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[PATCH] Driver Core: Make dev_info and friends print the bus name if there is no driver

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This patch (as721) makes dev_info and related macros print the device's
bus name if the device doesn't have a driver, instead of printing just a
blank.  If the device isn't on a bus either... well, then it does leave
a blank space.  But it will be easier for someone else to change if they
want.

Cc: Matthew Wilcox <matthew@wil.cx>
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Alan Stern
2006-06-16 17:10:48 -04:00
committed by Greg Kroah-Hartman
parent e9a7d305fa
commit 3e95637a48
2 changed files with 18 additions and 1 deletions
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16
drivers/base/core.c
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@@ -29,6 +29,22 @@ int (*platform_notify_remove)(struct device * dev) = NULL;
* sysfs bindings for devices.
*/
/**
* dev_driver_string - Return a device's driver name, if at all possible
* @dev: struct device to get the name of
*
* Will return the device's driver's name if it is bound to a device. If
* the device is not bound to a device, it will return the name of the bus
* it is attached to. If it is not attached to a bus either, an empty
* string will be returned.
*/
const char *dev_driver_string(struct device *dev)
{
return dev->driver ? dev->driver->name :
(dev->bus ? dev->bus->name : "");
}
EXPORT_SYMBOL_GPL(dev_driver_string);
#define to_dev(obj) container_of(obj, struct device, kobj)
#define to_dev_attr(_attr) container_of(_attr, struct device_attribute, attr)