From: Chunfeng Yun <chunfeng....@mediatek.com> [ Upstream commit f1e51e99ed498d4aa9ae5df28e43d558ea627781 ]
If not clear u3port's dual mode when disable device, the IP will fail to enter sleep mode when suspend. Signed-off-by: Chunfeng Yun <chunfeng....@mediatek.com> Link: https://lore.kernel.org/r/1595834101-13094-10-git-send-email-chunfeng....@mediatek.com Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org> Signed-off-by: Sasha Levin <sas...@kernel.org> --- drivers/usb/mtu3/mtu3_core.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/usb/mtu3/mtu3_core.c b/drivers/usb/mtu3/mtu3_core.c index 9dd02160cca97..e3780d4d65149 100644 --- a/drivers/usb/mtu3/mtu3_core.c +++ b/drivers/usb/mtu3/mtu3_core.c @@ -131,8 +131,12 @@ static void mtu3_device_disable(struct mtu3 *mtu) mtu3_setbits(ibase, SSUSB_U2_CTRL(0), SSUSB_U2_PORT_DIS | SSUSB_U2_PORT_PDN); - if (mtu->ssusb->dr_mode == USB_DR_MODE_OTG) + if (mtu->ssusb->dr_mode == USB_DR_MODE_OTG) { mtu3_clrbits(ibase, SSUSB_U2_CTRL(0), SSUSB_U2_PORT_OTG_SEL); + if (mtu->is_u3_ip) + mtu3_clrbits(ibase, SSUSB_U3_CTRL(0), + SSUSB_U3_PORT_DUAL_MODE); + } mtu3_setbits(ibase, U3D_SSUSB_IP_PW_CTRL2, SSUSB_IP_DEV_PDN); } -- 2.25.1
