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.vi...@samsung.com>
> Cc: Jingoo Han <jg1....@samsung.com>
> Cc: Alan Stern <st...@rowland.harvard.edu>
> +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;
}
> @@ -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.
Otherwise this looks basically okay.
Alan Stern
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