[PATCH] isdn4linux: Siemens Gigaset drivers: mutex conversion

With Hansjoerg Lipp <hjlipp@web.de>

Convert the semaphores used by the Gigaset drivers to mutexes.

Signed-off-by: Hansjoerg Lipp <hjlipp@web.de>
Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Cc: Karsten Keil <kkeil@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 3 insertions, 3 deletions

diff --git a/drivers/isdn/gigaset/proc.c b/drivers/isdn/gigaset/proc.c
index 912fed670742..8f124e8e604b 100644
--- a/drivers/isdn/gigaset/proc.c
+++ b/drivers/isdn/gigaset/proc.c
@@ -37,14 +37,14 @@ static ssize_t set_cidmode(struct device *dev, struct device_attribute *attr,
         if (value < 0 || value > 1)
                         return -EINVAL;
 
-        if (down_interruptible(&cs->sem))
+        if (mutex_lock_interruptible(&cs->mutex))
                 return -ERESTARTSYS; // FIXME -EINTR?
 
         cs->waiting = 1;
         if (!gigaset_add_event(cs, &cs->at_state, EV_PROC_CIDMODE,
                                NULL, value, NULL)) {
                 cs->waiting = 0;
-                up(&cs->sem);
+                mutex_unlock(&cs->mutex);
                 return -ENOMEM;
         }
 
@@ -53,7 +53,7 @@ static ssize_t set_cidmode(struct device *dev, struct device_attribute *attr,
 
         wait_event(cs->waitqueue, !cs->waiting);
 
-        up(&cs->sem);
+        mutex_unlock(&cs->mutex);
 
         return count;
 }