copying folder in /usr/src/linux-headers/driver/staging

[Time]

I need to copy certain folder in /usr/src/linux-heasders/drivers/staging directory.
Attempts made are:

1.cp command:with and without -t option.
output:file omitted

2chmod a+wx directory name:
output: Permission denied.

3.sudo cp source destination:
output:file omitted.

[Time]

Finished copying.
Solution:
sudo chmod a+w folder name.