[PATCH] fix pcmcia_device_probe oops

[Hugh Dickins <hugh@veritas.com>]

Fix pcmcia_device_probe NULL pointer dereference at startup.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
---
This oops was in -mm for a long time, sorry, I never got around to
investigating it then; but now it has graduated to mainline -rc5-git.
It may well be a consequence of my ignoring pcmcia's "please expect
breakage unless you upgrade to new tools" - but I think this is not a
permissible kind of breakage, and my cards work as before with the fix.

 drivers/pcmcia/ds.c |    2 +-
 1 files changed, 1 insertion(+), 1 deletion(-)

--- 2.6.16-rc5-git14/drivers/pcmcia/ds.c	2006-03-10 10:07:30.000000000 +0000
+++ linux/drivers/pcmcia/ds.c	2006-03-10 17:16:27.000000000 +0000
@@ -411,7 +411,7 @@ static int pcmcia_device_probe(struct de
 	 * pseudo devices, and if not, add the second one.
 	 */
 	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 == 1) && (p_dev->device_no == 0))
 		pcmcia_add_pseudo_device(p_dev->socket);