serial: sh-sci: Remove unused platform data capabilities field

The field isn't set by any platform but is only used internally in the
driver to hold data parsed from DT. Move it to the sci_port structure.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/tty/serial/sh-sci.c

@@ -149,6 +149,7 @@ struct sci_port {
 	unsigned int			rx_timeout;
 #endif
 
+	bool has_rtscts;
 	bool autorts;
 };
 
@@ -680,7 +681,7 @@ static void sci_init_pins(struct uart_port *port, unsigned int cflag)
 
 		/* Enable RXD and TXD pin functions */
 		ctrl &= ~(SCPCR_RXDC | SCPCR_TXDC);
-		if (to_sci_port(port)->cfg->capabilities & SCIx_HAVE_RTSCTS) {
+		if (to_sci_port(port)->has_rtscts) {
 			/* RTS# is output, driven 1 */
 			ctrl |= SCPCR_RTSC;
 			serial_port_out(port, SCPDR,
@@ -1738,7 +1739,7 @@ static void sci_set_mctrl(struct uart_port *port, unsigned int mctrl)
 
 	mctrl_gpio_set(s->gpios, mctrl);
 
-	if (!(s->cfg->capabilities & SCIx_HAVE_RTSCTS))
+	if (!s->has_rtscts)
 		return;
 
 	if (!(mctrl & TIOCM_RTS)) {
@@ -2809,6 +2810,7 @@ sci_parse_dt(struct platform_device *pdev, unsigned int *dev_id)
 	struct device_node *np = pdev->dev.of_node;
 	const struct of_device_id *match;
 	struct plat_sci_port *p;
+	struct sci_port *sp;
 	int id;
 
 	if (!IS_ENABLED(CONFIG_OF) || !np)
@@ -2829,13 +2831,14 @@ sci_parse_dt(struct platform_device *pdev, unsigned int *dev_id)
 		return NULL;
 	}
 
+	sp = &sci_ports[id];
 	*dev_id = id;
 
 	p->type = SCI_OF_TYPE(match->data);
 	p->regtype = SCI_OF_REGTYPE(match->data);
 
 	if (of_find_property(np, "uart-has-rtscts", NULL))
-		p->capabilities |= SCIx_HAVE_RTSCTS;
+		sp->has_rtscts = true;
 
 	return p;
 }
@@ -2863,7 +2866,7 @@ static int sci_probe_single(struct platform_device *dev,
 	if (IS_ERR(sciport->gpios) && PTR_ERR(sciport->gpios) != -ENOSYS)
 		return PTR_ERR(sciport->gpios);
 
-	if (p->capabilities & SCIx_HAVE_RTSCTS) {
+	if (sciport->has_rtscts) {
 		if (!IS_ERR_OR_NULL(mctrl_gpio_to_gpiod(sciport->gpios,
 							UART_GPIO_CTS)) ||
 		    !IS_ERR_OR_NULL(mctrl_gpio_to_gpiod(sciport->gpios,

include/linux/serial_sci.h

@@ -43,18 +43,12 @@ struct plat_sci_port_ops {
 	void (*init_pins)(struct uart_port *, unsigned int cflag);
 };
 
-/*
- * Port-specific capabilities
- */
-#define SCIx_HAVE_RTSCTS	BIT(0)
-
 /*
  * Platform device specific platform_data struct
  */
 struct plat_sci_port {
 	unsigned int	type;			/* SCI / SCIF / IRDA / HSCIF */
 	upf_t		flags;			/* UPF_* flags */
-	unsigned long	capabilities;		/* Port features/capabilities */
 
 	unsigned int	sampling_rate;
 	unsigned int	scscr;			/* SCSCR initialization */