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

[Z.q. Hou]

Hi Bjorn,

Thanks a lot for your comments!

> -----Original Message-----
> From: Bjorn Helgaas <helgaas@xxxxxxxxxx>
> Sent: 2018年10月25日 21:45
> To: Z.q. Hou <zhiqiang.hou@xxxxxxx>
> Cc: linux-pci@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx;
> bhelgaas@xxxxxxxxxx; lorenzo.pieralisi@xxxxxxx; Roy Zang
> <roy.zang@xxxxxxx>; M.h. Lian <minghuan.lian@xxxxxxx>
> 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@xxxxxxx>
> >
> > 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@xxxxxxx>
> > ---
> >  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