From: Kever Yang <kever.yang@rock-chips.com>
Date: Wed, 28 Aug 2019 08:23:46 +0000 (+0800)
Subject: usb: ehci-generic: don't probe fail if there is no clk_enable() ops
X-Git-Tag: v2019.10-rc4~13^2~10
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=54a0c7b2e7a233aa3975771592afb8e0e2f6acc0;p=platform%2Fkernel%2Fu-boot.git

usb: ehci-generic: don't probe fail if there is no clk_enable() ops

Some clock driver do not have a clk_enable() call back, and we should not
treat this as fail in ehci probe like other modules, eg. clk_enabl_bulk()
do not return fail if ret value is '-ENOSYS'

Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
---

diff --git a/drivers/usb/host/ehci-generic.c b/drivers/usb/host/ehci-generic.c
index 0270f3b..682a070 100644
--- a/drivers/usb/host/ehci-generic.c
+++ b/drivers/usb/host/ehci-generic.c
@@ -96,7 +96,7 @@ static int ehci_usb_probe(struct udevice *dev)
 			if (err < 0)
 				break;
 			err = clk_enable(&priv->clocks[i]);
-			if (err) {
+			if (err && err != -ENOSYS) {
 				dev_err(dev, "failed to enable clock %d\n", i);
 				clk_free(&priv->clocks[i]);
 				goto clk_err;