linux-kernel - Re: [PATCH 3/8] [media] core: Don't use i2c

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Message-ID: <52497360.2040808@xs4all.nl>
Date:	Mon, 30 Sep 2013 14:49:36 +0200
From:	Hans Verkuil <hverkuil@...all.nl>
To:	Lars-Peter Clausen <lars@...afoo.de>
CC:	Wolfram Sang <wsa@...-dreams.de>, David Airlie <airlied@...ux.ie>,
	Mauro Carvalho Chehab <m.chehab@...sung.com>,
	Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.de>,
	Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>, linux-kernel@...r.kernel.org,
	linux-i2c@...r.kernel.org, dri-devel@...ts.freedesktop.org,
	linux-media@...r.kernel.org, alsa-devel@...a-project.org
Subject: Re: [PATCH 3/8] [media] core: Don't use i2c_client->driver

On 09/29/2013 10:51 AM, Lars-Peter Clausen wrote:
> The 'driver' field of the i2c_client struct is redundant and is going to be
> removed. The results of the expressions 'client->driver.driver->field' and
> 'client->dev.driver->field' are identical, so replace all occurrences of the
> former with the later.
> 
> Signed-off-by: Lars-Peter Clausen <lars@...afoo.de>

Acked-by: Hans Verkuil <hans.verkuil@...co.com>

Regards,

	Hans

> ---
>  drivers/media/v4l2-core/tuner-core.c  |  6 +++---
>  drivers/media/v4l2-core/v4l2-common.c | 10 +++++-----
>  include/media/v4l2-common.h           |  2 +-
>  3 files changed, 9 insertions(+), 9 deletions(-)
> 
> diff --git a/drivers/media/v4l2-core/tuner-core.c b/drivers/media/v4l2-core/tuner-core.c
> index ddc9379..4133af0 100644
> --- a/drivers/media/v4l2-core/tuner-core.c
> +++ b/drivers/media/v4l2-core/tuner-core.c
> @@ -43,7 +43,7 @@
>  
>  #define UNSET (-1U)
>  
> -#define PREFIX (t->i2c->driver->driver.name)
> +#define PREFIX (t->i2c->dev.driver->name)
>  
>  /*
>   * Driver modprobe parameters
> @@ -452,7 +452,7 @@ static void set_type(struct i2c_client *c, unsigned int type,
>  	}
>  
>  	tuner_dbg("%s %s I2C addr 0x%02x with type %d used for 0x%02x\n",
> -		  c->adapter->name, c->driver->driver.name, c->addr << 1, type,
> +		  c->adapter->name, c->dev.driver->name, c->addr << 1, type,
>  		  t->mode_mask);
>  	return;
>  
> @@ -556,7 +556,7 @@ static void tuner_lookup(struct i2c_adapter *adap,
>  		int mode_mask;
>  
>  		if (pos->i2c->adapter != adap ||
> -		    strcmp(pos->i2c->driver->driver.name, "tuner"))
> +		    strcmp(pos->i2c->dev.driver->name, "tuner"))
>  			continue;
>  
>  		mode_mask = pos->mode_mask;
> diff --git a/drivers/media/v4l2-core/v4l2-common.c b/drivers/media/v4l2-core/v4l2-common.c
> index 037d7a5..433d6d7 100644
> --- a/drivers/media/v4l2-core/v4l2-common.c
> +++ b/drivers/media/v4l2-core/v4l2-common.c
> @@ -236,14 +236,14 @@ void v4l2_i2c_subdev_init(struct v4l2_subdev *sd, struct i2c_client *client,
>  	v4l2_subdev_init(sd, ops);
>  	sd->flags |= V4L2_SUBDEV_FL_IS_I2C;
>  	/* the owner is the same as the i2c_client's driver owner */
> -	sd->owner = client->driver->driver.owner;
> +	sd->owner = client->dev.driver->owner;
>  	sd->dev = &client->dev;
>  	/* i2c_client and v4l2_subdev point to one another */
>  	v4l2_set_subdevdata(sd, client);
>  	i2c_set_clientdata(client, sd);
>  	/* initialize name */
>  	snprintf(sd->name, sizeof(sd->name), "%s %d-%04x",
> -		client->driver->driver.name, i2c_adapter_id(client->adapter),
> +		client->dev.driver->name, i2c_adapter_id(client->adapter),
>  		client->addr);
>  }
>  EXPORT_SYMBOL_GPL(v4l2_i2c_subdev_init);
> @@ -274,11 +274,11 @@ struct v4l2_subdev *v4l2_i2c_new_subdev_board(struct v4l2_device *v4l2_dev,
>  	   loaded. This delay-load mechanism doesn't work if other drivers
>  	   want to use the i2c device, so explicitly loading the module
>  	   is the best alternative. */
> -	if (client == NULL || client->driver == NULL)
> +	if (client == NULL || client->dev.driver == NULL)
>  		goto error;
>  
>  	/* Lock the module so we can safely get the v4l2_subdev pointer */
> -	if (!try_module_get(client->driver->driver.owner))
> +	if (!try_module_get(client->dev.driver->owner))
>  		goto error;
>  	sd = i2c_get_clientdata(client);
>  
> @@ -287,7 +287,7 @@ struct v4l2_subdev *v4l2_i2c_new_subdev_board(struct v4l2_device *v4l2_dev,
>  	if (v4l2_device_register_subdev(v4l2_dev, sd))
>  		sd = NULL;
>  	/* Decrease the module use count to match the first try_module_get. */
> -	module_put(client->driver->driver.owner);
> +	module_put(client->dev.driver->owner);
>  
>  error:
>  	/* If we have a client but no subdev, then something went wrong and
> diff --git a/include/media/v4l2-common.h b/include/media/v4l2-common.h
> index 16550c4..a707529 100644
> --- a/include/media/v4l2-common.h
> +++ b/include/media/v4l2-common.h
> @@ -35,7 +35,7 @@
>  	printk(level "%s %d-%04x: " fmt, name, i2c_adapter_id(adapter), addr , ## arg)
>  
>  #define v4l_client_printk(level, client, fmt, arg...)			    \
> -	v4l_printk(level, (client)->driver->driver.name, (client)->adapter, \
> +	v4l_printk(level, (client)->dev.driver->name, (client)->adapter, \
>  		   (client)->addr, fmt , ## arg)
>  
>  #define v4l_err(client, fmt, arg...) \
> 

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