驱动加载失败Unknown symbol device_create (err -22)

爱跑步的雯雯

[  506.897570] dtsled: disagrees about version of symbol device_create
[  506.903846] dtsled: Unknown symbol device_create (err -22)
[  506.909398] dtsled: disagrees about version of symbol device_destroy
[  506.915755] dtsled: Unknown symbol device_destroy (err -22)
modprobe: can't load module dtsled.ko (dtsled.ko): Invalid argument
字符设备驱动有效

设备树下led驱动加载失败
做字符设备和linux led驱动的时候还行的，然后鑫字符led驱动和设备树led驱动就说驱动加载失败了

爱跑步的雯雯

解决了，把内核重新编译一遍，把zimage和system.dtb文件重新编译好放到sd卡的boot里，再在新编译的内核下重新make .ko模块，传输到板上，modprobe就成功了