From: Grazvydas Ignotas <notasas@gmail.com>
Date: Sat, 4 Jul 2015 20:51:00 +0000 (+0300)
Subject: usb: musb: clear MUSB_INTR_SOF
X-Git-Tag: sz_173~11
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=621367ef474da0e2ec390abbb2251ba192e2312c;p=pandora-kernel.git

usb: musb: clear MUSB_INTR_SOF

MUSB_INTR_SOF is always masked, but still shows up in status register
and causes musb_stage0_irq() to be called needlessly, then work to be
scheduled at the end of musb_stage0_irq(), and that doubles context
switch count.
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