From: Bjorn Helgaas <helgaas@kernel.org>
To: Zvika Vered <veredz72@gmail.com>
Cc: linux-pci@vger.kernel.org
Subject: Re: [Bug 216555] New: Kernel 4.19.135: pci_resource_start, pci_resource_len return wrong value
Date: Tue, 25 Oct 2022 12:49:21 -0500 [thread overview]
Message-ID: <20221025174921.GA660689@bhelgaas> (raw)
In-Reply-To: <20221005165358.GA2298432@bhelgaas>
On Wed, Oct 05, 2022 at 11:53:58AM -0500, Bjorn Helgaas wrote:
> On Wed, Oct 05, 2022 at 01:00:58PM +0000, bugzilla-daemon@kernel.org wrote:
> > https://bugzilla.kernel.org/show_bug.cgi?id=216555
> > Summary: Kernel 4.19.135: pci_resource_start, pci_resource_len
> > return wrong value
>
> > I used 4.19.135(x64) + rootfs (buildroot) to boot an x86 SBC.
> > This SBC is connected via PCIe to a customized PCIe IO card.
> >
> > In the kernel module, I used pci_resource_start, pci_resource_len to find
> > start, length of 3 BARs.
> > It worked fine.
> >
> > Then I used the same kernel, kernel module on another x86 SBC.
> > In this SBC, pci_resource_start, pci_resource_len returned wrong data.
> > I booted this SBC with Centos 8.2 (4.18) and also with vanilla 4.9.20.
> > It worked fine.
> >
> > Is it possible that 4.19.135 has a BUG ?
>
> It's unlikely that pci_resource_start() and pci_resource_len() are
> broken in 4.19.135, but I guess anything is possible.
>
> Can you give any more details about why it seems broken? Dmesg logs
> of a boot that fails and one that works, for instance?
I see that you attached a dmesg log and some more details to the
bugzilla, thank you!
I don't see "AdtIoInit" in the kernel tree, and I can't match the
[1172:0001] with anything. Can you also attach the driver source to
the bugzilla?
Bjorn
prev parent reply other threads:[~2022-10-25 17:49 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <bug-216555-41252@https.bugzilla.kernel.org/>
2022-10-05 16:53 ` [Bug 216555] New: Kernel 4.19.135: pci_resource_start, pci_resource_len return wrong value Bjorn Helgaas
2022-10-25 17:49 ` Bjorn Helgaas [this message]
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