driver-core: prepare for 2.6.27 api change by adding dev_set_name

Create the dev_set_name function now so that various subsystems can
start changing over to it before other changes in 2.6.27 will make it
compulsory.

Cc: Kay Sievers <[e-mail]>
Signed-off-by: Stephen Rothwell <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/base/core.c

···
 }
 
 /**
+ * dev_set_name - set a device name
+ * @dev: device
+ */
+int dev_set_name(struct device *dev, const char *fmt, ...)
+{
+	va_list vargs;
+
+	va_start(vargs, fmt);
+	vsnprintf(dev->bus_id, sizeof(dev->bus_id), fmt, vargs);
+	va_end(vargs);
+	return 0;
+}
+EXPORT_SYMBOL_GPL(dev_set_name);
+
+/**
  * device_add - add device to device hierarchy.
  * @dev: device.
  *

include/linux/device.h

···
 	return dev->bus_id;
 }
 
+extern int dev_set_name(struct device *dev, const char *name, ...)
+			__attribute__((format(printf, 2, 3)));
+
 #ifdef CONFIG_NUMA
 static inline int dev_to_node(struct device *dev)
 {