ERROR: code indent should use tabs where possible
ERROR: space required before the open parenthesis '('
WARNING: Use of volatile is usually wrong: see Documentation/process/volatile-considered-harmful.rst
WARNING: added, moved or deleted file(s), does MAINTAINERS need updating?
WARNING: externs should be avoided in .c files
WARNING: line length of 100 exceeds 80 columns
WARNING: line length of 84 exceeds 80 columns
WARNING: line length of 88 exceeds 80 columns
WARNING: line length of 89 exceeds 80 columns
WARNING: line length of 94 exceeds 80 columns
WARNING: please, no spaces at the start of a line