On 7 July 2015 at 22:29, Masahiro Yamada yamada.masahiro@socionext.com wrote:
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
drivers/usb/musb-new/musb_gadget_ep0.c | 1 + include/linux/compat.h | 2 -- 2 files changed, 1 insertion(+), 2 deletions(-)
Acked-by: Simon Glass sjg@chromium.org