linux-kernel - [PATCH v1 6/6] media: ipu3-cio2: Introduce to_cio2

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Message-Id: <20210713202131.13906-6-andriy.shevchenko@linux.intel.com>
Date:   Tue, 13 Jul 2021 23:21:31 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        linux-media@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Yong Zhi <yong.zhi@...el.com>, Bingbu Cao <bingbu.cao@...el.com>,
        Dan Scally <djrscally@...il.com>,
        Tianshu Qiu <tian.shu.qiu@...el.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>
Subject: [PATCH v1 6/6] media: ipu3-cio2: Introduce to_cio2_device() helper macro

Provide to_cio2_device() helper macro and convert users to make
code easier to read.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/media/pci/intel/ipu3/ipu3-cio2-main.c | 9 +++------
 drivers/media/pci/intel/ipu3/ipu3-cio2.h      | 2 ++
 2 files changed, 5 insertions(+), 6 deletions(-)

diff --git a/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c b/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c
index 3acee7a623c0..88d6dd7d864e 100644
--- a/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c
+++ b/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c
@@ -1376,8 +1376,7 @@ static int cio2_notifier_bound(struct v4l2_async_notifier *notifier,
 			       struct v4l2_subdev *sd,
 			       struct v4l2_async_subdev *asd)
 {
-	struct cio2_device *cio2 = container_of(notifier,
-					struct cio2_device, notifier);
+	struct cio2_device *cio2 = to_cio2_device(notifier);
 	struct sensor_async_subdev *s_asd = to_sensor_asd(asd);
 	struct cio2_queue *q;
 
@@ -1398,8 +1397,7 @@ static void cio2_notifier_unbind(struct v4l2_async_notifier *notifier,
 				 struct v4l2_subdev *sd,
 				 struct v4l2_async_subdev *asd)
 {
-	struct cio2_device *cio2 = container_of(notifier,
-						struct cio2_device, notifier);
+	struct cio2_device *cio2 = to_cio2_device(notifier);
 	struct sensor_async_subdev *s_asd = to_sensor_asd(asd);
 
 	cio2->queue[s_asd->csi2.port].sensor = NULL;
@@ -1408,8 +1406,7 @@ static void cio2_notifier_unbind(struct v4l2_async_notifier *notifier,
 /* .complete() is called after all subdevices have been located */
 static int cio2_notifier_complete(struct v4l2_async_notifier *notifier)
 {
-	struct cio2_device *cio2 = container_of(notifier, struct cio2_device,
-						notifier);
+	struct cio2_device *cio2 = to_cio2_device(notifier);
 	struct device *dev = &cio2->pci_dev->dev;
 	struct sensor_async_subdev *s_asd;
 	struct v4l2_async_subdev *asd;
diff --git a/drivers/media/pci/intel/ipu3/ipu3-cio2.h b/drivers/media/pci/intel/ipu3/ipu3-cio2.h
index f82f9b2590b9..3a1f394e05aa 100644
--- a/drivers/media/pci/intel/ipu3/ipu3-cio2.h
+++ b/drivers/media/pci/intel/ipu3/ipu3-cio2.h
@@ -401,6 +401,8 @@ struct cio2_device {
 	dma_addr_t dummy_lop_bus_addr;
 };
 
+#define to_cio2_device(n)	container_of(n, struct cio2_device, notifier)
+
 /**************** Virtual channel ****************/
 /*
  * This should come from sensor driver. No
-- 
2.30.2