linux-kernel - Re: [PATCH] phy: tegra: Use PTR_ERR_OR

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Date:   Wed, 6 May 2020 17:17:49 +0530
From:   Vidya Sagar <vidyas@...dia.com>
To:     Aishwarya Ramakrishnan <aishwaryarj100@...il.com>,
        Kishon Vijay Abraham I <kishon@...com>,
        Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        <linux-kernel@...r.kernel.org>, <linux-tegra@...r.kernel.org>,
        <digetx@...il.com>
Subject: Re: [PATCH] phy: tegra: Use PTR_ERR_OR_ZERO() to simplify code

Thanks for pushing this change.
I'm fine with this change as it is attempting to change only the last 
occurrence of the (IS_ERR(...)) + PTR_ERR combination.
But, this code was initially written with PTR_ERR_OR_ZERO() itself but 
later changed to use (IS_ERR(...)) + PTR_ERR based on the review comment 
from Dmitry Osipenko ( https://lkml.org/lkml/2019/6/20/1457 )

Adding Dmitry as well to review the change.

I'm fine with this change.
Reviewed-by: Vidya Sagar <vidyas@...dia.com>

On 05-May-20 8:30 PM, Aishwarya Ramakrishnan wrote:
> External email: Use caution opening links or attachments
> 
> 
> PTR_ERR_OR_ZERO contains if(IS_ERR(...)) + PTR_ERR.
> 
> Generated by: scripts/coccinelle/api/ptr_ret.cocci
> 
> Signed-off-by: Aishwarya Ramakrishnan <aishwaryarj100@...il.com>
> ---
>   drivers/phy/tegra/phy-tegra194-p2u.c | 5 +----
>   1 file changed, 1 insertion(+), 4 deletions(-)
> 
> diff --git a/drivers/phy/tegra/phy-tegra194-p2u.c b/drivers/phy/tegra/phy-tegra194-p2u.c
> index 7042bed9feaa..42394d27f4cb 100644
> --- a/drivers/phy/tegra/phy-tegra194-p2u.c
> +++ b/drivers/phy/tegra/phy-tegra194-p2u.c
> @@ -92,10 +92,7 @@ static int tegra_p2u_probe(struct platform_device *pdev)
>          phy_set_drvdata(generic_phy, phy);
> 
>          phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
> -       if (IS_ERR(phy_provider))
> -               return PTR_ERR(phy_provider);
> -
> -       return 0;
> +       return PTR_ERR_OR_ZERO(phy_provider);
>   }
> 
>   static const struct of_device_id tegra_p2u_id_table[] = {
> --
> 2.17.1
>