Re: [PATCH v2 03/14] [media] coda: simplify optional reset handling

From: Hans Verkuil
Date: Mon Mar 20 2017 - 06:24:37 EST


Hi Philipp,

I'm a bit confused: I only see patches 3, 4 and 5 of 14 and no cover letter,
and I don't think I ever saw a v1 of this patch series on linux-media.
I assume this is a patch series covering multiple subsystems?

This patch looks good and I'm happy to take it for 4.12, I just want to make
sure I didn't miss anything.

Regards,

Hans

On 03/15/2017 12:31 PM, Philipp Zabel wrote:
> As of commit bb475230b8e5 ("reset: make optional functions really
> optional"), the reset framework API calls use NULL pointers to
> describe optional, non-present reset controls.
>
> This allows to return errors from devm_reset_control_get_optional
> without special cases and to call reset_control_reset unconditionally.
>
> Signed-off-by: Philipp Zabel <p.zabel@xxxxxxxxxxxxxx>
> ---
> drivers/media/platform/coda/coda-common.c | 12 +++---------
> 1 file changed, 3 insertions(+), 9 deletions(-)
>
> diff --git a/drivers/media/platform/coda/coda-common.c b/drivers/media/platform/coda/coda-common.c
> index eb6548f46cbac..0cf667ab44bfb 100644
> --- a/drivers/media/platform/coda/coda-common.c
> +++ b/drivers/media/platform/coda/coda-common.c
> @@ -1982,8 +1982,7 @@ static int coda_hw_init(struct coda_dev *dev)
> if (ret)
> goto err_clk_ahb;
>
> - if (dev->rstc)
> - reset_control_reset(dev->rstc);
> + reset_control_reset(dev->rstc);
>
> /*
> * Copy the first CODA_ISRAM_SIZE in the internal SRAM.
> @@ -2362,13 +2361,8 @@ static int coda_probe(struct platform_device *pdev)
> dev->rstc = devm_reset_control_get_optional(&pdev->dev, NULL);
> if (IS_ERR(dev->rstc)) {
> ret = PTR_ERR(dev->rstc);
> - if (ret == -ENOENT || ret == -ENOTSUPP) {
> - dev->rstc = NULL;
> - } else {
> - dev_err(&pdev->dev, "failed get reset control: %d\n",
> - ret);
> - return ret;
> - }
> + dev_err(&pdev->dev, "failed get reset control: %d\n", ret);
> + return ret;
> }
>
> /* Get IRAM pool from device tree or platform data */
>