linux_compat: remove cpu_relax() define
authorMasahiro Yamada <yamada.masahiro@socionext.com>
Mon, 13 Jul 2015 04:17:05 +0000 (13:17 +0900)
committerSimon Glass <sjg@chromium.org>
Wed, 22 Jul 2015 13:30:37 +0000 (07:30 -0600)
commit3721eaf28e5e074bebf8191e37dacbd75ffc459d
tree4cc6db6b2615ed22b5c6539af7d301de7f58a471
parent5f7e310467b62e136831f6ea418c91f82df18b77
linux_compat: remove cpu_relax() define

The macro cpu_relax() is defined by several headers in different
ways.

arch/{arm,avr32,mips}/include/asm/processor.h defines it as follows:
  #define cpu_relax() barrier()

On the other hand, include/linux/compat.h defines it as follows:
  #define cpu_relax() do {} while (0)

If both headers are included from the same source file, the warning
  warning: "cpu_relax" redefined [enabled by default]
is displayed.

It effectively makes it impossible to include <linux/compat.h>
from some sources.  Drop the latter.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Acked-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Lukasz Majewski <l.majewski@samsung.com>
drivers/usb/musb-new/musb_gadget_ep0.c
include/linux/compat.h