From 113ec31e16afe197a668d4b63ce41e04dc706c64 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Thu, 18 Apr 2013 17:33:19 +0200 Subject: [PATCH] USB: ti_usb_3410_5052: move write-fifo flushing to close Move write-fifo flushing from ti_drain to close where it belongs. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/ti_usb_3410_5052.c | 17 ++++++++--------- 1 file changed, 8 insertions(+), 9 deletions(-) diff --git a/drivers/usb/serial/ti_usb_3410_5052.c b/drivers/usb/serial/ti_usb_3410_5052.c index 07268591b0d1..a49d2a746ccf 100644 --- a/drivers/usb/serial/ti_usb_3410_5052.c +++ b/drivers/usb/serial/ti_usb_3410_5052.c @@ -128,7 +128,7 @@ static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport, struct serial_struct __user *new_arg); static void ti_handle_new_msr(struct ti_port *tport, __u8 msr); -static void ti_drain(struct ti_port *tport, unsigned long timeout, int flush); +static void ti_drain(struct ti_port *tport, unsigned long timeout); static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty); static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty); @@ -601,6 +601,7 @@ static void ti_close(struct usb_serial_port *port) int port_number; int status; int do_unlock; + unsigned long flags; tdev = usb_get_serial_data(port->serial); tport = usb_get_serial_port_data(port); @@ -609,11 +610,14 @@ static void ti_close(struct usb_serial_port *port) tport->tp_is_open = 0; - ti_drain(tport, (tport->tp_closing_wait*HZ)/100, 1); + ti_drain(tport, (tport->tp_closing_wait*HZ)/100); usb_kill_urb(port->read_urb); usb_kill_urb(port->write_urb); tport->tp_write_urb_in_use = 0; + spin_lock_irqsave(&tport->tp_lock, flags); + kfifo_reset_out(&tport->write_fifo); + spin_unlock_irqrestore(&tport->tp_lock, flags); port_number = port->number - port->serial->minor; @@ -965,7 +969,7 @@ static void ti_break(struct tty_struct *tty, int break_state) if (tport == NULL) return; - ti_drain(tport, (tport->tp_closing_wait*HZ)/100, 0); + ti_drain(tport, (tport->tp_closing_wait*HZ)/100); status = ti_write_byte(port, tport->tp_tdev, tport->tp_uart_base_addr + TI_UART_OFFSET_LCR, @@ -1361,7 +1365,7 @@ static void ti_handle_new_msr(struct ti_port *tport, __u8 msr) } -static void ti_drain(struct ti_port *tport, unsigned long timeout, int flush) +static void ti_drain(struct ti_port *tport, unsigned long timeout) { struct ti_device *tdev = tport->tp_tdev; struct usb_serial_port *port = tport->tp_port; @@ -1386,11 +1390,6 @@ static void ti_drain(struct ti_port *tport, unsigned long timeout, int flush) } set_current_state(TASK_RUNNING); remove_wait_queue(&tport->tp_write_wait, &wait); - - /* flush any remaining data in the buffer */ - if (flush) - kfifo_reset_out(&tport->write_fifo); - spin_unlock_irq(&tport->tp_lock); mutex_lock(&port->serial->disc_mutex);