| From | Greg Kroah-Hartman <> | Subject | [PATCH 01/44] device: add dev_WARN_ONCE | Date | Thu, 19 May 2011 17:10:19 -0700 |
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From: Felipe Balbi <balbi@ti.com>
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> --- 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 ab8dfc0..d484051 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)) -- 1.7.4.2
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