From: Robert Baldyga <r.baldyga@samsung.com>
Date: Fri, 6 Dec 2013 12:03:45 +0000 (+0100)
Subject: usb: gadget: s3c-hsotg: add flush TX FIFO when kill all requests
X-Git-Tag: v3.14-rc1~148^2~90^2~64
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b963a81a4803fb387d6551ea0fb66876e0c8ff12;p=pandora-kernel.git

usb: gadget: s3c-hsotg: add flush TX FIFO when kill all requests

This patch adds flushing TX FIFO in kill_all_requests() function in
dedicated-fifo mode. It's because when requests are killed (when endpoint is
disabled or in case of device reset/disconnection) in FIFO can stay some
unsent data. In the worst case FIFO can stay full, and then if endpoint will
be back enabled, sending new data will be impossible.

Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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