On 21 August 2015 at 22:31, Heiko Schocher hs@denx.de wrote:
introduce BIT() definition, used in at91_udc gadget driver.
Signed-off-by: Heiko Schocher hs@denx.de
Changes in v4: None Changes in v3:
- new in v3
Changes in v2: None
include/linux/bitops.h | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/include/linux/bitops.h b/include/linux/bitops.h index e724310..7d30ace 100644 --- a/include/linux/bitops.h +++ b/include/linux/bitops.h @@ -3,6 +3,8 @@
#include <asm/types.h>
+#define BIT(nr) (1UL << (nr))
Looks like few of them are interested with this BIT macro, but I'm thinking this is not the right place just add above BIT_MASK
@@ -104,6 +104,7 @@ static inline unsigned int generic_hweight8(unsigned int w) return (res & 0x0F) + ((res >> 4) & 0x0F); }
+#define BIT(nr) (1UL << (nr)) #define BIT_MASK(nr) (1UL << ((nr) % BITS_PER_LONG)) #define BIT_WORD(nr) ((nr) / BITS_PER_LONG)
this will give an impression to have all BIT macro's at once like Linux.
/*
- ffs: find first bit set. This is defined the same way as
- the libc and compiler builtin ffs routines, therefore
-- 2.1.0
thanks!