四级萌新也想成为大佬

@ysc3650145 检查一下脚本权限

@ysc3650145 可以贴10-tf.rules和两个脚本的代码出来看看吗？

@ysc3650145 udisk是剩余内存大小自动全部分配的，你可以修改sys_partition.fex，把rootfs的改大，这样分配给udisk就变小了。

@ysc3650145 我选的是buildroot构建的文件系统，我修改这个路径下的文件才会生效 device/config/chips/t113_s4/configs/evb1_auto_nand/buildroot/sys_partition.fex，而修改这个路径下的文件是不生效的device/config/chips/t113_s4/configs/evb1_auto_nand/linux-5.4/sys_partition.fex，你看看是不是这个原因。

串口信息如下：

# cat /sys/devices/platform/soc@3000000/2500000.uart/ctrl_info
 ier  : 0x00
 lcr  : 0x00
 mcr  : 0x00
 fcr  : 0x00
 dll  : 0x4e
 dlh  : 0x00
 last baud : 19230 (dl = 78)

TxRx Statistics:
 tx     : 4443
 rx     : 3874
 parity : 87
 frame  : 52
 overrun: 0
 throttled: 0
# cat /sys/devices/platform/soc@3000000/2500000.uart/dev_info
id     = 0
name   = uart0
irq    = 33
io_num = 2
port->mapbase = 0x02500000
port->membase = 0x2067c9f1
port->iobase  = 0x00000000
port->fifosize = 64
pdata->regulator    = 0x1d5654ac
pdata->regulator_id = vcc-rs485
#
#
# cat /sys/devices/platform/soc@3000000/2500000.uart/ctrl_info
 ier  : 0x05
 lcr  : 0x1b
 mcr  : 0x03
 fcr  : 0xb1
 dll  : 0x08
 dlh  : 0x00
 last baud : 187500 (dl = 8)

TxRx Statistics:
 tx     : 20313
 rx     : 15366
 parity : 225
 frame  : 123
 overrun: 0
 throttled: 0
#

如题，这个波特率是在哪里作出了限制吗？应该怎么修改？

使用T113-s3进行开发，设备上没有phy芯片，要连接网络需要使用usb转网口的外接设备，在没有接入usb转网口的外设时，应用使用socket接口，即便系统返回错误也继续重复连接，系统运行了几天以后内核就会因为内存不足出现oom-killer把该应用kill掉，如果插上外设但没插入网线并不会出现这种情况。对于上述问题应该怎么处理呢？

四级萌新也想成为大佬

@ysc3650145 可以贴10-tf.rules和两个脚本的代码出来看看吗？

@ysc3650145 检查一下脚本权限

@ysc3650145 我选的是buildroot构建的文件系统，我修改这个路径下的文件才会生效 device/config/chips/t113_s4/configs/evb1_auto_nand/buildroot/sys_partition.fex，而修改这个路径下的文件是不生效的device/config/chips/t113_s4/configs/evb1_auto_nand/linux-5.4/sys_partition.fex，你看看是不是这个原因。

@ysc3650145 udisk是剩余内存大小自动全部分配的，你可以修改sys_partition.fex，把rootfs的改大，这样分配给udisk就变小了。

@shuaige 想问一下这些参数如何在设备树里面修改?我想直接烧录以后就不需要改动参数了。

我发现是有个开机脚本给切换了...

#!/bin/sh
#
# Start the adbd....
#

# config adb serialnumber for adb devices
adb_serialnumber=/etc/.adb_sn

disable_udc="/etc/.disable_udc"
udc_config=/sys/kernel/config/usb_gadget/g1/UDC

otg_role_file="/sys/devices/platform/soc/usbc0/otg_role"
usb_device_file="/sys/devices/platform/soc/usbc0/usb_device"
hardware_type=`cat /proc/cmdline | tr ' ' '\n' | grep 'hardware' | awk -F "=" '{print $2}'`

function enable_udc(){
	while [ 1 ];do
		udc=`ls /sys/class/udc 2>/dev/null`
		isudc=`cat $udc_config 2>/dev/null`
		if [ "x$isudc" = "x" ] && [ -f $udc_config ]; then
			echo $udc > $udc_config
		fi
		sleep 1
		if [ -f $disable_udc ];then
			rm $disable_udc
			break
		fi
	done
}

function start_adb(){
	serialnumber=$1
	if [ "x$serialnumber" = "x" ];then
		serialnumber="0402101560"
	fi
	printf "Starting adb: "
	# for adbd compatibilities
	mkdir -p /system/
	mkdir -p /system/bin
	if [ ! -f /system/bin/sh ];then
		ln -s /bin/sh /system/bin/sh
	fi

	# config ptmx
	mkdir -p /dev/pts
	mount -t devpts none /dev/pts

	# config adb function
	mount -t configfs none /sys/kernel/config > /dev/null 2>&1
	mkdir -p /sys/kernel/config/usb_gadget/g1
	echo "0x18d1" > /sys/kernel/config/usb_gadget/g1/idVendor
	echo "0x0002" > /sys/kernel/config/usb_gadget/g1/idProduct
	mkdir -p /sys/kernel/config/usb_gadget/g1/strings/0x409
	echo "$serialnumber" > /sys/kernel/config/usb_gadget/g1/strings/0x409/serialnumber
	echo "Google.Inc" > /sys/kernel/config/usb_gadget/g1/strings/0x409/manufacturer
	echo "Configfs ffs gadget" > /sys/kernel/config/usb_gadget/g1/strings/0x409/product
	mkdir -p /sys/kernel/config/usb_gadget/g1/functions/ffs.adb
	mkdir -p /sys/kernel/config/usb_gadget/g1/configs/c.1
	mkdir -p /sys/kernel/config/usb_gadget/g1/configs/c.1/strings/0x409
	echo 0xc0 > /sys/kernel/config/usb_gadget/g1/configs/c.1/bmAttributes
	echo 500 > /sys/kernel/config/usb_gadget/g1/configs/c.1/MaxPower
	ln -s /sys/kernel/config/usb_gadget/g1/functions/ffs.adb/ /sys/kernel/config/usb_gadget/g1/configs/c.1/ffs.adb > /dev/null 2>&1
	mkdir -p /dev/usb-ffs
	mkdir -p /dev/usb-ffs/adb
	if [ "x`ls -A /dev/usb-ffs/adb`" = "x" ];then
		mount -o uid=2000,gid=2000 -t functionfs adb /dev/usb-ffs/adb/
	fi

	# start adbd daemon
	adbd &
	[ $? -eq 0 ] && echo "OK" || "FAIL"

	# enable_udc &
}

case "$1" in
	start|"")
		if [ "x$hardware_type" = "xsun8iw11p1" ];then
			otg_role_file="/sys/devices/platform/soc@1c00000/soc@1c00000:usbc0@0/otg_role"
		elif [ "x$hardware_type" = "xsun8iw20p1" ];then
			otg_role_file="/sys/devices/platform/soc@3000000/soc@3000000:usbc0@0/otg_role"
		fi
		[ -f "$otg_role_file" ] && otg_role=`cat "$otg_role_file"`
		echo "usb0 current mode: $otg_role"
		if [ -f "$otg_role_file" ] && [ "x$otg_role" != "xusb_device" ];then
			# force switch usb0 to device mode
			echo "Starting switch usb0 to device mode."
			if [ "x$hardware_type" = "xsun8iw11p1" ];then
				usb_device_file="/sys/devices/platform/soc@1c00000/soc@1c00000:usbc0@0/usb_device"
			elif [ "x$hardware_type" = "xsun8iw20p1" ];then
				usb_device_file="/sys/devices/platform/soc@3000000/soc@3000000:usbc0@0/usb_device"
			fi
			[ -f "$usb_device_file" ] && cat $usb_device_file
		fi
		[ -f $adb_serialnumber ] && serialnumber=`cat $adb_serialnumber`
		if [ "x$serialnumber" = "x" ];then
			serialnumber=`cat /proc/cmdline | tr ' ' '\n' | grep 'snum' | awk -F "=" '{print $2}'`
		fi
		start_adb $serialnumber
		;;
	stop)
		printf "Stopping adbd "
		# touch $disable_udc
		# sleep 2
		killall adbd &
		[ $? -eq 0 ] && echo "OK" || "FAIL"
		;;
	restart|reload)
		"$0" stop
		"$0" start
		;;
	*)
		echo "Usage: $0 {start|stop|restart}"
		exit 1
		;;
esac