From: Yoshihiro Shimoda yoshihiro.shimoda.uh@renesas.com
[ Upstream commit d98ef43bfb65b5201e1afe36aaf8c4f9d71b4307 ]
The commit aba3a8d01d62 ("usb: gadget: u_serial: add suspend resume callbacks") set/cleared the suspended flag in USB bus suspend/resume only. But, when a USB cable is disconnected in the suspend, since some controllers will not detect USB bus resume, the suspended flag is not cleared. After that, user cannot send any data. To fix the issue, clears the suspended flag in the gserial_disconnect().
Fixes: aba3a8d01d62 ("usb: gadget: u_serial: add suspend resume callbacks") Signed-off-by: Yoshihiro Shimoda yoshihiro.shimoda.uh@renesas.com Tested-by: Linh Phung linh.phung.jy@renesas.com Tested-by: Tam Nguyen tam.nguyen.xa@renesas.com Signed-off-by: Felipe Balbi balbi@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/usb/gadget/function/u_serial.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/usb/gadget/function/u_serial.c b/drivers/usb/gadget/function/u_serial.c index 127ecc2b43176..2caccbb6e0140 100644 --- a/drivers/usb/gadget/function/u_serial.c +++ b/drivers/usb/gadget/function/u_serial.c @@ -1391,6 +1391,7 @@ void gserial_disconnect(struct gserial *gser) if (port->port.tty) tty_hangup(port->port.tty); } + port->suspended = false; spin_unlock_irqrestore(&port->port_lock, flags);
/* disable endpoints, aborting down any active I/O */