[RESEND PATCH 2/3] New PCI quirk for SolidRun SNET DPU.

Alvaro Karsz
Mon, 19 Dec 2022 08:35:10 -0000

The DPU advertises FLR, but it may cause the device to hang.
This only happens with revision 0x1.

Signed-off-by: Alvaro Karsz <alvaro.karsz at solid-run.com>
---
 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