[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>

diff --git a/drivers/usb/net/zd1201.c b/drivers/usb/net/zd1201.c
index eb0bff535b3cfddbeaea0f861b2f16146ca622d8..3b387b005739150dc0de494f726a917b2d2981d0 100644 (file)
--- 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)