From: Johan Hovold Date: Thu, 21 Mar 2013 11:37:03 +0000 (+0100) Subject: USB: cypress_m8: fix TIOCMIWAIT and disconnect X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=c648e94ebfc7701f4d0c79dce959134f02f24ce7;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git USB: cypress_m8: fix TIOCMIWAIT and disconnect Use tty-port modem-status-change wait queue on which processes are woken up at hangup and disconnect. Currently a process waiting on modem-status changes will not be woken on device disconnect. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/usb/serial/cypress_m8.c b/drivers/usb/serial/cypress_m8.c index cdbb09691aee..e4a62cfc4081 100644 --- a/drivers/usb/serial/cypress_m8.c +++ b/drivers/usb/serial/cypress_m8.c @@ -861,7 +861,7 @@ static int cypress_tiocmiwait(struct tty_struct *tty, unsigned long arg) char diff; for (;;) { - interruptible_sleep_on(&port->delta_msr_wait); + interruptible_sleep_on(&port->port.delta_msr_wait); /* see if a signal did it */ if (signal_pending(current)) return -ERESTARTSYS; @@ -1176,7 +1176,7 @@ static void cypress_read_int_callback(struct urb *urb) if (priv->current_status != priv->prev_status) { priv->diff_status |= priv->current_status ^ priv->prev_status; - wake_up_interruptible(&port->delta_msr_wait); + wake_up_interruptible(&port->port.delta_msr_wait); priv->prev_status = priv->current_status; } spin_unlock_irqrestore(&priv->lock, flags);