Merge tag 'media/v4.15-1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media updates from Mauro Carvalho Chehab:

 - Documentation for digital TV (both kAPI and uAPI) are now in sync
   with the implementation (except for legacy/deprecated ioctls). This
   is a major step, as there were always a gap there

 - New sensor driver: imx274

 - New cec driver: cec-gpio

 - New platform driver for rockship rga and tegra CEC

 - New RC driver: tango-ir

 - Several cleanups at atomisp driver

 - Core improvements for RC, CEC, V4L2 async probing support and DVB

 - Lots of drivers cleanup, fixes and improvements.

* tag 'media/v4.15-1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (332 commits)
  dvb_frontend: don't use-after-free the frontend struct
  media: dib0700: fix invalid dvb_detach argument
  media: v4l2-ctrls: Don't validate BITMASK twice
  media: s5p-mfc: fix lockdep warning
  media: dvb-core: always call invoke_release() in fe_free()
  media: usb: dvb-usb-v2: dvb_usb_core: remove redundant code in dvb_usb_fe_sleep
  media: au0828: make const array addr_list static
  media: cx88: make const arrays default_addr_list and pvr2000_addr_list static
  media: drxd: make const array fastIncrDecLUT static
  media: usb: fix spelling mistake: "synchronuously" -> "synchronously"
  media: ddbridge: fix build warnings
  media: av7110: avoid 2038 overflow in debug print
  media: Don't do DMA on stack for firmware upload in the AS102 driver
  media: v4l: async: fix unregister for implicitly registered sub-device notifiers
  media: v4l: async: fix return of unitialized variable ret
  media: imx274: fix missing return assignment from call to imx274_mode_regs
  media: camss-vfe: always initialize reg at vfe_set_xbar_cfg()
  media: atomisp: make function calls cleaner
  media: atomisp: get rid of storage_class.h
  media: atomisp: get rid of wrong stddef.h include
  ...

1 files changed, 12 insertions, 12 deletions

diff --git a/drivers/media/platform/atmel/atmel-isi.c b/drivers/media/platform/atmel/atmel-isi.c
index 891fa2505efa..e900995143a3 100644
--- a/drivers/media/platform/atmel/atmel-isi.c
+++ b/drivers/media/platform/atmel/atmel-isi.c
@@ -411,7 +411,7 @@ static void buffer_queue(struct vb2_buffer *vb)
 	spin_lock_irqsave(&isi->irqlock, flags);
 	list_add_tail(&buf->list, &isi->video_buffer_list);
 
-	if (isi->active == NULL) {
+	if (!isi->active) {
 		isi->active = buf;
 		if (vb2_is_streaming(vb->vb2_queue))
 			start_dma(isi, buf);
@@ -1038,10 +1038,8 @@ static int isi_formats_init(struct atmel_isi *isi)
 	isi->user_formats = devm_kcalloc(isi->dev,
 					 num_fmts, sizeof(struct isi_format *),
 					 GFP_KERNEL);
-	if (!isi->user_formats) {
-		dev_err(isi->dev, "could not allocate memory\n");
+	if (!isi->user_formats)
 		return -ENOMEM;
-	}
 
 	memcpy(isi->user_formats, isi_fmts,
 	       num_fmts * sizeof(struct isi_format *));
@@ -1105,6 +1103,12 @@ static int isi_graph_notify_bound(struct v4l2_async_notifier *notifier,
 	return 0;
 }
 
+static const struct v4l2_async_notifier_operations isi_graph_notify_ops = {
+	.bound = isi_graph_notify_bound,
+	.unbind = isi_graph_notify_unbind,
+	.complete = isi_graph_notify_complete,
+};
+
 static int isi_graph_parse(struct atmel_isi *isi, struct device_node *node)
 {
 	struct device_node *ep = NULL;
@@ -1143,7 +1147,7 @@ static int isi_graph_init(struct atmel_isi *isi)
 
 	/* Register the subdevices notifier. */
 	subdevs = devm_kzalloc(isi->dev, sizeof(*subdevs), GFP_KERNEL);
-	if (subdevs == NULL) {
+	if (!subdevs) {
 		of_node_put(isi->entity.node);
 		return -ENOMEM;
 	}
@@ -1152,9 +1156,7 @@ static int isi_graph_init(struct atmel_isi *isi)
 
 	isi->notifier.subdevs = subdevs;
 	isi->notifier.num_subdevs = 1;
-	isi->notifier.bound = isi_graph_notify_bound;
-	isi->notifier.unbind = isi_graph_notify_unbind;
-	isi->notifier.complete = isi_graph_notify_complete;
+	isi->notifier.ops = &isi_graph_notify_ops;
 
 	ret = v4l2_async_notifier_register(&isi->v4l2_dev, &isi->notifier);
 	if (ret < 0) {
@@ -1176,10 +1178,8 @@ static int atmel_isi_probe(struct platform_device *pdev)
 	int ret, i;
 
 	isi = devm_kzalloc(&pdev->dev, sizeof(struct atmel_isi), GFP_KERNEL);
-	if (!isi) {
-		dev_err(&pdev->dev, "Can't allocate interface!\n");
+	if (!isi)
 		return -ENOMEM;
-	}
 
 	isi->pclk = devm_clk_get(&pdev->dev, "isi_clk");
 	if (IS_ERR(isi->pclk))
@@ -1204,7 +1204,7 @@ static int atmel_isi_probe(struct platform_device *pdev)
 		return ret;
 
 	isi->vdev = video_device_alloc();
-	if (isi->vdev == NULL) {
+	if (!isi->vdev) {
 		ret = -ENOMEM;
 		goto err_vdev_alloc;
 	}