Resolve disagrees about version of symbol device_ create

Learning punctual atom led Drive migration , The following error occurs ：

modprobe newchrled.ko 
newchrled: disagrees about version of symbol device_create
newchrled: Unknown symbol device_create (err -22

The methods given in the reference manual are relatively general , As shown in the figure below , Now give the specific steps

Solve the core idea ： The kernel version is inconsistent with the module version, resulting in , It can be solved by changing the version to be consistent .

1 View network mounted uboot Environmental Science , Ensure that the compiled zImage And the device tree can be downloaded normally

2 recompile linux kernel , The order is ./mx6ull_alientek_emmc.sh

3 Find device tree and zImage, And copy it to nfs and tftpboot Next

4 Modify the driver configuration and Makefile, The path must be consistent

 "/home/ws/linux/IMX6ULL/linux/linux-imx-rel_imx_4.1.15_2.1.0_ga_alientek/include", 
 "/home/ws/linux/IMX6ULL/linux/linux-imx-rel_imx_4.1.15_2.1.0_ga_alientek/arch/arm/include", 
 "/home/ws/linux/IMX6ULL/linux/linux-imx-rel_imx_4.1.15_2.1.0_ga_alientek/arch/arm/include/generated/"

5 compile , Copy to the development board

6 Restart the development board , Jump to the specified directory , function ,OK