From: Greg Kroah-Hartman <greg@kroah.com>
Date: Mon, 8 Dec 2003 05:58:14 +0000 (-0800)
Subject: [PATCH] USB: fix race with hub devices disconnecting while stuff is still happening... 
X-Git-Tag: v2.6.0~15
X-Git-Url: http://git.neil.brown.name/?a=commitdiff_plain;h=830a91c95e5c62d8d9be53d37fa63b8f73371265;p=history.git

[PATCH] USB: fix race with hub devices disconnecting while stuff is still happening to them.
---

diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index dc12ba0c9722..f665eadd35e7 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -692,6 +692,9 @@ static int hub_port_status(struct usb_device *dev, int port,
 	struct usb_hub *hub = usb_get_intfdata(dev->actconfig->interface[0]);
 	int ret;
 
+	if (!hub)
+		return -ENODEV;
+
 	ret = get_port_status(dev, port + 1, &hub->status->port);
 	if (ret < 0)
 		dev_err (hubdev (dev),