[PATCH] pcmcia: fix pcmcia_device_remove oops

Fix pcmcia_device_remove NULL pointer dereference at shutdown.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>

diff --git a/drivers/pcmcia/ds.c b/drivers/pcmcia/ds.c
index 8966dd0..ae10d1e 100644 (file)
--- a/drivers/pcmcia/ds.c
+++ b/drivers/pcmcia/ds.c
@@ -464,7 +464,7 @@ static int pcmcia_device_remove(struct device * dev)
         * all devices
         */
        did = (struct pcmcia_device_id *) p_dev->dev.driver_data;
-       if ((did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) &&
+       if (did && (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) &&
            (p_dev->socket->device_count != 0) &&
            (p_dev->device_no == 0))
                pcmcia_card_remove(p_dev->socket, p_dev);