On 04/14/2011 05:31 PM, Alan Stern wrote:
On Wed, 13 Apr 2011 gregkh@xxxxxxx wrote:
From 806e8f8fcc27e1753947bd9f059ba2316cf8f92a Mon Sep 17 00:00:00 2001
From: Mian Yousaf Kaukab<mian.yousaf.kaukab@xxxxxxxxxxxxxx>
Date: Thu, 24 Mar 2011 12:20:13 +0100
Subject: usb: usb_storage: do not align length of request for CBW to maxp size
The necessity for this patch has been under discussion.
It turns out the UDC that Mian has been working on and Felipe's UDC
have contradictory requirements. Mian's UDC driver wants a bulk-OUT
transfer length to be shorter than the maxpacket size if a short packet
is expected, whereas Felipe's UDC hardware always needs bulk-OUT
transfer lengths to be evenly divisible by the maxpacket size.
Mian has agreed to go back over the driver to resolve this conflict.
This means we probably will not want this patch after all. (In fact,
we may ultimately decide to change the gadget framework to require that
bulk-OUT transfer lengths _always_ be divisible by the maxpacket size
-- only the g_file_storage and g_mass_storage gadgets would need to be
changed.)
Mian, should Greg revert this patch now? I think we will want to
revert it eventually...
Yes sure. Greg please drop this one.
Alan Stern
Thanks,
--
Mian Yousaf Kaukab
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