tree e325b5f7818062aadec21ef035140d169205bbc4
parent 9b036055ef65d0ab3236dfdb0d07828cea961133
author Christoph Hellwig <hch@lst.de> 1286198981 +0200
committer Kevin Wolf <kwolf@redhat.com> 1287751775 +0200

ide: set WCACHE supported in IDENTIFY data

ATA does not only have the WCACHE enabled bit in identify word 85, but also
a WCACHE supported bit in word 82.  While the Linux kernel is fine with the
latter at least hdparm also needs the former before correctly displaying
the cache settings.  There's also a non-zero chance other operating systems
are more picky in their volatile write cache detection.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>