media: coda: remove unused instances list

The per-device instance list is unused, remove it.
Signed-off-by: NPhilipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: NHans Verkuil <hansverk@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab+samsung@kernel.org>

drivers/media/platform/coda/coda-common.c

@@ -2215,10 +2215,6 @@ static int coda_open(struct file *file)
 	INIT_LIST_HEAD(&ctx->buffer_meta_list);
 	spin_lock_init(&ctx->buffer_meta_lock);
 
-	mutex_lock(&dev->dev_mutex);
-	list_add(&ctx->list, &dev->instances);
-	mutex_unlock(&dev->dev_mutex);
-
 	v4l2_dbg(1, coda_debug, &dev->v4l2_dev, "Created instance %d (%p)\n",
 		 ctx->idx, ctx);
 
@@ -2265,10 +2261,6 @@ static int coda_release(struct file *file)
 		flush_work(&ctx->seq_end_work);
 	}
 
-	mutex_lock(&dev->dev_mutex);
-	list_del(&ctx->list);
-	mutex_unlock(&dev->dev_mutex);
-
 	if (ctx->dev->devtype->product == CODA_DX6)
 		coda_free_aux_buf(dev, &ctx->workbuf);
 
@@ -2673,7 +2665,6 @@ static int coda_probe(struct platform_device *pdev)
 		return -EINVAL;
 
 	spin_lock_init(&dev->irqlock);
-	INIT_LIST_HEAD(&dev->instances);
 
 	dev->plat_dev = pdev;
 	dev->clk_per = devm_clk_get(&pdev->dev, "per");

drivers/media/platform/coda/coda.h

@@ -95,7 +95,6 @@ struct coda_dev {
 	struct mutex		coda_mutex;
 	struct workqueue_struct	*workqueue;
 	struct v4l2_m2m_dev	*m2m_dev;
-	struct list_head	instances;
 	struct ida		ida;
 	struct dentry		*debugfs_root;
 };
@@ -193,7 +192,6 @@ struct coda_context_ops {
 struct coda_ctx {
 	struct coda_dev			*dev;
 	struct mutex			buffer_mutex;
-	struct list_head		list;
 	struct work_struct		pic_run_work;
 	struct work_struct		seq_end_work;
 	struct completion		completion;