linux-kernel - [PATCH 07/18] serial: max310x: add macro for max number of ports

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Date: Wed, 17 Jan 2024 17:38:45 -0500
From: Hugo Villeneuve <hugo@...ovil.com>
To: gregkh@...uxfoundation.org,
	jirislaby@...nel.org,
	cosmin.tanislav@...log.com,
	andy.shevchenko@...il.com,
	shc_work@...l.ru
Cc: linux-kernel@...r.kernel.org,
	linux-serial@...r.kernel.org,
	hugo@...ovil.com,
	Hugo Villeneuve <hvilleneuve@...onoff.com>,
	Jan Kundrát <jan.kundrat@...net.cz>
Subject: [PATCH 07/18] serial: max310x: add macro for max number of ports

From: Hugo Villeneuve <hvilleneuve@...onoff.com>

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

Reviewed-by: Jan Kundrát <jan.kundrat@...net.cz>
Tested-by: Jan Kundrát <jan.kundrat@...net.cz>
Link: https://lore.kernel.org/all/ddbc67dd-f8a3-4a6a-954a-bee49260ecab@cesnet.cz/
Signed-off-by: Hugo Villeneuve <hvilleneuve@...onoff.com>
---
 drivers/tty/serial/max310x.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/tty/serial/max310x.c b/drivers/tty/serial/max310x.c
index 21f2fa3a91e5..6549eee4f6a6 100644
--- a/drivers/tty/serial/max310x.c
+++ b/drivers/tty/serial/max310x.c
@@ -30,6 +30,7 @@
 #define MAX310X_MAJOR			204
 #define MAX310X_MINOR			209
 #define MAX310X_UART_NRMAX		16
+#define MAX310X_MAX_PORTS		4 /* Maximum number of UART ports per IC. */
 
 /* MAX310X register definitions */
 #define MAX310X_RHR_REG			(0x00) /* RX FIFO */
@@ -1502,7 +1503,7 @@ static const struct max310x_if_cfg __maybe_unused max310x_spi_if_cfg = {
 static int max310x_spi_probe(struct spi_device *spi)
 {
 	const struct max310x_devtype *devtype;
-	struct regmap *regmaps[4];
+	struct regmap *regmaps[MAX310X_MAX_PORTS];
 	unsigned int i;
 	int ret;
 
@@ -1604,7 +1605,7 @@ static int max310x_i2c_probe(struct i2c_client *client)
 {
 	const struct max310x_devtype *devtype;
 	struct i2c_client *port_client;
-	struct regmap *regmaps[4];
+	struct regmap *regmaps[MAX310X_MAX_PORTS];
 	unsigned int i;
 	u8 port_addr;
 
-- 
2.39.2