[PATCH] fix dev_printk to work even in the absence of an attached driver

8bcb3f98 · James Bottomley · Greg Kroah-Hartman · ab7f7331 · 8bcb3f98
Commit 8bcb3f98 authored May 11, 2004 by James Bottomley Committed by Greg Kroah-Hartman May 11, 2004
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include/linux/device.h include/linux/device.h +1 -1

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--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -400,7 +400,7 @@ extern void firmware_unregister(struct subsystem *);

 /* debugging and troubleshooting/diagnostic helpers. */
 #define dev_printk(level, dev, format, arg...)	\
-	printk(level "%s %s: " format , (dev)->driver->name , (dev)->bus_id , ## arg)
+	printk(level "%s %s: " format , (dev)->driver ? (dev)->driver->name : "" , (dev)->bus_id , ## arg)

 #ifdef DEBUG
 #define dev_dbg(dev, format, arg...)		\