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Date: Fri, 27 Sep 2013 13:14:31 +0300
From: Ivan Klymenko <fidaj@ukr.net>
To: FreeBSD CURRENT <freebsd-current@freebsd.org>
Subject: kernel: ahcich1: Timeout on slot 0 port 0
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Hello all
After the upgrade, with a revision r255868 to revision r255882
I have the following problem:
.....
Sep 27 12:49:01 nonamehost kernel: ahcich1: Timeout on slot 0 port 0
Sep 27 12:49:01 nonamehost kernel: ahcich1: is 00000000 cs 00000001 ss 00000000 rs 00000001 tfd d0 serr 00000000 cmd 0000c017
Sep 27 12:49:01 nonamehost kernel: ahcich1: Timeout on slot 0 port 0
Sep 27 12:49:01 nonamehost kernel: ahcich1: is 00000000 cs 00000001 ss 00000000 rs 00000001 tfd d0 serr 00000000 cmd 0000c017
Sep 27 12:49:01 nonamehost kernel: ahcich1: Timeout on slot 0 port 0
Sep 27 12:49:01 nonamehost kernel: ahcich1: is 00000000 cs 00000001 ss 00000000 rs 00000001 tfd d0 serr 00000000 cmd 0000c017
Sep 27 12:49:01 nonamehost kernel: ahcich1: Timeout on slot 0 port 0
Sep 27 12:49:01 nonamehost kernel: ahcich1: is 00000000 cs 00000003 ss 00000000 rs 00000003 tfd d0 serr 00000000 cmd 0000c017
......
many messages

In what could be the reason?

FreeBSD 10.0-ALPHA3 #0 r255882

Thank you.