linux-kernel - Re: [PATCH] media: pci: Use dev_get

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Date:   Wed, 24 Jul 2019 09:23:41 +0800
From:   Chuhong Yuan <hslester96@...il.com>
To:     "Cao, Bingbu" <bingbu.cao@...el.com>
Cc:     "Zhi, Yong" <yong.zhi@...el.com>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Akihiro Tsukada <tskd08@...il.com>,
        "linux-media@...r.kernel.org" <linux-media@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] media: pci: Use dev_get_drvdata where possible

On Tue, Jul 23, 2019 at 10:39 PM Cao, Bingbu <bingbu.cao@...el.com> wrote:
>
>
>
> ________________________
> BRs,
> Bingbu Cao
>
>
> -----Original Message-----
> From: Chuhong Yuan <hslester96@...il.com>
> Sent: Tuesday, July 23, 2019 7:50 PM
> Cc: Zhi, Yong <yong.zhi@...el.com>; Sakari Ailus <sakari.ailus@...ux.intel.com>; Cao, Bingbu <bingbu.cao@...el.com>; Mauro Carvalho Chehab <mchehab@...nel.org>; Akihiro Tsukada <tskd08@...il.com>; linux-media@...r.kernel.org; linux-kernel@...r.kernel.org; Chuhong Yuan <hslester96@...il.com>
> Subject: [PATCH] media: pci: Use dev_get_drvdata where possible
>
> Instead of using to_pci_dev + pci_get_drvdata, use dev_get_drvdata to make code simpler.
>
> Signed-off-by: Chuhong Yuan <hslester96@...il.com>
> ---
>  drivers/media/pci/intel/ipu3/ipu3-cio2.c | 3 +--
>  drivers/media/pci/pt1/pt1.c              | 6 ++----
>  drivers/media/pci/pt3/pt3.c              | 6 ++----
>  3 files changed, 5 insertions(+), 10 deletions(-)
>
> diff --git a/drivers/media/pci/intel/ipu3/ipu3-cio2.c b/drivers/media/pci/intel/ipu3/ipu3-cio2.c
> index c1d133e17e4b..50a34bcd4d14 100644
> --- a/drivers/media/pci/intel/ipu3/ipu3-cio2.c
> +++ b/drivers/media/pci/intel/ipu3/ipu3-cio2.c
> @@ -2000,8 +2000,7 @@ static int __maybe_unused cio2_suspend(struct device *dev)
>
>  static int __maybe_unused cio2_resume(struct device *dev)  {
> -       struct pci_dev *pci_dev = to_pci_dev(dev);
> -       struct cio2_device *cio2 = pci_get_drvdata(pci_dev);
> +       struct cio2_device *cio2 = dev_get_drvdata(dev);
>
> Thanks for your patch.
> I think using pci_get_drvdata() here mainly make a pair with the pci_set_drvdata() in probe.

Thanks for your reply.
I will change pci_set_drvdata() to dev_set_drvdata() in the next
version to keep their consistency.

>
>         int r = 0;
>         struct cio2_queue *q = cio2->cur_queue;
>
> diff --git a/drivers/media/pci/pt1/pt1.c b/drivers/media/pci/pt1/pt1.c index e51c80bc4646..72b191cfeb54 100644
> --- a/drivers/media/pci/pt1/pt1.c
> +++ b/drivers/media/pci/pt1/pt1.c
> @@ -1217,8 +1217,7 @@ static void pt1_i2c_init(struct pt1 *pt1)
>
>  static int pt1_suspend(struct device *dev)  {
> -       struct pci_dev *pdev = to_pci_dev(dev);
> -       struct pt1 *pt1 = pci_get_drvdata(pdev);
> +       struct pt1 *pt1 = dev_get_drvdata(dev);
>
>         pt1_init_streams(pt1);
>         pt1_disable_ram(pt1);
> @@ -1230,8 +1229,7 @@ static int pt1_suspend(struct device *dev)
>
>  static int pt1_resume(struct device *dev)  {
> -       struct pci_dev *pdev = to_pci_dev(dev);
> -       struct pt1 *pt1 = pci_get_drvdata(pdev);
> +       struct pt1 *pt1 = dev_get_drvdata(dev);
>         int ret;
>         int i;
>
> diff --git a/drivers/media/pci/pt3/pt3.c b/drivers/media/pci/pt3/pt3.c index 7a7afae4c84c..c0bc86793355 100644
> --- a/drivers/media/pci/pt3/pt3.c
> +++ b/drivers/media/pci/pt3/pt3.c
> @@ -626,8 +626,7 @@ static void pt3_cleanup_adapter(struct pt3_board *pt3, int index)
>
>  static int pt3_suspend(struct device *dev)  {
> -       struct pci_dev *pdev = to_pci_dev(dev);
> -       struct pt3_board *pt3 = pci_get_drvdata(pdev);
> +       struct pt3_board *pt3 = dev_get_drvdata(dev);
>         int i;
>         struct pt3_adapter *adap;
>
> @@ -646,8 +645,7 @@ static int pt3_suspend(struct device *dev)
>
>  static int pt3_resume(struct device *dev)  {
> -       struct pci_dev *pdev = to_pci_dev(dev);
> -       struct pt3_board *pt3 = pci_get_drvdata(pdev);
> +       struct pt3_board *pt3 = dev_get_drvdata(dev);
>         int i, ret;
>         struct pt3_adapter *adap;
>
> --
> 2.20.1
>