From: Ming Lei <tom.leiming@xxxxxxxxx> This patch adds BLOCKING_INIT_NOTIFIER_HEAD in nop_usb_xceiv_probe, so that we can avoid oops caused by uninitialized nop->otg.notifier.rwsem which will be touched in otg_register_notifier path. Reported-by: Gupta, Ajay Kumar <ajay.gupta@xxxxxx> Tested-by: Gupta, Ajay Kumar <ajay.gupta@xxxxxx> Cc: Balbi, Felipe <balbi@xxxxxx> Cc: David Brownell <david-b@xxxxxxxxxxx> Signed-off-by: Ming Lei <tom.leiming@xxxxxxxxx> --- drivers/usb/otg/nop-usb-xceiv.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/drivers/usb/otg/nop-usb-xceiv.c b/drivers/usb/otg/nop-usb-xceiv.c index e70014a..8acf165 100644 --- a/drivers/usb/otg/nop-usb-xceiv.c +++ b/drivers/usb/otg/nop-usb-xceiv.c @@ -132,6 +132,8 @@ static int __devinit nop_usb_xceiv_probe(struct platform_device *pdev) platform_set_drvdata(pdev, nop); + BLOCKING_INIT_NOTIFIER_HEAD(&nop->otg.notifier); + return 0; exit: kfree(nop); -- 1.7.3 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
