diff options
| -rw-r--r-- | drivers/usb/storage/transport.c | 1 | ||||
| -rw-r--r-- | drivers/usb/storage/usb.c | 30 |
2 files changed, 14 insertions, 17 deletions
diff --git a/drivers/usb/storage/transport.c b/drivers/usb/storage/transport.c index c1ba5301ebf..e89e945fc4a 100644 --- a/drivers/usb/storage/transport.c +++ b/drivers/usb/storage/transport.c @@ -923,6 +923,7 @@ int usb_stor_Bulk_max_lun(struct us_data *us) int result; /* issue the command */ + us->iobuf[0] = 0; result = usb_stor_control_msg(us, us->recv_ctrl_pipe, US_BULK_GET_MAX_LUN, USB_DIR_IN | USB_TYPE_CLASS | diff --git a/drivers/usb/storage/usb.c b/drivers/usb/storage/usb.c index 5164900e40c..92ee079d917 100644 --- a/drivers/usb/storage/usb.c +++ b/drivers/usb/storage/usb.c @@ -747,25 +747,13 @@ static int usb_stor_acquire_resources(struct us_data *us) return -ENOMEM; } - /* Lock the device while we carry out the next two operations */ - down(&us->dev_semaphore); - - /* For bulk-only devices, determine the max LUN value */ - if (us->protocol == US_PR_BULK) { - p = usb_stor_Bulk_max_lun(us); - if (p < 0) { - up(&us->dev_semaphore); - return p; - } - us->max_lun = p; - } - /* Just before we start our control thread, initialize * the device if it needs initialization */ - if (us->unusual_dev->initFunction) - us->unusual_dev->initFunction(us); - - up(&us->dev_semaphore); + if (us->unusual_dev->initFunction) { + p = us->unusual_dev->initFunction(us); + if (p) + return p; + } /* Start up our control thread */ p = kernel_thread(usb_stor_control_thread, us, CLONE_VM); @@ -904,6 +892,14 @@ retry: /* If the device is still connected, perform the scanning */ if (!test_bit(US_FLIDX_DISCONNECTING, &us->flags)) { + + /* For bulk-only devices, determine the max LUN value */ + if (us->protocol == US_PR_BULK && + !(us->flags & US_FL_SINGLE_LUN)) { + down(&us->dev_semaphore); + us->max_lun = usb_stor_Bulk_max_lun(us); + up(&us->dev_semaphore); + } scsi_scan_host(us_to_host(us)); printk(KERN_DEBUG "usb-storage: device scan complete\n"); |