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-build driver modules
make
-install driver modules
make install
-remove driver modules
make clean
-dynamic debug message
turn on CONFIG_DYNAMIC_DEBUG compiler flag for current kernel
mount -t debugfs none /sys/kernel/debug/
echo "module module_name +p" > /sys/kernel/debug/dynamic_debug/control(turn on debug messages, module name such as btmtk_usb)
echo "module module_name -p" > /sys/kernel/debug/dynamic_debug/control(turn off debug messages, module name such as btmtk_usb)
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