From: Alan Stern <stern@rowland.harvard.edu>
Date: Wed, 18 Apr 2012 15:33:00 +0000 (-0400)
Subject: EHCI: always clear the STS_FLR status bit
X-Git-Tag: v3.2.17~139
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=03668ebf38dcb0add8c2e55f1c6f02dcd4f16494;p=pandora-kernel.git

EHCI: always clear the STS_FLR status bit

commit 2fbe2bf1fd37f9d99950bd8d8093623cf22cf08b upstream.

This patch (as1544) fixes a problem affecting some EHCI controllers.
They can generate interrupts whenever the STS_FLR status bit is turned
on, even though that bit is masked out in the Interrupt Enable
register.

Since the driver doesn't use STS_FLR anyway, the patch changes the
interrupt routine to clear that bit whenever it is set, rather than
leaving it alone.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-and-tested-by: Tomoya MORINAGA <tomoya.rohm@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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