From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: Unknown SATA PIIX PCI device ID 0x29b6 Date: Mon, 10 Mar 2008 09:50:52 +0900 Message-ID: <47D485EC.1060103@gmail.com> References: <20080228225603.2764bfd1@core> <47CFADDF.20200@gmail.com> <47D0C9E6.8090301@gmail.com> <47D3723B.3040700@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from wf-out-1314.google.com ([209.85.200.175]:47921 "EHLO wf-out-1314.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751777AbYCJAu6 (ORCPT ); Sun, 9 Mar 2008 20:50:58 -0400 Received: by wf-out-1314.google.com with SMTP id 28so1610397wff.4 for ; Sun, 09 Mar 2008 17:50:57 -0700 (PDT) In-Reply-To: Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Guennadi Liakhovetski Cc: Alan Cox , linux-kernel@vger.kernel.org, Jeff Garzik , linux-ide@vger.kernel.org Guennadi Liakhovetski wrote: > On Sun, 9 Mar 2008, Tejun Heo wrote: > >> Guennadi Liakhovetski wrote: >>> On Fri, 7 Mar 2008, Tejun Heo wrote: >>> >>>>> Looks like almost a minute to me? On another occurence I see about 1.5 >>>>> minutes, then "port is slow to respond, please be patient (Status 0x80)" >>>>> has been repeated 3 times. On cold-plug also 3 times, I think, about the >>>>> same time then (time is not updated in the log). >>>> I see. Does the attached patch make any difference? >>> diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c >>> index 4fbcce7..abebdcc 100644 >>> --- a/drivers/ata/libata-core.c >>> +++ b/drivers/ata/libata-core.c >>> @@ -6712,6 +6712,7 @@ int sata_link_init_spd(struct ata_link *link) >>> spd = (scontrol >> 4) & 0xf; >>> if (spd) >>> link->hw_sata_spd_limit &= (1 << spd) - 1; >>> + link->hw_sata_spd_limit = 1; >>> >>> ata_force_spd_limit(link); >>> >>> Hm, this would force 1.5Gbps on all ports and devices, right? Cannot I >>> just boot with "libata.force=4:1.5Gbps"? >> Yeap, you can do that. Wasn't sure you were using .25-rc or .24. > > Yctually it was 2.6.24 before, rebuilt 2.6.25-rc4, booted as above, it did > say: > > ata4: FORCE: PHY spd limit set to 1.5Gbps > > but hot-plugging the drive still took 50 seconds to recover. How about cold plugging? -- tejun