Halliday & Matthiessen (1999: 208):
Some qualities may occur as depictive (as opposed to resultative) Attribute in a figure of doing & happening; in such instances the quality is very close to a circumstance of Manner, as is shown by agnate pairs such as the following:
quality as Attribute: quality as Manner:
she came home cheerful she came home cheerfullyhe walked in drunk he walked in drunkenly