pcmcia: give socket time to power down

Give sockets up to 100ms of additional time to power down.  otherwise we
might generate false warnings with KERN_ERR priority (like in bug #8262).
Signed-off-by: NDaniel Ritz <daniel.ritz@gmx.ch>
Cc: Nils Neumann <nils.neumann@rwth-aachen.de>
Cc: <stable@kernel.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

drivers/pcmcia/cs.c

@@ -409,6 +409,9 @@ static void socket_shutdown(struct pcmcia_socket *s)
 #endif
 	s->functions = 0;
 
+	/* give socket some time to power down */
+	msleep(100);
+
 	s->ops->get_status(s, &status);
 	if (status & SS_POWERON) {
 		printk(KERN_ERR "PCMCIA: socket %p: *** DANGER *** unable to remove socket power\n", s);