[U-Boot] [PATCH v4 1/4] bitops: introduce BIT() definition
Michael Heimpold
mhei at heimpold.de
Fri Aug 21 21:26:41 CEST 2015
Hi,
Am Freitag, 21. August 2015, 19:01:56 schrieb Heiko Schocher:
> introduce BIT() definition, used in at91_udc gadget
> driver.
>
> Signed-off-by: Heiko Schocher <hs at 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))
> +
JFYI, a few months ago, Wolfgang Denk NAKed a similar patch:
http://lists.denx.de/pipermail/u-boot/2014-February/173669.html
But I don't know whether this still stands.
> /*
> * ffs: find first bit set. This is defined the same way as
> * the libc and compiler builtin ffs routines, therefore
>
Best regards,
Michael
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