From eb579f5811ddbc052c8d6b3bba38dd4e5148cf7b Mon Sep 17 00:00:00 2001 From: Inaky Perez-Gonzalez Date: Tue, 31 Jul 2007 20:33:59 -0700 Subject: [PATCH] usb: cleanup usb_register_bus() and hook up sysfs group 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 Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/hcd.c | 33 ++++++++++++++++++--------------- 1 file changed, 18 insertions(+), 15 deletions(-) diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index 875e2476c1..a5a46a5537 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -792,27 +792,23 @@ static void usb_bus_init (struct usb_bus *bus) */ 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 */ @@ -821,8 +817,15 @@ static int usb_register_bus(struct usb_bus *bus) 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; } /** -- 2.39.5