[PATCH] pcmcia: use mutexes instead of semaphores

Use mutexes in the PCMICA core, as they suffice for what needs to be done.
Includes a bugfix from and Signed-off-by Andrew Morton.

Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>

1 files changed, 7 insertions, 7 deletions

diff --git a/drivers/pcmcia/ds.c b/drivers/pcmcia/ds.c
index 37ba1246c282..3b7e1ba13c78 100644
--- a/drivers/pcmcia/ds.c
+++ b/drivers/pcmcia/ds.c
@@ -564,7 +564,7 @@ static int pcmcia_device_query(struct pcmcia_device *p_dev)
  * won't work, this doesn't matter much at the moment: the driver core doesn't
  * support it either.
  */
-static DECLARE_MUTEX(device_add_lock);
+static DEFINE_MUTEX(device_add_lock);
 
 struct pcmcia_device * pcmcia_device_add(struct pcmcia_socket *s, unsigned int function)
 {
@@ -576,7 +576,7 @@ struct pcmcia_device * pcmcia_device_add(struct pcmcia_socket *s, unsigned int f
         if (!s)
                 return NULL;
 
-        down(&device_add_lock);
+        mutex_lock(&device_add_lock);
 
         /* max of 2 devices per card */
         if (s->device_count == 2)
@@ -640,7 +640,7 @@ struct pcmcia_device * pcmcia_device_add(struct pcmcia_socket *s, unsigned int f
         if (device_register(&p_dev->dev))
                 goto err_unreg;
 
-        up(&device_add_lock);
+        mutex_unlock(&device_add_lock);
 
         return p_dev;
 
@@ -654,7 +654,7 @@ struct pcmcia_device * pcmcia_device_add(struct pcmcia_socket *s, unsigned int f
         kfree(p_dev);
         s->device_count--;
  err_put:
-        up(&device_add_lock);
+        mutex_unlock(&device_add_lock);
         pcmcia_put_socket(s);
 
         return NULL;
@@ -713,7 +713,7 @@ static void pcmcia_bus_rescan(struct pcmcia_socket *skt)
         int no_devices=0;
         unsigned long flags;
 
-        /* must be called with skt_sem held */
+        /* must be called with skt_mutex held */
         spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
         if (list_empty(&skt->devices_list))
                 no_devices=1;
@@ -999,9 +999,9 @@ static ssize_t pcmcia_store_allow_func_id_match(struct device *dev,
         if (!count)
                 return -EINVAL;
 
-        down(&p_dev->socket->skt_sem);
+        mutex_lock(&p_dev->socket->skt_mutex);
         p_dev->allow_func_id_match = 1;
-        up(&p_dev->socket->skt_sem);
+        mutex_unlock(&p_dev->socket->skt_mutex);
 
         bus_rescan_devices(&pcmcia_bus_type);