From: Chen-Yu Tsai <wens@xxxxxxxx>
While only the first PHY supports mode switching, the remaining PHYs
work in USB host mode. They should support set_mode with mode=USB_HOST
instead of failing. This is especially needed now that the USB core does
set_mode for all USB ports, which was added in commit b97a31348379 ("usb:
core: comply to PHY framework").
Make set_mode with mode=USB_HOST a no-op instead of failing for the
non-OTG USB PHYs.
Fixes: 6ba43c291961 ("phy-sun4i-usb: Add support for phy_set_mode")
Signed-off-by: Chen-Yu Tsai <wens@xxxxxxxx>
---
drivers/phy/allwinner/phy-sun4i-usb.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/phy/allwinner/phy-sun4i-usb.c b/drivers/phy/allwinner/phy-sun4i-usb.c
index 5163097b43df..4bbd9ede38c8 100644
--- a/drivers/phy/allwinner/phy-sun4i-usb.c
+++ b/drivers/phy/allwinner/phy-sun4i-usb.c
@@ -485,8 +485,11 @@ static int sun4i_usb_phy_set_mode(struct phy *_phy,
struct sun4i_usb_phy_data *data = to_sun4i_usb_phy_data(phy);
int new_mode;
- if (phy->index != 0)
+ if (phy->index != 0) {
+ if (mode == PHY_MODE_USB_HOST)
+ return 0;
return -EINVAL;
+ }
switch (mode) {
case PHY_MODE_USB_HOST:
--
2.20.1
