USB: storage: raise timeout in usb_stor_Bulk_max_lun

commit 7a777919bbeec3eac1d7904a728a60e9c2bb9c67 upstream.

Requests to get max LUN, for certain USB storage devices, require a
longer timeout before a correct reply is returned. This happens for a
Realtek USB Card Reader (0bda:0152), which has a max LUN of 3 but is set
to 0, thus losing functionality, because of the timeout occurring too
quickly.

Raising the timeout value fixes the issue and might help other devices
to return a correct max LUN value as well.

Signed-off-by: Giacomo Lozito <james@develia.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/storage/transport.c b/drivers/usb/storage/transport.c
index fcb320217218109d60147b5bb5dc297f65b96da0..e20dc525d17763642f65a07835a4a2ca462f1a4a 100644 (file)
--- a/drivers/usb/storage/transport.c
+++ b/drivers/usb/storage/transport.c
@@ -961,7 +961,7 @@ int usb_stor_Bulk_max_lun(struct us_data *us)
                                 US_BULK_GET_MAX_LUN, 
                                 USB_DIR_IN | USB_TYPE_CLASS | 
                                 USB_RECIP_INTERFACE,
-                                0, us->ifnum, us->iobuf, 1, HZ);
+                                0, us->ifnum, us->iobuf, 1, 10*HZ);
 
        US_DEBUGP("GetMaxLUN command result is %d, data is %d\n", 
                  result, us->iobuf[0]);