From: Nicolas Ferre <nicolas.ferre@atmel.com>
Date: Wed, 9 May 2012 08:48:54 +0000 (+0200)
Subject: USB: ohci-at91: add a reset function to fix race condition
X-Git-Tag: v3.2.19~65
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=34a13f5fbe1c95e7536296d4583269c317b0d275;p=pandora-kernel.git

USB: ohci-at91: add a reset function to fix race condition

commit 07e4e556eff4938eb2edf2591de3aa7d7fb82b52 upstream.

A possible race condition appears because we are not initializing
the ohci->regs before calling usb_hcd_request_irqs().
We move the call to ohci_init() in hcd->driver->reset() instead of
hcd->driver->start() to fix this.
This was experienced when we share the same IRQ line between OHCI and EHCI
controllers.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Tested-by: Christian Eggers <christian.eggers@kathrein.de>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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