staging: r8712u: Fix Smatch warning

The patch 2080913e017a: "staging: r8712u: Fix regression caused by
commit 8c213fa" from Feb 25, 2012, leads to the following Smatch
complaint:

drivers/staging/rtl8712/usb_intf.c:629 r871xu_dev_remove()
	 warn: variable dereferenced before check 'padapter' (see line 625)

The fix is to move the new statements inside the block where padapter
is not NULL.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/rtl8712/usb_intf.c b/drivers/staging/rtl8712/usb_intf.c
index b0c4cdb..e419b4f 100644 (file)
--- a/drivers/staging/rtl8712/usb_intf.c
+++ b/drivers/staging/rtl8712/usb_intf.c
@@ -620,12 +620,12 @@ static void r871xu_dev_remove(struct usb_interface *pusb_intf)
        struct _adapter *padapter = netdev_priv(pnetdev);
        struct usb_device *udev = interface_to_usbdev(pusb_intf);
 
-       if (padapter->fw_found)
-               release_firmware(padapter->fw);
-       /* never exit with a firmware callback pending */
-       wait_for_completion(&padapter->rtl8712_fw_ready);
        usb_set_intfdata(pusb_intf, NULL);
        if (padapter) {
+               if (padapter->fw_found)
+                       release_firmware(padapter->fw);
+               /* never exit with a firmware callback pending */
+               wait_for_completion(&padapter->rtl8712_fw_ready);
                if (drvpriv.drv_registered == true)
                        padapter->bSurpriseRemoved = true;
                if (pnetdev != NULL) {