xxxxxxxxx>
---
include/linux/bits.h | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/include/linux/bits.h b/include/linux/bits.h
index a40cc861b3a7..697318f2a47d 100644
--- a/include/linux/bits.h
+++ b/include/linux/bits.h
@@ -45,8 +45,7 @@
*/
#define GENMASK_TYPE(t, h, l) \
((t)(GENMASK_INPUT_CHECK(h, l) + \
- (type_max(t) << (l) & \
- type_max(t) >> (BITS_PER_TYPE(t) - 1 - (h)))))
+ ((t)-1 << (l) & (t)-1 >> (BITS_PER_TYPE(t) - 1 - (h)))))
#define GENMASK(h, l) GENMASK_TYPE(unsigned long, h, l)
#define GENMASK_ULL(h, l) GENMASK_TYPE(unsigned long long, h, l)
--
2.39.5