sony-laptop: add fan speed regulation function
sony-laptop: add fan speed regulation function

Rework error exit logic by Mattia Dongili.

Signed-off-by: Javier Achirica <21b0e975bdce1ce0de9b01bf0e77f5c9e7f415ec@gmail.com>
Signed-off-by: Mattia Dongili <564ea3fba55f6e029e83434fb6b3f3b9c7ed334e@linux.it>
Signed-off-by: Matthew Garrett <d1dada306f6f6bc535ec5238317ee8d221588a1a@nebula.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs