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phy: sun4i-usb: Support set_mode to USB_HOST for non-OTG PHYs 

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 b97a313483 ("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: 6ba43c2919 ("phy-sun4i-usb: Add support for phy_set_mode")
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Chen-Yu Tsai 2019-03-22 16:51:07 +08:00 committed by Greg Kroah-Hartman
parent d92f2c59cc
commit 1396929e8a
1 changed files with 4 additions and 1 deletions
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5
drivers/phy/allwinner/phy-sun4i-usb.c
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@ -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); struct sun4i_usb_phy_data *data = to_sun4i_usb_phy_data(phy);
int new_mode; int new_mode;
if (phy->index != 0) if (phy->index != 0) {
if (mode == PHY_MODE_USB_HOST)
return 0;
return -EINVAL; return -EINVAL;
}
switch (mode) { switch (mode) {
case PHY_MODE_USB_HOST: case PHY_MODE_USB_HOST: