From f4b042a050062b2dec456adfced13d61341939e2 Mon Sep 17 00:00:00 2001 From: Vignesh Raghavendra Date: Thu, 19 Mar 2020 16:02:30 +0530 Subject: serial: 8250: 8250_omap: Fix throttle to call stop_rx() Call stop_rx() to halt reception when throttle is requested. Update unthrottle callback to restart reception. Signed-off-by: Vignesh Raghavendra Link: https://lore.kernel.org/r/20200319103230.16867-3-vigneshr@ti.com Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/8250/8250_omap.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) (limited to 'drivers/tty/serial/8250/8250_omap.c') diff --git a/drivers/tty/serial/8250/8250_omap.c b/drivers/tty/serial/8250/8250_omap.c index dd69226ce918..b0e70390bc55 100644 --- a/drivers/tty/serial/8250/8250_omap.c +++ b/drivers/tty/serial/8250/8250_omap.c @@ -699,14 +699,12 @@ static void omap_8250_shutdown(struct uart_port *port) static void omap_8250_throttle(struct uart_port *port) { struct omap8250_priv *priv = port->private_data; - struct uart_8250_port *up = up_to_u8250p(port); unsigned long flags; pm_runtime_get_sync(port->dev); spin_lock_irqsave(&port->lock, flags); - up->ier &= ~(UART_IER_RLSI | UART_IER_RDI); - serial_out(up, UART_IER, up->ier); + port->ops->stop_rx(port); priv->throttled = true; spin_unlock_irqrestore(&port->lock, flags); @@ -727,6 +725,7 @@ static void omap_8250_unthrottle(struct uart_port *port) if (up->dma) up->dma->rx_dma(up); up->ier |= UART_IER_RLSI | UART_IER_RDI; + port->read_status_mask |= UART_LSR_DR; serial_out(up, UART_IER, up->ier); spin_unlock_irqrestore(&port->lock, flags); -- cgit