use mutex instead of semaphore in isdn subsystem common functions
The ISDN subsystem common functions use a semaphore as mutex. Use the
mutex API instead of the (binary) semaphore.
Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com>
Acked-by: Karsten Keil <kkeil@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/include/linux/isdn.h b/include/linux/isdn.h
index d5dda4b..d0ecc8e 100644
--- a/include/linux/isdn.h
+++ b/include/linux/isdn.h
@@ -167,6 +167,7 @@
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include <linux/tcp.h>
+#include <linux/mutex.h>
#define ISDN_TTY_MAJOR 43
#define ISDN_TTYAUX_MAJOR 44
@@ -616,7 +617,7 @@
int v110emu[ISDN_MAX_CHANNELS]; /* V.110 emulator-mode 0=none */
atomic_t v110use[ISDN_MAX_CHANNELS]; /* Usage-Semaphore for stream */
isdn_v110_stream *v110[ISDN_MAX_CHANNELS]; /* V.110 private data */
- struct semaphore sem; /* serialize list access*/
+ struct mutex mtx; /* serialize list access*/
unsigned long global_features;
} isdn_dev;