MBCS: Convert the semaphore algolock to the mutex API
Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com>
--- kernel.orig/linux-2.6/drivers/char/mbcs.c 2007-10-23 17:37:56.000000000 +0200
+++ kernel/linux-2.6/drivers/char/mbcs.c 2007-10-23 17:40:16.000000000 +0200
@@ -24,6 +24,7 @@
#include <linux/mm.h>
#include <linux/fs.h>
#include <linux/uio.h>
+#include <linux/mutex.h>
#include <asm/io.h>
#include <asm/uaccess.h>
#include <asm/system.h>
@@ -282,7 +283,7 @@
void *mmr_base = soft->mmr_base;
union cm_control cm_control;
- if (down_interruptible(&soft->algolock))
+ if (mutex_lock_interruptible(&soft->algolock))
return -ERESTARTSYS;
atomic_set(&soft->algo_done, 0);
@@ -299,7 +300,7 @@
cm_control.alg_go = 1;
MBCS_MMR_SET(mmr_base, MBCS_CM_CONTROL, cm_control.cm_control_reg);
- up(&soft->algolock);
+ mutex_unlock(&soft->algolock);
return 0;
}
@@ -765,7 +766,7 @@
init_MUTEX(&soft->dmawritelock);
init_MUTEX(&soft->dmareadlock);
- init_MUTEX(&soft->algolock);
+ mutex_init(&soft->algolock);
mbcs_getdma_init(&soft->getdma);
mbcs_putdma_init(&soft->putdma);
Index: kernel/linux-2.6/drivers/char/mbcs.h
===================================================================
--- kernel.orig/linux-2.6/drivers/char/mbcs.h 2007-10-23 17:38:55.000000000 +0200
+++ kernel/linux-2.6/drivers/char/mbcs.h 2007-10-23 17:39:51.000000000 +0200
@@ -539,7 +539,7 @@
atomic_t algo_done;
struct semaphore dmawritelock;
struct semaphore dmareadlock;
- struct semaphore algolock;
+ struct mutex algolock;
};
static int mbcs_open(struct inode *ip, struct file *fp);
--
Matthias Kaehlcke
Linux Application Developer
Barcelona
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