From: Igor Kotrasinski <i.kotrasinsk@samsung.com>
Date: Tue, 15 Sep 2015 14:55:32 +0000 (+0200)
Subject: usb: gadget: dummy_hcd: in transfer(), return data sent, not limit
X-Git-Tag: omap-for-v4.3/fixes-rc5~79^2~11^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9a9ce1dfaef9aa15980cec22b806b39a65a9467e;p=pandora-kernel.git

usb: gadget: dummy_hcd: in transfer(), return data sent, not limit

dummy_timer uses transfer() to update transfer limit. However,
limit passed to dummy_timer changes depending on transfer type,
so the actual limit is overwritten.

This can cause unpredictably slow / fast bulk transfers when
coupled with control / interrupt transfers.

Fix by returning actual amount of data sent in transfer() and
substracting from total.

Signed-off-by: Igor Kotrasinski <i.kotrasinsk@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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