[POWERPC] spufs: turn run_sema into run_mutex

There is no reason for run_sema to be a struct semaphore.  Changing
it to a mutex and rename it accordingly.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>

diff --git a/arch/powerpc/platforms/cell/spufs/context.c b/arch/powerpc/platforms/cell/spufs/context.c
index ce17a28..a87d9ca 100644 (file)
--- a/arch/powerpc/platforms/cell/spufs/context.c
+++ b/arch/powerpc/platforms/cell/spufs/context.c
@@ -44,7 +44,7 @@ struct spu_context *alloc_spu_context(struct spu_gang *gang)
        spin_lock_init(&ctx->mapping_lock);
        kref_init(&ctx->kref);
        mutex_init(&ctx->state_mutex);
-       init_MUTEX(&ctx->run_sema);
+       mutex_init(&ctx->run_mutex);
        init_waitqueue_head(&ctx->ibox_wq);
        init_waitqueue_head(&ctx->wbox_wq);
        init_waitqueue_head(&ctx->stop_wq);

diff --git a/arch/powerpc/platforms/cell/spufs/run.c b/arch/powerpc/platforms/cell/spufs/run.c
index 1a8195b..7cf5b29 100644 (file)
--- a/arch/powerpc/platforms/cell/spufs/run.c
+++ b/arch/powerpc/platforms/cell/spufs/run.c
@@ -288,7 +288,7 @@ long spufs_run_spu(struct file *file, struct spu_context *ctx,
        int ret;
        u32 status;
 
-       if (down_interruptible(&ctx->run_sema))
+       if (mutex_lock_interruptible(&ctx->run_mutex))
                return -ERESTARTSYS;
 
        ctx->ops->master_start(ctx);
@@ -345,6 +345,6 @@ out2:
 
 out:
        *event = ctx->event_return;
-       up(&ctx->run_sema);
+       mutex_unlock(&ctx->run_mutex);
        return ret;
 }

diff --git a/arch/powerpc/platforms/cell/spufs/spufs.h b/arch/powerpc/platforms/cell/spufs/spufs.h
index 9993c9b..dd5fc64 100644 (file)
--- a/arch/powerpc/platforms/cell/spufs/spufs.h
+++ b/arch/powerpc/platforms/cell/spufs/spufs.h
@@ -60,7 +60,7 @@ struct spu_context {
 
        enum { SPU_STATE_RUNNABLE, SPU_STATE_SAVED } state;
        struct mutex state_mutex;
-       struct semaphore run_sema;
+       struct mutex run_mutex;
 
        struct mm_struct *owner;