Matthew Garrett wrote:
AHCI exports various capability bits that may be of interest to userspace such as whether the BIOS claims a port is hotpluggable or eSATA. Providing these via sysfs along with the version of the AHCI spec implemented by the host allows userspace to make policy decisions for things like ALPM. Signed-off-by: Matthew Garrett <mjg@xxxxxxxxxx>
I would prefer a better-yet-more-general interface, but I don't think one will appear anytime soon, so...
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