[PATCH] USB: check for device in zd1201_resume

My patch adding PM support for zd1201 didn't check for the device on
resume, which can oops if the device has been removed.

This patch fixes it.

Signed-off-by: Colin Leroy <colin@colino.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/usb/net/zd1201.c b/drivers/usb/net/zd1201.c
index eb0bff535b3c..3b387b005739 100644
--- a/drivers/usb/net/zd1201.c
+++ b/drivers/usb/net/zd1201.c
@@ -1905,6 +1905,9 @@ static int zd1201_resume(struct usb_interface *interface)
 {
         struct zd1201 *zd = usb_get_intfdata(interface);
 
+        if (!zd || !zd->dev)
+                return -ENODEV;
+
         netif_device_attach(zd->dev);
 
         if (zd->was_enabled)