* [PATCH] device: Make dev_WARN/dev_WARN_ONCE print device as well as driver name
@ 2013-10-24 21:42 Bjorn Helgaas
2013-10-25 2:29 ` Felipe Balbi
0 siblings, 1 reply; 2+ messages in thread
From: Bjorn Helgaas @ 2013-10-24 21:42 UTC (permalink / raw)
To: Greg Kroah-Hartman; +Cc: Arjan van de Ven, linux-kernel, Felipe Balbi
dev_WARN() and dev_WARN_ONCE() are annoying because (1) they include
only the driver name, not the device name, and (2) they print a spurious
newline in the middle. This results in messages like this that are less
useful than they should be:
[ 40.094995] Device pcieport
disabling already-disabled device
This patch makes them work more like dev_printk().
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
---
include/linux/device.h | 11 +++++------
1 file changed, 5 insertions(+), 6 deletions(-)
diff --git a/include/linux/device.h b/include/linux/device.h
index 2a9d6ed..7136a5c 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -1149,16 +1149,15 @@ do { \
#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.
+ * dev_WARN*() acts like dev_printk(), but with the key difference of
+ * using WARN/WARN_ONCE to include file/line information and a backtrace.
*/
#define dev_WARN(dev, format, arg...) \
- WARN(1, "Device: %s\n" format, dev_driver_string(dev), ## arg);
+ WARN(1, "%s %s: " format, dev_driver_string(dev), dev_name(dev), ## arg);
#define dev_WARN_ONCE(dev, condition, format, arg...) \
- WARN_ONCE(condition, "Device %s\n" format, \
- dev_driver_string(dev), ## arg)
+ WARN_ONCE(condition, "%s %s: " format, \
+ dev_driver_string(dev), dev_name(dev), ## arg)
/* Create alias, so I can be autoloaded. */
#define MODULE_ALIAS_CHARDEV(major,minor) \
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] device: Make dev_WARN/dev_WARN_ONCE print device as well as driver name
2013-10-24 21:42 [PATCH] device: Make dev_WARN/dev_WARN_ONCE print device as well as driver name Bjorn Helgaas
@ 2013-10-25 2:29 ` Felipe Balbi
0 siblings, 0 replies; 2+ messages in thread
From: Felipe Balbi @ 2013-10-25 2:29 UTC (permalink / raw)
To: Bjorn Helgaas
Cc: Greg Kroah-Hartman, Arjan van de Ven, linux-kernel, Felipe Balbi
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On Thu, Oct 24, 2013 at 03:42:33PM -0600, Bjorn Helgaas wrote:
> dev_WARN() and dev_WARN_ONCE() are annoying because (1) they include
> only the driver name, not the device name, and (2) they print a spurious
> newline in the middle. This results in messages like this that are less
> useful than they should be:
>
> [ 40.094995] Device pcieport
> disabling already-disabled device
>
> This patch makes them work more like dev_printk().
>
> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Pretty cool, much nicer output indeed :-)
Reviewed-by: Felipe Balbi <balbi@ti.com>
--
balbi
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2013-10-24 21:42 [PATCH] device: Make dev_WARN/dev_WARN_ONCE print device as well as driver name Bjorn Helgaas
2013-10-25 2:29 ` Felipe Balbi
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