[PATCH] can: fix proc/can/net/rcvlist_* header alignment on 64-bit system

From: Erik Flodin <erik@flodin.me>
To: unlisted-recipients:; (no To-header on input)
Cc: Erik Flodin <erik@flodin.me>,
	Oliver Hartkopp <socketcan@hartkopp.net>,
	Marc Kleine-Budde <mkl@pengutronix.de>,
	"David S. Miller" <davem@davemloft.net>,
	Jakub Kicinski <kuba@kernel.org>,
	linux-can@vger.kernel.org, netdev@vger.kernel.org
Subject: [PATCH] can: fix proc/can/net/rcvlist_* header alignment on 64-bit system
Date: Sun, 25 Apr 2021 10:49:29 +0200	[thread overview]
Message-ID: <20210425084950.171529-1-erik@flodin.me> (raw)

Before this fix, the function and userdata columns weren't aligned:
  device   can_id   can_mask  function  userdata   matches  ident
   vcan0  92345678  9fffffff  0000000000000000  0000000000000000         0  raw
   vcan0     123    00000123  0000000000000000  0000000000000000         0  raw

After the fix they are:
  device   can_id   can_mask      function          userdata       matches  ident
   vcan0  92345678  9fffffff  0000000000000000  0000000000000000         0  raw
   vcan0     123    00000123  0000000000000000  0000000000000000         0  raw

Signed-off-by: Erik Flodin <erik@flodin.me>
---
 net/can/proc.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/net/can/proc.c b/net/can/proc.c
index 5ea8695f507e..97901e56c429 100644
--- a/net/can/proc.c
+++ b/net/can/proc.c
@@ -205,8 +205,11 @@ static void can_print_recv_banner(struct seq_file *m)
 	 *                  can1.  00000000  00000000  00000000
 	 *                 .......          0  tp20
 	 */
-	seq_puts(m, "  device   can_id   can_mask  function"
-			"  userdata   matches  ident\n");
+	const char *pad = sizeof(void *) == 8 ? "    " : "";
+
+	seq_printf(m, "  device   can_id   can_mask  %sfunction%s"
+		   "  %suserdata%s   matches  ident\n",
+		   pad, pad, pad, pad);
 }
 
 static int can_stats_proc_show(struct seq_file *m, void *v)
-- 
2.31.0

