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From: Bjorn Helgaas <bjorn.helgaas@hp.com>
To: Yinghai Lu <yinghai.lu@oracle.com>
Cc: Graham Ramsey <ramsey.graham@ntlworld.com>,
	Jesse Barnes <jbarnes@virtuousgeek.org>,
	linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org,
	bugzilla-daemon@bugzilla.kernel.org,
	Myron Stowe <myron.stowe@hp.com>,
	Robert Richter <robert.richter@amd.com>,
	Harald Welte <HaraldWelte@viatech.com>,
	Joseph Chan <JosephChan@via.com.tw>
Subject: Re: [Bug 16007] x86/pci Oops with CONFIG_SND_HDA_INTEL
Date: Mon, 14 Jun 2010 08:18:39 -0600	[thread overview]
Message-ID: <201006140818.39599.bjorn.helgaas@hp.com> (raw)
In-Reply-To: <4C12C189.50201@oracle.com>

On Friday, June 11, 2010 05:06:49 pm Yinghai Lu wrote:
> 
> please check if this one workaround the problem
> 
> Thanks
> 
> Yinghai Lu
> 
> [PATCH] x86, pci: handle fallout pci devices with peer root bus
> 
> Signed-off-by: Yinghai Lu <yinghai@kernel.org>

This patch apparently does cover up the problem, but it fails on
so many levels:

  - incomprehensible summary
  - no changelog
  - no bugzilla pointer
  - unrelated junk in patch ("tmp")
  - completely unexplained change to generic resource.c
  - no indication that we understand the root cause

> ---
>  arch/x86/pci/bus_numa.c |    4 +++-
>  kernel/resource.c       |    2 +-
>  2 files changed, 4 insertions(+), 2 deletions(-)
> 
> Index: linux-2.6/arch/x86/pci/bus_numa.c
> ===================================================================
> --- linux-2.6.orig/arch/x86/pci/bus_numa.c
> +++ linux-2.6/arch/x86/pci/bus_numa.c
> @@ -22,7 +22,8 @@ void x86_pci_root_bus_res_quirks(struct
>  		return;
>  
>  	for (i = 0; i < pci_root_num; i++) {
> -		if (pci_root_info[i].bus_min == b->number)
> +		if (pci_root_info[i].bus_min <= b->number &&
> +		    pci_root_info[i].bus_max >= b->number)
>  			break;
>  	}
>  
> @@ -37,6 +38,7 @@ void x86_pci_root_bus_res_quirks(struct
>  	for (j = 0; j < info->res_num; j++) {
>  		struct resource *res;
>  		struct resource *root;
> +		struct resource *tmp;
>  
>  		res = &info->res[j];
>  		pci_bus_add_resource(b, res, 0);
> Index: linux-2.6/kernel/resource.c
> ===================================================================
> --- linux-2.6.orig/kernel/resource.c
> +++ linux-2.6/kernel/resource.c
> @@ -451,7 +451,7 @@ static struct resource * __insert_resour
>  		if (!first)
>  			return first;
>  
> -		if (first == parent)
> +		if (first == parent || first == new)
>  			return first;
>  
>  		if ((first->start > new->start) || (first->end < new->end))
> 

  reply	other threads:[~2010-06-14 14:18 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-05-19 15:13 x86/pci Oops with CONFIG_SND_HDA_INTEL Graham Ramsey
2010-05-19 16:44 ` Bjorn Helgaas
2010-05-19 17:16   ` Graham Ramsey
2010-05-19 18:01     ` Yinghai
2010-05-19 22:47       ` Graham Ramsey
2010-05-20  0:03         ` Yinghai
2010-05-20  0:22           ` Jesse Barnes
2010-05-20  0:36             ` Yinghai
2010-05-20 17:08               ` [Bug 16007] " Bjorn Helgaas
2010-06-02 16:58                 ` Bjorn Helgaas
2010-06-11 21:49                   ` Bjorn Helgaas
2010-06-11 22:08                     ` Yinghai Lu
2010-06-11 23:06                     ` Yinghai Lu
2010-06-14 14:18                       ` Bjorn Helgaas [this message]
2010-06-14 17:47                       ` [PATCH -v2] x86, pci: Handle fallout pci devices with peer root bus Yinghai Lu
2010-06-14 18:14                         ` Jesse Barnes
2010-06-14 18:22                           ` Yinghai Lu
2010-06-14 18:34                         ` Bjorn Helgaas
2010-06-14 18:39                           ` H. Peter Anvin
2010-06-14 18:55                             ` Yinghai Lu
2010-06-14 20:00                               ` Bjorn Helgaas
2010-06-14 20:08                                 ` H. Peter Anvin
2010-06-14 20:20                                   ` Bjorn Helgaas
2010-06-14 21:10                                     ` H. Peter Anvin
2010-06-15  1:49                                       ` Bjorn Helgaas
2010-06-15  1:56                                         ` H. Peter Anvin
2010-06-15 15:30                                           ` Bjorn Helgaas
2010-06-14 19:43                             ` Bjorn Helgaas
2010-06-21 17:28                       ` [Bug 16007] x86/pci Oops with CONFIG_SND_HDA_INTEL Bjorn Helgaas
  -- strict thread matches above, loose matches on Subject: below --
2010-06-13 14:45 2.6.35-rc3: Reported regressions 2.6.33 -> 2.6.34 Rafael J. Wysocki
2010-06-13 14:49 ` [Bug #16007] x86/pci Oops with CONFIG_SND_HDA_INTEL Rafael J. Wysocki
2010-06-13 14:49   ` Rafael J. Wysocki
2010-06-20 22:32 2.6.35-rc3: Reported regressions 2.6.33 -> 2.6.34 Rafael J. Wysocki
2010-06-20 22:34 ` [Bug #16007] x86/pci Oops with CONFIG_SND_HDA_INTEL Rafael J. Wysocki
2010-07-10  0:24 2.6.35-rc4-git4: Reported regressions 2.6.33 -> 2.6.34 Rafael J. Wysocki
2010-07-10  0:33 ` [Bug #16007] x86/pci Oops with CONFIG_SND_HDA_INTEL Rafael J. Wysocki
2010-07-23 12:11 2.6.35-rc6: Reported regressions 2.6.33 -> 2.6.34 Rafael J. Wysocki
2010-07-23 12:15 ` [Bug #16007] x86/pci Oops with CONFIG_SND_HDA_INTEL Rafael J. Wysocki
2010-07-23 12:15   ` Rafael J. Wysocki
2010-07-23 14:20   ` Bjorn Helgaas
2010-07-23 19:51     ` Rafael J. Wysocki
2010-08-01 14:27 2.6.35-rc6-git6: Reported regressions 2.6.33 -> 2.6.34 Rafael J. Wysocki
2010-08-01 14:44 ` [Bug #16007] x86/pci Oops with CONFIG_SND_HDA_INTEL Rafael J. Wysocki

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