drivers/pcmcia/soc_common.c: convert soc_pcmcia_sockets_lock into a mutex and make it static

Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

drivers/pcmcia/soc_common.c

@@ -37,6 +37,7 @@
 #include <linux/kernel.h>
 #include <linux/timer.h>
 #include <linux/mm.h>
+#include <linux/mutex.h>
 #include <linux/interrupt.h>
 #include <linux/irq.h>
 #include <linux/spinlock.h>
@@ -578,7 +579,7 @@ EXPORT_SYMBOL(soc_pcmcia_enable_irqs);
 
 
 LIST_HEAD(soc_pcmcia_sockets);
-DECLARE_MUTEX(soc_pcmcia_sockets_lock);
+static DEFINE_MUTEX(soc_pcmcia_sockets_lock);
 
 static const char *skt_names[] = {
 	"PCMCIA socket 0",
@@ -601,11 +602,11 @@ soc_pcmcia_notifier(struct notifier_block *nb, unsigned long val, void *data)
 	struct cpufreq_freqs *freqs = data;
 	int ret = 0;
 
-	down(&soc_pcmcia_sockets_lock);
+	mutex_lock(&soc_pcmcia_sockets_lock);
 	list_for_each_entry(skt, &soc_pcmcia_sockets, node)
 		if ( skt->ops->frequency_change )
 			ret += skt->ops->frequency_change(skt, val, freqs);
-	up(&soc_pcmcia_sockets_lock);
+	mutex_unlock(&soc_pcmcia_sockets_lock);
 
 	return ret;
 }
@@ -642,7 +643,7 @@ int soc_common_drv_pcmcia_probe(struct device *dev, struct pcmcia_low_level *ops
 	struct soc_pcmcia_socket *skt;
 	int ret, i;
 
-	down(&soc_pcmcia_sockets_lock);
+	mutex_lock(&soc_pcmcia_sockets_lock);
 
 	sinfo = kzalloc(SKT_DEV_INFO_SIZE(nr), GFP_KERNEL);
 	if (!sinfo) {
@@ -782,7 +783,7 @@ int soc_common_drv_pcmcia_probe(struct device *dev, struct pcmcia_low_level *ops
 	kfree(sinfo);
 
  out:
-	up(&soc_pcmcia_sockets_lock);
+	mutex_unlock(&soc_pcmcia_sockets_lock);
 	return ret;
 }
 
@@ -793,7 +794,7 @@ int soc_common_drv_pcmcia_remove(struct device *dev)
 
 	dev_set_drvdata(dev, NULL);
 
-	down(&soc_pcmcia_sockets_lock);
+	mutex_lock(&soc_pcmcia_sockets_lock);
 	for (i = 0; i < sinfo->nskt; i++) {
 		struct soc_pcmcia_socket *skt = &sinfo->skt[i];
 
@@ -818,7 +819,7 @@ int soc_common_drv_pcmcia_remove(struct device *dev)
 	if (list_empty(&soc_pcmcia_sockets))
 		soc_pcmcia_cpufreq_unregister();
 
-	up(&soc_pcmcia_sockets_lock);
+	mutex_unlock(&soc_pcmcia_sockets_lock);
 
 	kfree(sinfo);
 

drivers/pcmcia/soc_common.h

@@ -133,7 +133,6 @@ extern void soc_common_pcmcia_get_timing(struct soc_pcmcia_socket *, struct soc_
 
 
 extern struct list_head soc_pcmcia_sockets;
-extern struct semaphore soc_pcmcia_sockets_lock;
 
 extern int soc_common_drv_pcmcia_probe(struct device *dev, struct pcmcia_low_level *ops, int first, int nr);
 extern int soc_common_drv_pcmcia_remove(struct device *dev);