svn commit: r345909 - stable/12/sys/compat/linuxkpi/common/include/linux

[Hans Petter Selasky]

Author: hselasky
Date: Fri Apr  5 11:07:15 2019
New Revision: 345909
URL: https://svnweb.freebsd.org/changeset/base/345909

Log:
  MFC r345091:
  Implement dev_err_once() function macro in the LinuxKPI.
  
  Submitted by:		Johannes Lundberg <johalun0 at gmail.com>
  Sponsored by:		Limelight Networks
  Sponsored by:		Mellanox Technologies

Modified:
  stable/12/sys/compat/linuxkpi/common/include/linux/device.h
Directory Properties:
  stable/12/   (props changed)

Modified: stable/12/sys/compat/linuxkpi/common/include/linux/device.h
==============================================================================
--- stable/12/sys/compat/linuxkpi/common/include/linux/device.h	Fri Apr  5 11:06:15 2019	(r345908)
+++ stable/12/sys/compat/linuxkpi/common/include/linux/device.h	Fri Apr  5 11:07:15 2019	(r345909)
@@ -183,6 +183,14 @@ show_class_attr_string(struct class *class,
 #define	dev_printk(lvl, dev, fmt, ...)					\
 	    device_printf((dev)->bsddev, fmt, ##__VA_ARGS__)
 
+#define	dev_err_once(dev, ...) do {		\
+	static bool __dev_err_once;		\
+	if (!__dev_err_once) {			\
+		__dev_err_once = 1;		\
+		dev_err(dev, __VA_ARGS__);	\
+	}					\
+} while (0)
+
 #define	dev_err_ratelimited(dev, ...) do {	\
 	static linux_ratelimit_t __ratelimited;	\
 	if (linux_ratelimited(&__ratelimited))	\