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.masah...@socionext.com> Reviewed-by: Heiko Schocher <h...@denx.de> Acked-by: Simon Glass <s...@chromium.org> --- Changes in v2: None drivers/usb/musb-new/musb_gadget_ep0.c | 1 + include/linux/compat.h | 2 -- 2 files changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/usb/musb-new/musb_gadget_ep0.c b/drivers/usb/musb-new/musb_gadget_ep0.c index 5a71501..415a9f2 100644 --- a/drivers/usb/musb-new/musb_gadget_ep0.c +++ b/drivers/usb/musb-new/musb_gadget_ep0.c @@ -43,6 +43,7 @@ #else #include <common.h> #include "linux-compat.h" +#include <asm/processor.h> #endif #include "musb_core.h" diff --git a/include/linux/compat.h b/include/linux/compat.h index 6ff3915..da1420f 100644 --- a/include/linux/compat.h +++ b/include/linux/compat.h @@ -315,8 +315,6 @@ struct notifier_block {}; typedef unsigned long dmaaddr_t; -#define cpu_relax() do {} while (0) - #define pm_runtime_get_sync(dev) do {} while (0) #define pm_runtime_put(dev) do {} while (0) #define pm_runtime_put_sync(dev) do {} while (0) -- 1.9.1 _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot