Macpaul Lin 8ba02cebb7 usb: mtu3: fix USB 3.0 dual-role-switch from device to host ... commit 456244aeecd54249096362a173dfe06b82a5cafa upstream. Issue description: When an OTG port has been switched to device role and then switch back to host role again, the USB 3.0 Host (XHCI) will not be able to detect "plug in event of a connected USB 2.0/1.0 ((Highspeed and Fullspeed) devices until system reboot. Root cause and Solution: There is a condition checking flag "ssusb->otg_switch.is_u3_drd" in toggle_opstate(). At the end of role switch procedure, toggle_opstate() will be called to set DC_SESSION and SOFT_CONN bit. If "is_u3_drd" was set and switched the role to USB host 3.0, bit DC_SESSION and SOFT_CONN will be skipped hence caused the port cannot detect connected USB 2.0 (Highspeed and Fullspeed) devices. Simply remove the condition check to solve this issue. Fixes: d0ed062a8b ("usb: mtu3: dual-role mode support") Cc: stable@vger.kernel.org Tested-by: Fabien Parent <fparent@baylibre.com> Reviewed-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Signed-off-by: Macpaul Lin <macpaul.lin@mediatek.com> Signed-off-by: Tainping Fang <tianping.fang@mediatek.com> Link: https://lore.kernel.org/r/20220419081245.21015-1-macpaul.lin@mediatek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2022-05-09 09:04:56 +02:00
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Kconfig
Makefile
mtu3_core.c
mtu3_debug.h
mtu3_debugfs.c
mtu3_dr.c	usb: mtu3: fix USB 3.0 dual-role-switch from device to host	2022-05-09 09:04:56 +02:00
mtu3_dr.h
mtu3_gadget_ep0.c
mtu3_gadget.c	usb: mtu3: fix interval value for intr and isoc	2022-01-11 15:25:02 +01:00
mtu3_host.c
mtu3_hw_regs.h
mtu3_plat.c
mtu3_qmu.c	usb: mtu3: add memory barrier before set GPD's HWO	2022-01-05 12:40:33 +01:00
mtu3_qmu.h
mtu3_trace.c
mtu3_trace.h
mtu3.h