Commit 4f053a24 authored Oct 16, 2012 by Kuninori Morimoto Committed by Felipe Balbi Oct 23, 2012

usb: renesas_usbhs: fixup: avoid NULL access on error case pipe detach



If renesas_usbhs or DMAEngine interrupt didn't happen by a certain cause,
urb->ep will be NULL by usb time out.
Then, host mode will access to it and crash kernel.
This patch fixes it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

parent 000b7f51

drivers/usb/renesas_usbhs/mod_host.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -334,6 +334,11 @@ static void usbhsh_pipe_detach(struct usbhsh_hpriv *hpriv,
		struct device *dev = usbhs_priv_to_dev(priv);
		unsigned long flags;

		if (unlikely(!uep)) {
		dev_err(dev, "no uep\n");
		return;
		}

		/****************** spin lock ******************/
		usbhs_lock(priv, flags);