From 17f060224fb9f435c6f9306b7b61419d038def13 Mon Sep 17 00:00:00 2001 From: Richard Sharpe Date: Wed, 10 Oct 2007 10:56:28 -0700 Subject: [PATCH] USB: allow usbstorage to have LUNS greater than 2Tb Attached is a very small patch (several comment lines) and a one-line coded change) that allows for USB storage devices that are larger than 2TB. At the company where I work we need such support, and one of my co-workers, Jane Liu, pointed out that SCSI low-layer drivers need to specify what size CDBs they accept. After looking through the code it became obvious that the current USB Storage code accepted the default of 12-byte CDBs, so I changed it to accept 16-byte CDBs. This allows our device to work. Signed-off-by: Richard Sharpe Signed-off-by: Matthew Dharm Signed-off-by: Greg Kroah-Hartman --- drivers/usb/storage/usb.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/usb/storage/usb.c b/drivers/usb/storage/usb.c index 59181667066c..3451e8d03ab0 100644 --- a/drivers/usb/storage/usb.c +++ b/drivers/usb/storage/usb.c @@ -960,6 +960,10 @@ static int storage_probe(struct usb_interface *intf, return -ENOMEM; } + /* + * Allow 16-byte CDBs and thus > 2TB + */ + host->max_cmd_len = 16; us = host_to_us(host); memset(us, 0, sizeof(struct us_data)); mutex_init(&(us->dev_mutex)); -- 2.11.0