phy: rockchip: handle clock without enable function

If a clock doesn't supply the enable hook, clk_enable() will return
-ENOSYS.  In this case the clock is always enabled so there is no error
and the phy initialisation should continue.

Signed-off-by: John Keeping <john@metanate.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>

diff --git a/drivers/phy/rockchip/phy-rockchip-inno-usb2.c b/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
index 62b8ba3..b32a498 100644 (file)
--- a/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
+++ b/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
@@ -119,7 +119,7 @@ static int rockchip_usb2phy_init(struct phy *phy)
        int ret;
 
        ret = clk_enable(&priv->phyclk);
-       if (ret) {
+       if (ret && ret != -ENOSYS) {
                dev_err(phy->dev, "failed to enable phyclk (ret=%d)\n", ret);
                return ret;
        }