diff options
| author | Vignesh Raghavendra <vigneshr@ti.com> | 2020-03-19 11:32:30 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-03-24 12:25:09 +0100 |
| commit | f4b042a050062b2dec456adfced13d61341939e2 (patch) | |
| tree | 8be002345700a4f9e97b1f2ca23274efd91c0cd6 /drivers/tty | |
| parent | serial: 8250_port: Don't service RX FIFO if throttled (diff) | |
| download | linux-f4b042a050062b2dec456adfced13d61341939e2.tar.xz linux-f4b042a050062b2dec456adfced13d61341939e2.zip | |
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 <vigneshr@ti.com>
Link: https://lore.kernel.org/r/20200319103230.16867-3-vigneshr@ti.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/8250/8250_omap.c | 5 |
1 files changed, 2 insertions, 3 deletions
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); |