lkml.org 
[lkml]   [2016]   [Aug]   [18]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] Documentation: rs485: Do not define manually the ioctl
Date
It is not a very good practice to define the IOCTL manually instead of
using the header file.

Fix it on the documentation example.

Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
---
Documentation/serial/serial-rs485.txt | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/Documentation/serial/serial-rs485.txt b/Documentation/serial/serial-rs485.txt
index 2253b8b45a74..389fcd4759e9 100644
--- a/Documentation/serial/serial-rs485.txt
+++ b/Documentation/serial/serial-rs485.txt
@@ -45,9 +45,8 @@

#include <linux/serial.h>

- /* RS485 ioctls: */
- #define TIOCGRS485 0x542E
- #define TIOCSRS485 0x542F
+ /* Include definition for RS485 ioctls: TIOCGRS485 and TIOCSRS485 */
+ #include <sys/ioctl.h>

/* Open your specific device (e.g., /dev/mydevice): */
int fd = open ("/dev/mydevice", O_RDWR);
--
2.8.1
\
 
 \ /
  Last update: 2016-09-17 09:57    [W:0.030 / U:0.964 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site