From 885692ae3c17e6ef3962c826eea6bcfe871d8e5a Mon Sep 17 00:00:00 2001 From: Nate Drude Date: Thu, 22 Dec 2022 08:56:34 -0600 Subject: [PATCH] tty: serial: fsl_lpuart: increase maximum uart_nr to eight Some SoCs like the i.MX93 have aliases for up to eight UARTs, see: https://github.com/torvalds/linux/blob/v6.1/arch/arm64/boot/dts/freescale/imx93.dtsi#L31-L38 Increase UART_NR from 6 to 8 to support lpuart7 and lpuart8 and avoid initialization failures like the following: [ 0.837146] fsl-lpuart 42690000.serial: serial6 out of range [ 0.842814] fsl-lpuart: probe of 42690000.serial failed with error -22 Signed-off-by: Nate Drude Reviewed-by: Sherry Sun Link: https://lore.kernel.org/r/20221222145634.2217793-1-nate.d@variscite.com Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/fsl_lpuart.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/tty/serial/fsl_lpuart.c b/drivers/tty/serial/fsl_lpuart.c index 63dff61..04fecff 100644 --- a/drivers/tty/serial/fsl_lpuart.c +++ b/drivers/tty/serial/fsl_lpuart.c @@ -240,7 +240,7 @@ #define DRIVER_NAME "fsl-lpuart" #define DEV_NAME "ttyLP" -#define UART_NR 6 +#define UART_NR 8 /* IMX lpuart has four extra unused regs located at the beginning */ #define IMX_REG_OFF 0x10 -- 2.7.4