Re: [PATCH] PCI: tegra: Use PTR_ERR_OR_ZERO

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On Tue, Aug 29, 2017 at 07:09:00PM +0530, Himanshu Jha wrote:
> Use PTR_ERR_OR_ZERO rather than if(IS_ERR(...)) + PTR_ERR
> 
> Signed-off-by: Himanshu Jha <himanshujha199640@xxxxxxxxx>
> ---
>  drivers/pci/host/pci-tegra.c | 5 +----
>  1 file changed, 1 insertion(+), 4 deletions(-)
> 
> diff --git a/drivers/pci/host/pci-tegra.c b/drivers/pci/host/pci-tegra.c
> index 9c40da5..90cda5b 100644
> --- a/drivers/pci/host/pci-tegra.c
> +++ b/drivers/pci/host/pci-tegra.c
> @@ -1156,10 +1156,7 @@ static int tegra_pcie_resets_get(struct tegra_pcie *pcie)
>  		return PTR_ERR(pcie->afi_rst);
>  
>  	pcie->pcie_xrst = devm_reset_control_get_exclusive(dev, "pcie_x");
> -	if (IS_ERR(pcie->pcie_xrst))
> -		return PTR_ERR(pcie->pcie_xrst);
> -
> -	return 0;
> +	return PTR_ERR_OR_ZERO(pcie->pcie_xrst);
>  }

I'm not a big fan of this construct because it's a pain to undo this if
ever we need to add code to this function. But since we do have scripts
that will flag this, I guess this would pop up every now and again. The
driver is unlikely to change in this part, too, so:

Acked-by: Thierry Reding <treding@xxxxxxxxxx>

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