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Revision a58b8d54


Added by Christoph Hellwig about 11 years ago

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 <>
Signed-off-by: Kevin Wolf <>


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