usb: gadget: udc: renesas_usb3: fix deadlock by spinlock
authorYoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Wed, 26 Apr 2017 11:50:08 +0000 (20:50 +0900)
committerFelipe Balbi <felipe.balbi@linux.intel.com>
Fri, 2 Jun 2017 09:44:55 +0000 (12:44 +0300)
commit067d6fdc558d2c43f0bfdc7af99630dd5eb08dc5
treed7d608ee2780faa58190410174d28cbeaab0da90
parentcdc876877ebc3f0677b267756d4564e2a429e730
usb: gadget: udc: renesas_usb3: fix deadlock by spinlock

This patch fixes an issue that this driver is possible to cause
deadlock by double-spinclocked in renesas_usb3_stop_controller().
So, this patch removes spinlock API calling in renesas_usb3_stop().
(In other words, the previous code had a redundant lock.)

Fixes: 746bfe63bba3 ("usb: gadget: renesas_usb3: add support for Renesas USB3.0 peripheral controller")
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
drivers/usb/gadget/udc/renesas_usb3.c