Re: Proposed changes for libata speed handling

[Jeff Garzik]

BTW, for a solution to be complete, we need to halt all work on all 
other ports, when issuing SET FEATURES - XFER MODE.  On SiI and Promise 
controllers, possibly others, the command is snooped and side effects 
such as register setting occur.

Long standing to-do.  Currently we hack around this by serializing the 
bus probe, and preventing people from issuing SET FEATURES - XFER MODE 
from userspace.

	Jeff



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