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authorFelipe Balbi <balbi@ti.com>2011-03-16 15:59:35 +0200
committerGreg Kroah-Hartman <gregkh@suse.de>2011-04-19 16:45:50 -0700
commitbcdd323b893ad3c9b7ef26b5e4a0bef974238501 (patch)
tree3a107018f470ec4d7e021d1421ba3688770f473f /include/linux/device.h
parentf0e615c3cb72b42191b558c130409335812621d8 (diff)
device: add dev_WARN_ONCE
it's quite useful to print the device name on the stack dump caused by WARN(), but there are other cases where we might want to use WARN_ONCE. Introduce a helper similar to dev_WARN() for that case too. Signed-off-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'include/linux/device.h')
-rw-r--r--include/linux/device.h6
1 files changed, 5 insertions, 1 deletions
diff --git a/include/linux/device.h b/include/linux/device.h
index ab8dfc09570..d4840511e87 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -742,13 +742,17 @@ do { \
#endif
/*
- * dev_WARN() acts like dev_printk(), but with the key difference
+ * 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);
+#define dev_WARN_ONCE(dev, condition, format, arg...) \
+ WARN_ONCE(condition, "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))