CHECK: Prefer using the BIT macro
CHECK: spaces preferred around that '<<' (ctx:VxV)
WARNING: From:/Signed-off-by: email address mismatch: 'From: Qingtao Cao <qingtao.cao.au@gmail.com>' != 'Signed-off-by: Qingtao Cao <qingtao.cao@digi.com>'
WARNING: line length of 81 exceeds 80 columns