| Message ID | 20190309084435.10111-1-mhei@heimpold.de |
|---|---|
| State | Accepted, archived |
| Delegated to: | Zoltan HERPAI |
| Headers | show |
| Series | [OpenWrt-Devel] mxs: disable unused serial drivers | expand |
Michael Heimpold wrote: > 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 <mhei@heimpold.de> > Thanks Michael, I've checked this on an iMX233-Olinuxino-Maxi, patch was applied to master. Thanks, Zoltan H
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
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 <mhei@heimpold.de> --- target/linux/mxs/config-4.14 | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-)