[Bug 243401] [patch] ahci driver problems with Marvell 88SE9230 (Dell BOSS-S1)

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=243401

--- Comment #7 from Peter Eriksson <pen at lysator.liu.se> ---
Btw, I noticed one other little thing while reading the source code for ahci.c:

ahci_start(ch, fbs) gets called with fbs=1 in all spots in the code, except one
spot in ahci_execute_transaction() around line 1650 or so when it receives an
ATA_A_RESET - then it sets fbs to 0 (zero). If I'm reading the code correctly
then this would cause "FIS-based switched" to be disabled from that time on -
if that ever happens? 

Just for testing I changed that to 1 - but I don't see much of a difference in
behaviour. Granted I haven't tested _that_ much. Probably unrelated to this
issue anyway.

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