Commit e6139662 authored by Arjan van de Ven's avatar Arjan van de Ven Committed by Greg Kroah-Hartman
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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: default avatarArjan van de Ven <>
Signed-off-by: default avatarGreg Kroah-Hartman <>
parent b31ca3f5
......@@ -570,6 +570,14 @@ extern const char *dev_driver_string(const struct device *dev);
({ if (0) dev_printk(KERN_DEBUG, dev, format, ##arg); 0; })
* 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))
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