serial: sc16is7xx: add macro for max number of UART ports

Add macro to hold the maximum number of UART ports per IC/device.

Signed-off-by: Hugo Villeneuve <hvilleneuve@dimonoff.com>
Link: https://lore.kernel.org/r/20231221231823.2327894-11-hugo@hugovil.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Author: hvilleneuvedoo

drivers/tty/serial/sc16is7xx.c

@@ -29,6 +29,7 @@
 
 #define SC16IS7XX_NAME			"sc16is7xx"
 #define SC16IS7XX_MAX_DEVS		8
+#define SC16IS7XX_MAX_PORTS		2 /* Maximum number of UART ports per IC. */
 
 /* SC16IS7XX register definitions */
 #define SC16IS7XX_RHR_REG		(0x00) /* RX FIFO */
@@ -1398,7 +1399,7 @@ static void sc16is7xx_setup_irda_ports(struct sc16is7xx_port *s)
 	int i;
 	int ret;
 	int count;
-	u32 irda_port[2];
+	u32 irda_port[SC16IS7XX_MAX_PORTS];
 	struct device *dev = s->p[0].port.dev;
 
 	count = device_property_count_u32(dev, "irda-mode-ports");
@@ -1425,7 +1426,7 @@ static int sc16is7xx_setup_mctrl_ports(struct sc16is7xx_port *s,
 	int i;
 	int ret;
 	int count;
-	u32 mctrl_port[2];
+	u32 mctrl_port[SC16IS7XX_MAX_PORTS];
 	struct device *dev = s->p[0].port.dev;
 
 	count = device_property_count_u32(dev, "nxp,modem-control-line-ports");
@@ -1727,7 +1728,7 @@ static unsigned int sc16is7xx_regmap_port_mask(unsigned int port_id)
 static int sc16is7xx_spi_probe(struct spi_device *spi)
 {
 	const struct sc16is7xx_devtype *devtype;
-	struct regmap *regmaps[2];
+	struct regmap *regmaps[SC16IS7XX_MAX_PORTS];
 	unsigned int i;
 	int ret;
 
@@ -1798,7 +1799,7 @@ MODULE_ALIAS("spi:sc16is7xx");
 static int sc16is7xx_i2c_probe(struct i2c_client *i2c)
 {
 	const struct sc16is7xx_devtype *devtype;
-	struct regmap *regmaps[2];
+	struct regmap *regmaps[SC16IS7XX_MAX_PORTS];
 	unsigned int i;
 
 	devtype = i2c_get_match_data(i2c);