From: Amit Gud <amitg@calsoftinc.com>

Patch follows from the suggestions by AC and Felipe W Damasio for fixing the
return codes from IDE drivers.

[ bart: fix coding style while at it ]
Signed-off-by: NAmit Gud <gud@eth.net>
Signed-off-by: NDomen Puncer <domen@coderock.org>
Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>