[PATCH] rtnetlink: fix gcc -Wconversion warning

[PATCH] rtnetlink: fix gcc -Wconversion warning

[Ronen Arad]

RTA_ALIGNTO is currently define as 4. It has to be 4U to prevent warning
for RTA_ALIGN and RTA_DATA expansions when -Wconversion gcc option is
enabled.
This follows NLMSG_ALIGNTO definition in <include/uapi/linux/netlink.h>.

Signed-off-by: Ronen Arad <ronen.arad@intel.com>
---
 include/uapi/linux/rtnetlink.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/uapi/linux/rtnetlink.h b/include/uapi/linux/rtnetlink.h
index 4db0b3c..123a5af 100644
--- a/include/uapi/linux/rtnetlink.h
+++ b/include/uapi/linux/rtnetlink.h
@@ -160,7 +160,7 @@ struct rtattr {
 
 /* Macros to handle rtattributes */
 
-#define RTA_ALIGNTO	4
+#define RTA_ALIGNTO	4U
 #define RTA_ALIGN(len) ( ((len)+RTA_ALIGNTO-1) & ~(RTA_ALIGNTO-1) )
 #define RTA_OK(rta,len) ((len) >= (int)sizeof(struct rtattr) && \
 			 (rta)->rta_len >= sizeof(struct rtattr) && \
-- 
2.1.0

Re: [PATCH] rtnetlink: fix gcc -Wconversion warning

[David Miller]

From: Ronen Arad <ronen.arad@intel.com>
Date: Fri,  9 Oct 2015 10:35:47 -0700

> RTA_ALIGNTO is currently define as 4. It has to be 4U to prevent warning
> for RTA_ALIGN and RTA_DATA expansions when -Wconversion gcc option is
> enabled.
> This follows NLMSG_ALIGNTO definition in <include/uapi/linux/netlink.h>.
> 
> Signed-off-by: Ronen Arad <ronen.arad@intel.com>

Applied, thank you.