linux-kernel - Re: [PATCH 48/61] staging: iio: adc: simplify getting .drvdata

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Date:   Sat, 21 Apr 2018 17:10:59 +0100
From:   Jonathan Cameron <jic23@...nel.org>
To:     Wolfram Sang <wsa+renesas@...g-engineering.com>
Cc:     linux-kernel@...r.kernel.org, linux-renesas-soc@...r.kernel.org,
        kernel-janitors@...r.kernel.org,
        Lars-Peter Clausen <lars@...afoo.de>,
        Michael Hennerich <Michael.Hennerich@...log.com>,
        Hartmut Knaack <knaack.h@....de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-iio@...r.kernel.org, devel@...verdev.osuosl.org
Subject: Re: [PATCH 48/61] staging: iio: adc: simplify getting .drvdata

On Thu, 19 Apr 2018 16:06:18 +0200
Wolfram Sang <wsa+renesas@...g-engineering.com> wrote:

> We should get drvdata from struct device directly. Going via
> platform_device is an unneeded step back and forth.
> 
> Signed-off-by: Wolfram Sang <wsa+renesas@...g-engineering.com>
Applied, thanks,

Jonathan

> ---
> 
> Build tested only. buildbot is happy. Please apply individually.
> 
>  drivers/staging/iio/adc/ad7606_par.c | 6 ++----
>  1 file changed, 2 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/staging/iio/adc/ad7606_par.c b/drivers/staging/iio/adc/ad7606_par.c
> index 3eb6f8f312dd..a34c2a1d5373 100644
> --- a/drivers/staging/iio/adc/ad7606_par.c
> +++ b/drivers/staging/iio/adc/ad7606_par.c
> @@ -18,8 +18,7 @@
>  static int ad7606_par16_read_block(struct device *dev,
>  				   int count, void *buf)
>  {
> -	struct platform_device *pdev = to_platform_device(dev);
> -	struct iio_dev *indio_dev = platform_get_drvdata(pdev);
> +	struct iio_dev *indio_dev = dev_get_drvdata(dev);
>  	struct ad7606_state *st = iio_priv(indio_dev);
>  
>  	insw((unsigned long)st->base_address, buf, count);
> @@ -34,8 +33,7 @@ static const struct ad7606_bus_ops ad7606_par16_bops = {
>  static int ad7606_par8_read_block(struct device *dev,
>  				  int count, void *buf)
>  {
> -	struct platform_device *pdev = to_platform_device(dev);
> -	struct iio_dev *indio_dev = platform_get_drvdata(pdev);
> +	struct iio_dev *indio_dev = dev_get_drvdata(dev);
>  	struct ad7606_state *st = iio_priv(indio_dev);
>  
>  	insb((unsigned long)st->base_address, buf, count * 2);