Hi Alvaro,
Thanks for the patch!
On Mon, Dec 19, 2022 at 10:35:10AM +0200, Alvaro Karsz wrote:
> The DPU advertises FLR, but it may cause the device to hang.
> This only happens with revision 0x1.
Please update the subject line to:
PCI: Avoid FLR for SolidRun SNET DPU rev 1
This makes the subject meaningful by itself and is similar to previous
quirks:
5727043c73fd ("PCI: Avoid FLR for AMD Starship USB 3.0")
0d14f06cd665 ("PCI: Avoid FLR for AMD Matisse HD Audio & USB 3.0")
f65fd1aa4f98 ("PCI: Avoid FLR for Intel 82579 NICs")
Also, update the commit log so it says what this patch does, instead
of simply describing the current situation.
https://chris.beams.io/posts/git-commit/ is a good reference.
With the above changes,
Acked-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
> Signed-off-by: Alvaro Karsz <alvaro.karsz@xxxxxxxxxxxxx>
> ---
> drivers/pci/quirks.c | 8 ++++++++
> 1 file changed, 8 insertions(+)
>
> diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
> index 285acc4aacc..809d03272c2 100644
> --- a/drivers/pci/quirks.c
> +++ b/drivers/pci/quirks.c
> @@ -5343,6 +5343,14 @@ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AMD, 0x149c, quirk_no_flr);
> DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x1502, quirk_no_flr);
> DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x1503, quirk_no_flr);
>
> +/* FLR may cause the SolidRun SNET DPU (rev 0x1) to hang */
> +static void quirk_no_flr_snet(struct pci_dev *dev)
> +{
> + if (dev->revision == 0x1)
> + quirk_no_flr(dev);
> +}
> +DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SOLIDRUN, 0x1000, quirk_no_flr_snet);
> +
> static void quirk_no_ext_tags(struct pci_dev *pdev)
> {
> struct pci_host_bridge *bridge = pci_find_host_bridge(pdev->bus);
> --
> 2.32.0
>
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