Hi Alan,
On Tue, Apr 22, 2014 at 11:28 PM, Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote:
Thanks for reviewing this. Please find my comments inline below.
> On Thu, 10 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, bool on)
>> +{
>> + int ret = 0;
>> +
>> + if (phy) {
>> + if (on)
>> + ret = phy_power_on(phy);
>> + else
>> + ret = phy_power_off(phy);
>> + }
>> +
>> + return ret;
>> +}
>
> This would be cleaner if you had separate routines for
> exynos_ohci_phyg_of and exynos_ohci_phyg_off. For example:
>
> static int exynos_ohci_phyg_on(struct phy *phy)
> {
> return phy ? phy_power_on(phy) : 0;
> }
Sure, i will make two separate routines here.
>
>> @@ -88,16 +104,49 @@ static int exynos_ohci_probe(struct platform_device *pdev)
>> "samsung,exynos5440-ohci"))
>> goto skip_phy;
>>
>> - phy = devm_usb_get_phy(&pdev->dev, USB_PHY_TYPE_USB2);
>> - if (IS_ERR(phy)) {
>> - usb_put_hcd(hcd);
>> - dev_warn(&pdev->dev, "no platform data or transceiver defined\n");
>> - return -EPROBE_DEFER;
>> + exynos_ohci->phy = devm_usb_get_phy(&pdev->dev, USB_PHY_TYPE_USB2);
>> + if (IS_ERR(exynos_ohci->phy)) {
>> + err = PTR_ERR(exynos_ohci->phy);
>> + if (err == -ENXIO || err == -ENODEV) {
>> + exynos_ohci->phy = NULL;
>> + } else if (err == -EPROBE_DEFER) {
>> + usb_put_hcd(hcd);
>> + return err;
>> + } else {
>> + dev_err(&pdev->dev, "no usb2 phy configured\n");
>> + usb_put_hcd(hcd);
>> + return err;
>> + }
>
> Instead of all the calls to usb_put_hcd() here and below, just goto
> fail_clk. Or add a new fail_phy label at the same spot and goto it.
Sure, i can use a new label here.
>
> Otherwise this looks basically okay.
Sure, i will send the next version of this patch after rework.
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