Hi,
On Fri, Apr 25, 2014 at 8:06 PM, Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote:
> 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.
ok, will remove the 'ret' check in for loop.
>
> 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.
Sure, will make these routines as a part of exynos_ohci_phy_enable()
and exynos_ohci_phy_disable().
>
>> @@ -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().
Ah ! my bad, will remove this.
--
Best Regards
Vivek Gautam
Samsung R&D Institute, Bangalore
India
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