media: atomisp: Allow sensor drivers without a s_power callback

The s_power callback for v4l2-subdevs has been deprecated, allow sensor
drivers without a s_power callback to work by ignoring the -ENOIOCTLCMD
return value.
Reviewed-by: Andy Shevchenko <andy@kernel.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

drivers/staging/media/atomisp/pci/atomisp_fops.c

@@ -832,7 +832,7 @@ static int atomisp_release(struct file *file)
 	if (isp->inputs[asd->input_curr].asd == asd) {
 		ret = v4l2_subdev_call(isp->inputs[asd->input_curr].camera,
 				       core, s_power, 0);
-		if (ret)
+		if (ret && ret != -ENOIOCTLCMD)
 			dev_warn(isp->dev, "Failed to power-off sensor\n");
 
 		/* clear the asd field to show this camera is not used */

drivers/staging/media/atomisp/pci/atomisp_ioctl.c

@@ -700,7 +700,7 @@ static int atomisp_s_input(struct file *file, void *fh, unsigned int input)
 	    asd->input_curr != input) {
 		ret = v4l2_subdev_call(isp->inputs[asd->input_curr].camera,
 				       core, s_power, 0);
-		if (ret)
+		if (ret && ret != -ENOIOCTLCMD)
 			dev_warn(isp->dev,
 				 "Failed to power-off sensor\n");
 		/* clear the asd field to show this camera is not used */
@@ -709,7 +709,7 @@ static int atomisp_s_input(struct file *file, void *fh, unsigned int input)
 
 	/* powe on the new sensor */
 	ret = v4l2_subdev_call(isp->inputs[input].camera, core, s_power, 1);
-	if (ret) {
+	if (ret && ret != -ENOIOCTLCMD) {
 		dev_err(isp->dev, "Failed to power-on sensor\n");
 		return ret;
 	}