[PATCH] pcmcia: start over after CIS override

When overriding the CIS, re-start the configuration of the card from
scratch. Reported and debugged by Fabrice Bellet <fabrice@bellet.info>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>

drivers/pcmcia/cs_internal.h

@@ -135,7 +135,7 @@ int pccard_get_status(struct pcmcia_socket *s, struct pcmcia_device *p_dev, cs_s
 struct pcmcia_callback{
 	struct module	*owner;
 	int		(*event) (struct pcmcia_socket *s, event_t event, int priority);
-	void		(*requery) (struct pcmcia_socket *s);
+	void		(*requery) (struct pcmcia_socket *s, int new_cis);
 	int		(*suspend) (struct pcmcia_socket *s);
 	int		(*resume) (struct pcmcia_socket *s);
 };

drivers/pcmcia/ds.c

@@ -714,22 +714,26 @@ static int pcmcia_requery(struct device *dev, void * _data)
 	return 0;
 }
 
-static void pcmcia_bus_rescan(struct pcmcia_socket *skt)
+static void pcmcia_bus_rescan(struct pcmcia_socket *skt, int new_cis)
 {
-	int no_devices=0;
+	int no_devices = 0;
 	int ret = 0;
 	unsigned long flags;
 
 	/* must be called with skt_mutex held */
 	spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
 	if (list_empty(&skt->devices_list))
-		no_devices=1;
+		no_devices = 1;
 	spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
 
+	/* If this is because of a CIS override, start over */
+	if (new_cis && !no_devices)
+		pcmcia_card_remove(skt, NULL);
+
 	/* if no devices were added for this socket yet because of
 	 * missing resource information or other trouble, we need to
 	 * do this now. */
-	if (no_devices) {
+	if (no_devices || new_cis) {
 		ret = pcmcia_card_add(skt);
 		if (ret)
 			return;

drivers/pcmcia/socket_sysfs.c

@@ -188,7 +188,7 @@ static ssize_t pccard_store_resource(struct class_device *dev, const char *buf,
 	    (s->state & SOCKET_PRESENT) &&
 	    !(s->state & SOCKET_CARDBUS)) {
 		if (try_module_get(s->callback->owner)) {
-			s->callback->requery(s);
+			s->callback->requery(s, 0);
 			module_put(s->callback->owner);
 		}
 	}
@@ -325,7 +325,7 @@ static ssize_t pccard_store_cis(struct kobject *kobj, char *buf, loff_t off, siz
 	if ((s->callback) && (s->state & SOCKET_PRESENT) &&
 	    !(s->state & SOCKET_CARDBUS)) {
 		if (try_module_get(s->callback->owner)) {
-			s->callback->requery(s);
+			s->callback->requery(s, 1);
 			module_put(s->callback->owner);
 		}
 	}