linux-kernel - RE: [PATCH] PCI/Layerscape: fix wrongly invoking of outbound window disable accessor

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <AM3PR04MB121709BD837D4E5EA3E28B1A84F00@AM3PR04MB1217.eurprd04.prod.outlook.com>
Date:   Fri, 26 Oct 2018 02:20:21 +0000
From:   "Z.q. Hou" <zhiqiang.hou@....com>
To:     Bjorn Helgaas <helgaas@...nel.org>
CC:     "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "bhelgaas@...gle.com" <bhelgaas@...gle.com>,
        "lorenzo.pieralisi@....com" <lorenzo.pieralisi@....com>,
        Roy Zang <roy.zang@....com>,
        "M.h. Lian" <minghuan.lian@....com>
Subject: RE: [PATCH] PCI/Layerscape: fix wrongly invoking of outbound window
 disable accessor

Hi Bjorn,

Thanks a lot for your comments!

> -----Original Message-----
> From: Bjorn Helgaas <helgaas@...nel.org>
> Sent: 2018年10月25日 21:45
> To: Z.q. Hou <zhiqiang.hou@....com>
> Cc: linux-pci@...r.kernel.org; linux-kernel@...r.kernel.org;
> bhelgaas@...gle.com; lorenzo.pieralisi@....com; Roy Zang
> <roy.zang@....com>; M.h. Lian <minghuan.lian@....com>
> Subject: Re: [PATCH] PCI/Layerscape: fix wrongly invoking of outbound
> window disable accessor
> 
>   $ git log --oneline --follow drivers/pci/controller/dwc/pci-layerscape.c |
> head
>   6e0832fa432e PCI: Collect all native drivers under drivers/pci/controller/
>   3f43ccc4ea1b PCI: dwc: Remove old MSI IRQs API
>   8cfab3cf63cf PCI: Add SPDX GPL-2.0 to replace GPL v2 boilerplate
>   84d897d69938 PCI: layerscape: Change default error response behavior
>   a335b122ba27 PCI: layerscape: Add support for ls1012a
>   03fc6134c260 PCI: layerscape: Add support for ls1088a
>   8f89357094e6 PCI: layerscape: Add support for ls2088a
>   c3f909398827 PCI: layerscape: Remove unnecessary class code fixup
>   e44abfed6fcb PCI: dwc: Add accessors for write permission of DBI
> read-only registers
>   4a2745d760fa PCI: layerscape: Disable outbound windows configured by
> bootloader
> 
> Make yours match, e.g., "PCI: layerscape: Call dw_pcie_disable_atu()
> correctly"
> 

Yes, will uniform the subject in v2.

> On Thu, Oct 25, 2018 at 08:53:37AM +0000, Z.q. Hou wrote:
> > From: Hou Zhiqiang <Zhiqiang.Hou@....com>
> >
> > This issue is introduced by commit 4a2745d760fac ("PCI: layerscape:
> > Disable outbound windows configured by bootloader").
> 
> Conventional commit reference:
> 
>   $ git --no-pager show -s --abbrev-commit --abbrev=12 --pretty=format:"%h
> (\"%s\")%n" 4a2745d760fac
>   4a2745d760fa ("PCI: layerscape: Disable outbound windows configured by
> bootloader")
> 

Will correct the commit ID length.

> Holy cow, this has been broken since v4.14.  If fixing this makes a difference,
> you might want to tag it for stable.
> 

How can I tag it for stable?

> > Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@....com>
> > ---
> >  drivers/pci/controller/dwc/pci-layerscape.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/drivers/pci/controller/dwc/pci-layerscape.c
> > b/drivers/pci/controller/dwc/pci-layerscape.c
> > index 69f3f1a5a782..b2085988dbee 100644
> > --- a/drivers/pci/controller/dwc/pci-layerscape.c
> > +++ b/drivers/pci/controller/dwc/pci-layerscape.c
> > @@ -88,7 +88,7 @@ static void ls_pcie_disable_outbound_atus(struct
> ls_pcie *pcie)
> >  	int i;
> >
> >  	for (i = 0; i < PCIE_IATU_NUM; i++)
> > -		dw_pcie_disable_atu(pcie->pci, DW_PCIE_REGION_OUTBOUND, i);
> > +		dw_pcie_disable_atu(pcie->pci, i, DW_PCIE_REGION_OUTBOUND);
> >  }
> >
> >  static int ls1021_pcie_link_up(struct dw_pcie *pci)
> > --
> > 2.17.1
> >

Thanks,
Zhiqiang