On Fri, 25 Apr 2014, Vivek Gautam wrote:
> Add support to consume phy provided by Generic phy framework.
> Keeping the support for older usb-phy intact right now, in order
> to prevent any functionality break in absence of relevant
> device tree side change for ohci-exynos.
> Once we move to new phy in the device nodes for ohci, we can
> remove the support for older phys.
>
> Signed-off-by: Vivek Gautam <gautam.vivek@xxxxxxxxxxx>
> Cc: Jingoo Han <jg1.han@xxxxxxxxxxx>
> Cc: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
> +static int exynos_ohci_phyg_on(struct phy *phy[])
> +{
> + int i;
> + int ret = 0;
> +
> + for (i = 0; ret == 0 && i < PHY_NUMBER; i++)
> + if (phy[i])
> + ret = phy_power_on(phy[i]);
> + if (ret)
> + for (i--; i >= 0; i--)
> + if (phy[i])
> + phy_power_off(phy[i]);
> +
> + return ret;
> +}
> +
> +static int exynos_ohci_phyg_off(struct phy *phy[])
> +{
> + int i;
> + int ret = 0;
> +
> + for (i = 0; ret == 0 && i < PHY_NUMBER; i++)
> + if (phy[i])
> + ret = phy_power_off(phy[i]);
> +
> + return ret;
> +}
You probably shouldn't break out of this loop if ret is nonzero; you
should continue to power off the remaining phys.
I'd be inclined to put these two routines directly into
exynos_ohci_phy_enable() and exynos_ohci_phy_disable(), since they
aren't used anywhere else.
> @@ -151,6 +253,7 @@ skip_phy:
>
> fail_add_hcd:
> exynos_ohci_phy_disable(pdev);
> + exynos_ohci_phyg_off(exynos_ohci->phy_g);
Why did you add this line? It doesn't do anything useful, because
exynos_ohci_phy_disable() already calls exynos_ohci_phyg_off().
Alan Stern
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