This path cleans the exit paths of usb_register_bus() [to use a goto
schema], maximum line length (keeping it under ~75).
Signed-off-by: Inaky Perez-Gonzalez <[EMAIL PROTECTED]>
---
drivers/usb/core/hcd.c | 33 ++++++++++++++++++---------------
1 file changed, 18 insertions(+), 15 deletions(-)
Index: linux.hg/drivers/usb/core/hcd.c
===================================================================
--- linux.hg.orig/drivers/usb/core/hcd.c 2007-07-09 14:16:39.000000000
-0700
+++ linux.hg/drivers/usb/core/hcd.c 2007-07-09 15:09:27.000000000 -0700
@@ -770,27 +770,23 @@
*/
static int usb_register_bus(struct usb_bus *bus)
{
+ int result = -E2BIG;
int busnum;
mutex_lock(&usb_bus_list_lock);
busnum = find_next_zero_bit (busmap.busmap, USB_MAXBUS, 1);
- if (busnum < USB_MAXBUS) {
- set_bit (busnum, busmap.busmap);
- bus->busnum = busnum;
- } else {
+ if (busnum >= USB_MAXBUS) {
printk (KERN_ERR "%s: too many buses\n", usbcore_name);
- mutex_unlock(&usb_bus_list_lock);
- return -E2BIG;
+ goto error_find_busnum;
}
-
+ set_bit (busnum, busmap.busmap);
+ bus->busnum = busnum;
bus->class_dev = class_device_create(usb_host_class, NULL, MKDEV(0,0),
- bus->controller, "usb_host%d",
busnum);
- if (IS_ERR(bus->class_dev)) {
- clear_bit(busnum, busmap.busmap);
- mutex_unlock(&usb_bus_list_lock);
- return PTR_ERR(bus->class_dev);
- }
-
+ bus->controller, "usb_host%d",
+ busnum);
+ result = PTR_ERR(bus->class_dev);
+ if (IS_ERR(bus->class_dev))
+ goto error_create_class_dev;
class_set_devdata(bus->class_dev, bus);
/* Add it to the local list of buses */
@@ -799,8 +795,15 @@
usb_notify_add_bus(bus);
- dev_info (bus->controller, "new USB bus registered, assigned bus number
%d\n", bus->busnum);
+ dev_info (bus->controller, "new USB bus registered, assigned bus "
+ "number %d\n", bus->busnum);
return 0;
+
+error_create_class_dev:
+ clear_bit(busnum, busmap.busmap);
+error_find_busnum:
+ mutex_unlock(&usb_bus_list_lock);
+ return result;
}
/**
--
Inaky
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