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| author | Felipe Balbi <balbi@ti.com> | 2011-03-16 15:59:35 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-04-19 16:45:50 -0700 |
| commit | bcdd323b893ad3c9b7ef26b5e4a0bef974238501 (patch) | |
| tree | 3a107018f470ec4d7e021d1421ba3688770f473f /include/linux/device.h | |
| parent | f0e615c3cb72b42191b558c130409335812621d8 (diff) | |
| download | lwn-bcdd323b893ad3c9b7ef26b5e4a0bef974238501.tar.gz lwn-bcdd323b893ad3c9b7ef26b5e4a0bef974238501.zip | |
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.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/include/linux/device.h b/include/linux/device.h index ab8dfc095709..d4840511e877 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)) |