linux-kernel - Re: [PATCH v2] PCI: qcom: Fix the fixup of PCI_VENDOR_ID

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Message-ID: <20200226110549.GA16284@e121166-lin.cambridge.arm.com>
Date:   Wed, 26 Feb 2020 11:05:49 +0000
From:   Lorenzo Pieralisi <lorenzo.pieralisi@....com>
To:     Stanimir Varbanov <svarbanov@...sol.com>
Cc:     Bjorn Andersson <bjorn.andersson@...aro.org>,
        Andrew Murray <andrew.murray@....com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        linux-arm-msm@...r.kernel.org, linux-pci@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Marc Gonzalez <marc.w.gonzalez@...e.fr>, stable@...r.kernel.org
Subject: Re: [PATCH v2] PCI: qcom: Fix the fixup of PCI_VENDOR_ID_QCOM

On Wed, Feb 26, 2020 at 12:56:23PM +0200, Stanimir Varbanov wrote:
> Hi Lorenzo,
> 
> On 2/26/20 12:22 PM, Lorenzo Pieralisi wrote:
> > On Thu, Dec 26, 2019 at 05:27:17PM -0800, Bjorn Andersson wrote:
> >> There exists non-bridge PCIe devices with PCI_VENDOR_ID_QCOM, so limit
> >> the fixup to only affect the relevant PCIe bridges.
> >>
> >> Cc: stable@...r.kernel.org
> > 
> > Hi Bjorn,
> > 
> > to simplify stable's merging, would you mind helping me with
> > the stable releases you want this patch to apply to please ?
> > 
> 
> We've to have this in the patch:
> 
> Cc: stable@...r.kernel.org # v5.2+
> Fixes: 322f03436692 ("PCI: qcom: Use default config space read function")

Done, applied to pci/qcom for v5.7.

Thanks,
Lorenzo

> > I will apply it then.
> > 
> > Thanks,
> > Lorenzo
> > 
> >> Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>
> >> ---
> >>
> >> Stan, I picked up all the suggested device id's from the previous thread and
> >> added 0x1000 for QCS404. I looked at creating platform specific defines in
> >> pci_ids.h, but SDM845 has both 106 and 107... Please let me know if you would
> >> prefer that I do this anyway.
> >>
> >>  drivers/pci/controller/dwc/pcie-qcom.c | 8 +++++++-
> >>  1 file changed, 7 insertions(+), 1 deletion(-)
> >>
> >> diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c
> >> index 5ea527a6bd9f..138e1a2d21cc 100644
> >> --- a/drivers/pci/controller/dwc/pcie-qcom.c
> >> +++ b/drivers/pci/controller/dwc/pcie-qcom.c
> >> @@ -1439,7 +1439,13 @@ static void qcom_fixup_class(struct pci_dev *dev)
> >>  {
> >>  	dev->class = PCI_CLASS_BRIDGE_PCI << 8;
> >>  }
> >> -DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_QCOM, PCI_ANY_ID, qcom_fixup_class);
> >> +DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_QCOM, 0x0101, qcom_fixup_class);
> >> +DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_QCOM, 0x0104, qcom_fixup_class);
> >> +DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_QCOM, 0x0106, qcom_fixup_class);
> >> +DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_QCOM, 0x0107, qcom_fixup_class);
> >> +DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_QCOM, 0x0302, qcom_fixup_class);
> >> +DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_QCOM, 0x1000, qcom_fixup_class);
> >> +DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_QCOM, 0x1001, qcom_fixup_class);
> >>  
> >>  static struct platform_driver qcom_pcie_driver = {
> >>  	.probe = qcom_pcie_probe,
> >> -- 
> >> 2.24.0
> >>
> 
> -- 
> regards,
> Stan