From: Christoph Hellwig <hch@lst.de>
Date: Mon, 23 Apr 2007 19:08:17 +0000 (+0200)
Subject: [POWERPC] spufs: turn run_sema into run_mutex
X-Git-Tag: upstream/snapshot3+hdmi~34947^2~72^2~12
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=e45d48a34d4d1862d28d22c2533b8c6bb83b8c1f;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git

[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
--- 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
--- 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
--- 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;