backports: add U32_MAX

This was added in:
commit 89a0714106aac7309c7dfa0f004b39e1e89d2942
Author: Alex Elder <alex.elder@linaro.org>
Date:   Thu Jan 23 15:54:00 2014 -0800

    kernel.h: define u8, s8, u32, etc. limits

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

diff --git a/backport/backport-include/linux/kernel.h b/backport/backport-include/linux/kernel.h
index e695842b9fff42564f4d2bc5e6e9990cc9863dce..933686f8a1032f2d7e21b78e0956fbf3ebad00d9 100644 (file)
--- a/backport/backport-include/linux/kernel.h
+++ b/backport/backport-include/linux/kernel.h
@@ -45,6 +45,10 @@
 #define SHRT_MIN       ((s16)(-SHRT_MAX - 1))
 #endif
 
+#ifndef U32_MAX
+#define U32_MAX                ((u32)~0U)
+#endif
+
 #ifndef __round_mask
 #define __round_mask(x, y) ((__typeof__(x))((y)-1))
 #define round_up(x, y) ((((x)-1) | __round_mask(x, y))+1)