On 20. 09. 22, 10:54, Ilpo Järvinen wrote:
On Tue, 20 Sep 2022, Jiri Slaby wrote:
uart_port_tx() is a new helper to send characters to the device. Use it
in these drivers.
Cc: Tobias Klauser <tklauser@xxxxxxxxxx>
Cc: Richard Genoud <richard.genoud@xxxxxxxxx>
Cc: Nicolas Ferre <nicolas.ferre@xxxxxxxxxxxxx>
Cc: Alexandre Belloni <alexandre.belloni@xxxxxxxxxxx>
Cc: Claudiu Beznea <claudiu.beznea@xxxxxxxxxxxxx>
Cc: Vladimir Zapolskiy <vz@xxxxxxxxx>
Cc: Liviu Dudau <liviu.dudau@xxxxxxx>
Cc: Sudeep Holla <sudeep.holla@xxxxxxx>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@xxxxxxx>
Cc: Shawn Guo <shawnguo@xxxxxxxxxx>
Cc: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>
Cc: Pengutronix Kernel Team <kernel@xxxxxxxxxxxxxx>
Cc: Fabio Estevam <festevam@xxxxxxxxx>
Cc: NXP Linux Team <linux-imx@xxxxxxx>
Cc: "Andreas Färber" <afaerber@xxxxxxx>
Cc: Manivannan Sadhasivam <mani@xxxxxxxxxx>
Signed-off-by: Jiri Slaby <jslaby@xxxxxxx>
---
diff --git a/drivers/tty/serial/mcf.c b/drivers/tty/serial/mcf.c
index b1cd9a76dd93..53b642ea46ba 100644
--- a/drivers/tty/serial/mcf.c
+++ b/drivers/tty/serial/mcf.c
@@ -327,29 +327,13 @@ static void mcf_rx_chars(struct mcf_uart *pp)
static void mcf_tx_chars(struct mcf_uart *pp)
{
struct uart_port *port = &pp->port;
- struct circ_buf *xmit = &port->state->xmit;
-
- if (port->x_char) {
- /* Send special char - probably flow control */
- writeb(port->x_char, port->membase + MCFUART_UTB);
- port->x_char = 0;
- port->icount.tx++;
- return;
- }
-
- while (readb(port->membase + MCFUART_USR) & MCFUART_USR_TXREADY) {
- if (uart_circ_empty(xmit))
- break;
- writeb(xmit->buf[xmit->tail], port->membase + MCFUART_UTB);
- xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE -1);
- port->icount.tx++;
- }
-
- if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
- uart_write_wakeup(port);
+ unsigned int pending;
+ u8 ch;
- if (uart_circ_empty(xmit)) {
- mcf_stop_tx(port);
+ pending = uart_port_tx(port, ch,
+ readb(port->membase + MCFUART_USR) & MCFUART_USR_TXREADY,
+ writeb(ch, port->membase + MCFUART_UTB));
+ if (!pending) {
Why unsigned int pending here and bool pending in the other cases?
Right, I somehow omitted that pending is not used anywhere else. This
should be bool too, of course.
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@xxxxxxxxxxxxxxx>
thanks,
--
js
suse labs
