From: Arjan van de Ven Date: Sun, 21 Sep 2008 02:08:39 +0000 (-0700) Subject: debug: Introduce a dev_WARN() function X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=e61396627f91abb855ddd8925be9172fb5871944;p=openwrt%2Fstaging%2Fblogic.git debug: Introduce a dev_WARN() function in the line of dev_printk(), this patch introduces a dev_WARN() function, that takes a struct device and then a printk format/args set of arguments. Unlike dev_printk(), the effect is that of WARN() in that a full warning message (including filename/line, module list, versions and a backtrace) is printed in addition to the device name and the arguments. Signed-off-by: Arjan van de Ven Signed-off-by: Greg Kroah-Hartman --- diff --git a/include/linux/device.h b/include/linux/device.h index fb034461b395..ec90e79f6a00 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -570,6 +570,14 @@ extern const char *dev_driver_string(const struct device *dev); ({ if (0) dev_printk(KERN_DEBUG, dev, format, ##arg); 0; }) #endif +/* + * dev_WARN() acts like dev_printk(), but with the key difference + * of using a WARN/WARN_ON to get the message out, including the + * file/line information and a backtrace. + */ +#define dev_WARN(dev, format, arg...) \ + WARN(1, "Device: %s\n" format, dev_driver_string(dev), ## arg); + /* Create alias, so I can be autoloaded. */ #define MODULE_ALIAS_CHARDEV(major,minor) \ MODULE_ALIAS("char-major-" __stringify(major) "-" __stringify(minor))