From 6ac5144b13dd2c43f83deb715a9a2487f87d3c46 Mon Sep 17 00:00:00 2001 From: Michael Heimpold Date: Sat, 9 Mar 2019 09:44:35 +0100 Subject: [PATCH] mxs: disable unused serial drivers This disables PL010 and 8250 serial support for this platform as both drivers are not used: the debug UART is PL011 and the application UARTs use a dedicated MXS specific driver. The kernel size reduction is neglectable, but it also removes the non-working (confusing) /dev/ttyS0 and /dev/ttyS1 devices in a running system (which generate errors when trying to use): root@OpenWrt:~# echo "hello world" > /dev/ttyS0 ash: write error: I/O error root@OpenWrt:~# Signed-off-by: Michael Heimpold --- target/linux/mxs/config-4.14 | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/target/linux/mxs/config-4.14 b/target/linux/mxs/config-4.14 index 43d6a59bae..abad1807cd 100644 --- a/target/linux/mxs/config-4.14 +++ b/target/linux/mxs/config-4.14 @@ -262,9 +262,7 @@ CONFIG_RTC_MC146818_LIB=y CONFIG_RWSEM_XCHGADD_ALGORITHM=y # CONFIG_SCHED_INFO is not set # CONFIG_SCSI_DMA is not set -CONFIG_SERIAL_8250_FSL=y -CONFIG_SERIAL_AMBA_PL010=y -CONFIG_SERIAL_AMBA_PL010_CONSOLE=y +# CONFIG_SERIAL_8250 is not set CONFIG_SERIAL_AMBA_PL011=y CONFIG_SERIAL_AMBA_PL011_CONSOLE=y CONFIG_SERIAL_MCTRL_GPIO=y