linux-kernel - [RESEND PATCH 14/25] media: i2c: hi556: simplify getting state container

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Message-Id: <20201029164239.84240-14-krzk@kernel.org>
Date:   Thu, 29 Oct 2020 17:42:28 +0100
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Pavel Machek <pavel@....cz>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Tianshu Qiu <tian.shu.qiu@...el.com>,
        Dongchun Zhu <dongchun.zhu@...iatek.com>,
        Shawn Tu <shawnx.tu@...el.com>,
        Ricardo Ribalda <ribalda@...nel.org>,
        Dave Stevenson <dave.stevenson@...pberrypi.com>,
        Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
        Bingbu Cao <bingbu.cao@...el.com>,
        Rui Miguel Silva <rmfrfs@...il.com>,
        Shunqian Zheng <zhengsq@...k-chips.com>,
        Chiranjeevi Rapolu <chiranjeevi.rapolu@...el.com>,
        Hyungwoo Yang <hyungwoo.yang@...el.com>,
        Wenyou Yang <wenyou.yang@...rochip.com>,
        Hans Verkuil <hverkuil-cisco@...all.nl>,
        linux-media@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Krzysztof Kozlowski <krzk@...nel.org>
Subject: [RESEND PATCH 14/25] media: i2c: hi556: simplify getting state container

The pointer to 'struct v4l2_subdev' is stored in drvdata via
v4l2_i2c_subdev_init() so there is no point of a dance like:

    struct i2c_client *client = to_i2c_client(struct device *dev)
    struct v4l2_subdev *sd = i2c_get_clientdata(client);

This allows to remove local variable 'client' and few pointer
dereferences.

Signed-off-by: Krzysztof Kozlowski <krzk@...nel.org>
---
 drivers/media/i2c/hi556.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/media/i2c/hi556.c b/drivers/media/i2c/hi556.c
index c66cd1446c0f..c74736845d7a 100644
--- a/drivers/media/i2c/hi556.c
+++ b/drivers/media/i2c/hi556.c
@@ -839,8 +839,7 @@ static int hi556_set_stream(struct v4l2_subdev *sd, int enable)
 
 static int __maybe_unused hi556_suspend(struct device *dev)
 {
-	struct i2c_client *client = to_i2c_client(dev);
-	struct v4l2_subdev *sd = i2c_get_clientdata(client);
+	struct v4l2_subdev *sd = dev_get_drvdata(dev);
 	struct hi556 *hi556 = to_hi556(sd);
 
 	mutex_lock(&hi556->mutex);
@@ -854,8 +853,7 @@ static int __maybe_unused hi556_suspend(struct device *dev)
 
 static int __maybe_unused hi556_resume(struct device *dev)
 {
-	struct i2c_client *client = to_i2c_client(dev);
-	struct v4l2_subdev *sd = i2c_get_clientdata(client);
+	struct v4l2_subdev *sd = dev_get_drvdata(dev);
 	struct hi556 *hi556 = to_hi556(sd);
 	int ret;
 
-- 
2.25.1