linux-kernel - [PATCH v2] Doc: networking: txtimestamp: fix printf format warning

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Date:	Thu,  4 Jun 2015 21:27:38 +0200
From:	Frans Klaver <fransklaver@...il.com>
To:	Jonathan Corbet <corbet@....net>
Cc:	linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
	Richard Cochran <richardcochran@...il.com>,
	Frans Klaver <fransklaver@...il.com>
Subject: [PATCH v2] Doc: networking: txtimestamp: fix printf format warning

Documentation/networking/timestamping/txtimestamp.c: In function ‘__print_timestamp’:
Documentation/networking/timestamping/txtimestamp.c:99:3: warning: format ‘%ld’ expects argument of type ‘long int’, but argument 3 has type ‘int64_t’ [-Wformat=]
   fprintf(stderr, "  (%+ld us)", cur_ms - prev_ms);

int64_t differs per platform, so a type specifier that differs along
with it is required.

Signed-off-by: Frans Klaver <fransklaver@...il.com>
---
v1..v2: switch from cast to inttypes.h defined PRId64

 Documentation/networking/timestamping/txtimestamp.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Documentation/networking/timestamping/txtimestamp.c b/Documentation/networking/timestamping/txtimestamp.c
index 8217510..5df0704 100644
--- a/Documentation/networking/timestamping/txtimestamp.c
+++ b/Documentation/networking/timestamping/txtimestamp.c
@@ -36,6 +36,7 @@
 #include <asm/types.h>
 #include <error.h>
 #include <errno.h>
+#include <inttypes.h>
 #include <linux/errqueue.h>
 #include <linux/if_ether.h>
 #include <linux/net_tstamp.h>
@@ -49,7 +50,6 @@
 #include <poll.h>
 #include <stdarg.h>
 #include <stdbool.h>
-#include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -96,7 +96,7 @@ static void __print_timestamp(const char *name, struct timespec *cur,
 		prev_ms = (long) ts_prev.tv_sec * 1000 * 1000;
 		prev_ms += ts_prev.tv_nsec / 1000;
 
-		fprintf(stderr, "  (%+ld us)", cur_ms - prev_ms);
+		fprintf(stderr, "  (%+" PRId64 " us)", cur_ms - prev_ms);
 	}
 
 	ts_prev = *cur;
-- 
2.4.0

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