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| author | Adam Ford <aford173@gmail.com> | 2022-01-29 01:36:03 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-02-16 14:56:35 +0300 |
| commit | d3d5bfb3a279eaa4f344cb7554b0603641a4ae34 (patch) | |
| tree | d59c6d78dd8f7b971890938bc5ee976c81e2cecd | |
| parent | 8d2b04dad380713a3bc2895d3f3e07d87f73336c (diff) | |
| download | linux-d3d5bfb3a279eaa4f344cb7554b0603641a4ae34.tar.xz | |
usb: gadget: udc: renesas_usb3: Fix host to USB_ROLE_NONE transition
commit 459702eea6132888b5c5b64c0e9c626da4ec2493 upstream.
The support the external role switch a variety of situations were
addressed, but the transition from USB_ROLE_HOST to USB_ROLE_NONE
leaves the host up which can cause some error messages when
switching from host to none, to gadget, to none, and then back
to host again.
xhci-hcd ee000000.usb: Abort failed to stop command ring: -110
xhci-hcd ee000000.usb: xHCI host controller not responding, assume dead
xhci-hcd ee000000.usb: HC died; cleaning up
usb 4-1: device not accepting address 6, error -108
usb usb4-port1: couldn't allocate usb_device
After this happens it will not act as a host again.
Fix this by releasing the host mode when transitioning to USB_ROLE_NONE.
Fixes: 0604160d8c0b ("usb: gadget: udc: renesas_usb3: Enhance role switch support")
Cc: stable <stable@vger.kernel.org>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Adam Ford <aford173@gmail.com>
Link: https://lore.kernel.org/r/20220128223603.2362621-1-aford173@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/gadget/udc/renesas_usb3.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/usb/gadget/udc/renesas_usb3.c b/drivers/usb/gadget/udc/renesas_usb3.c index 57d417a7c3e0..601829a6b4ba 100644 --- a/drivers/usb/gadget/udc/renesas_usb3.c +++ b/drivers/usb/gadget/udc/renesas_usb3.c @@ -2378,6 +2378,8 @@ static void handle_ext_role_switch_states(struct device *dev, switch (role) { case USB_ROLE_NONE: usb3->connection_state = USB_ROLE_NONE; + if (cur_role == USB_ROLE_HOST) + device_release_driver(host); if (usb3->driver) usb3_disconnect(usb3); usb3_vbus_out(usb3, false); |