linux-kernel - Re: [PATCH 1/1] PCI: qcom: Add early fixup to set the max payload size for IPQ9574

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: <20230724130855.GO6291@thinkpad>
Date:   Mon, 24 Jul 2023 18:38:55 +0530
From:   Manivannan Sadhasivam <mani@...nel.org>
To:     Konrad Dybcio <konrad.dybcio@...aro.org>
Cc:     Praveenkumar I <quic_ipkumar@...cinc.com>, agross@...nel.org,
        andersson@...nel.org, lpieralisi@...nel.org, kw@...ux.com,
        robh@...nel.org, bhelgaas@...gle.com, linux-pci@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        quic_varada@...cinc.com, quic_devipriy@...cinc.com
Subject: Re: [PATCH 1/1] PCI: qcom: Add early fixup to set the max payload
 size for IPQ9574

On Mon, Jul 24, 2023 at 02:53:37PM +0200, Konrad Dybcio wrote:
> On 24.07.2023 14:47, Praveenkumar I wrote:
> > Set 256 bytes as payload size for IPQ9574 via early fixup. This allows
> > PCIe RC to use the max payload size when a capable link partner is
> > connected.
> > 
> > Signed-off-by: Praveenkumar I <quic_ipkumar@...cinc.com>
> > ---
> [...]
> 
> > 
> > +static void qcom_fixup_mps_256(struct pci_dev *dev)
> > +{
> > +	pcie_set_mps(dev, 256);
> Looks like setting "dev->pcie_mpss = 1" here would make the PCIe generic
> code take care of this.
> 

Right, also this setting should not be PCI-PCI bridge specific but rather
controller specific.

- Mani

> Konrad

-- 
மணிவண்ணன் சதாசிவம்