[PATCH v3 1/5] usb: ohci-generic: ignore ENOSYS and ENOTSUPP errors from clk and reset

[Piotr Wojtaszczyk]

If a machine doesn't have CONFIG_CLK set the call to clk_get_bulk()
returns '-ENOSYS' error which should be handled the same way as
'-ENOENT' error. The same applies to reset_get_bulk() and 'ENOTSUPP'.

Signed-off-by: Piotr Wojtaszczyk <piotr.wojtaszczyk at timesys.com>
---
Changes for v3:
- Removed extra parenthesis around error checks

Changes for v2:
- Changed logic style from !(== || ==) to (!= && !=)

 drivers/usb/host/ohci-generic.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/drivers/usb/host/ohci-generic.c b/drivers/usb/host/ohci-generic.c
index ceed1911a9..d67fce2d02 100644
--- a/drivers/usb/host/ohci-generic.c
+++ b/drivers/usb/host/ohci-generic.c
@@ -28,7 +28,7 @@ static int ohci_usb_probe(struct udevice *dev)
 	int err, ret;
 
 	ret = clk_get_bulk(dev, &priv->clocks);
-	if (ret && ret != -ENOENT) {
+	if (ret && ret != -ENOENT && ret != -ENOSYS) {
 		dev_err(dev, "Failed to get clocks (ret=%d)\n", ret);
 		return ret;
 	}
@@ -40,7 +40,7 @@ static int ohci_usb_probe(struct udevice *dev)
 	}
 
 	err = reset_get_bulk(dev, &priv->resets);
-	if (err && err != -ENOENT) {
+	if (err && err != -ENOENT && err != -ENOTSUPP) {
 		dev_err(dev, "failed to get resets (err=%d)\n", err);
 		goto clk_err;
 	}
@@ -72,7 +72,7 @@ reset_err:
 		dev_err(dev, "failed to release resets (ret=%d)\n", ret);
 clk_err:
 	ret = clk_release_bulk(&priv->clocks);
-	if (ret)
+	if (ret && ret != -ENOSYS)
 		dev_err(dev, "failed to release clocks (ret=%d)\n", ret);
 
 	return err;
@@ -95,7 +95,11 @@ static int ohci_usb_remove(struct udevice *dev)
 	if (ret)
 		return ret;
 
-	return clk_release_bulk(&priv->clocks);
+	ret = clk_release_bulk(&priv->clocks);
+	if (ret && ret != -ENOSYS)
+		return ret;
+
+	return 0;
 }
 
 static const struct udevice_id ohci_usb_ids[] = {
-- 
2.25.1