linux-kernel - Re: Regression: kernel 2.6.24{,.1} ahci problem, does not boot

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Message-ID: <487B403F.5040704@gmail.com>
Date:	Mon, 14 Jul 2008 21:02:07 +0900
From:	Tejun Heo <htejun@...il.com>
To:	Piter PUNK <piterpunk@...ckware.com>
CC:	linux-kernel@...r.kernel.org, Jeff Garzik <jeff@...zik.org>,
	IDE/ATA development list <linux-ide@...r.kernel.org>
Subject: Re: Regression: kernel 2.6.24{,.1} ahci problem, does not boot

Piter PUNK wrote:
> I have a notebook with SiS968. It works with 2.6.23.x
> kernels but not with 2.6.24+ kernels. Probably my
> problem is the same of this old thread:
> 
> http://lkml.org/lkml/2008/2/14/263
> 
> The error is exactly the same.
> 
> Looking the changes from 2.6.23 to 2.6.24 in
> 
> http://kernelnewbies.org/Linux_2_6_24#head-f29764e7ef293be84e2f8aa1b08b8816b15ebfca
> 
> I try to revert two commits to see which one brokes
> my SATA device support. The guilt is this one:
> 
> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=7d50b60b5e38f910ad69f0187af00f5d6a8970d4
> 
> It implements PMP support. In attached patch, I
> disable PMP support in ahci.c to SiS SATA controllers.
> 
> I hope i am sending the patch to correct place and
> it works fine to others (well, it's working to me).

This change made into the kernel in commit 9a3b103c...  Today, I
tested a SIS968 board whose lspci -nn output looks like the following.

  00:00.0 Host bridge [Class 0600]: Silicon Integrated Systems [SiS] 671MX [1039:0671]
  00:01.0 PCI bridge [Class 0604]: Silicon Integrated Systems [SiS] PCI-to-PCI bridge [1039:0004]
  00:02.0 ISA bridge [Class 0601]: Silicon Integrated Systems [SiS] SiS968 [MuTIOL Media IO] [1039:0968] (rev 01)
  00:02.5 IDE interface [Class 0101]: Silicon Integrated Systems [SiS] 5513 [IDE] [1039:5513] (rev 01)
  00:03.0 USB Controller [Class 0c03]: Silicon Integrated Systems [SiS] USB 1.0 Controller [1039:7001] (rev 0f)
  00:03.1 USB Controller [Class 0c03]: Silicon Integrated Systems [SiS] USB 1.0 Controller [1039:7001] (rev 0f)
  00:03.3 USB Controller [Class 0c03]: Silicon Integrated Systems [SiS] USB 2.0 Controller [1039:7002]
  00:04.0 Ethernet controller [Class 0200]: Silicon Integrated Systems [SiS] 191 Gigabit Ethernet Adapter [1039:0191] (rev 02)
  00:05.0 SATA controller [Class 0106]: Silicon Integrated Systems [SiS] AHCI IDE Controller (0106) [1039:1185] (rev 03)
  00:06.0 PCI bridge [Class 0604]: Silicon Integrated Systems [SiS] PCI-to-PCI bridge [1039:000a]
  00:07.0 PCI bridge [Class 0604]: Silicon Integrated Systems [SiS] PCI-to-PCI bridge [1039:000a]
  00:0d.0 VGA compatible controller [Class 0300]: ATI Technologies Inc Radeon RV100 QZ [Radeon 7000/VE] [1002:515a]
  00:0f.0 Audio device [Class 0403]: Silicon Integrated Systems [SiS] Azalia Audio Controller [1039:7502]
  00:10.0 RAID bus controller [Class 0104]: HighPoint Technologies, Inc. HPT372A/372N [1103:0005] (rev 02)
  02:00.0 Ethernet controller [Class 0200]: Intel Corporation 82572EI Gigabit Ethernet Controller (Copper) [8086:10b9] (rev 06)

And the AHCI controller 1039:1185 @ 00:05.0 works just fine with
regular devices and PMPs.  Can you please post lspci -nn output on
your machine?  It seems the blacklisting was too wide.

Thanks.

-- 
tejun
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