Commit 7a777919 authored Jul 13, 2009 by Giacomo Lozito Committed by Greg Kroah-Hartman Jul 28, 2009

USB: storage: raise timeout in usb_stor_Bulk_max_lun



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>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

parent 5f4fab91

drivers/usb/storage/transport.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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]);