parisc: Disable HP HSC-PCI Cards to prevent kernel crash

[linux.git] / drivers / parisc / dino.c

diff --git a/drivers/parisc/dino.c b/drivers/parisc/dino.c
index b04493d0e1fac6e64f44fec639de583f15216985..2f1cac89ddf5ce036126b059b3103b08e21db891 100644 (file)
--- a/drivers/parisc/dino.c
+++ b/drivers/parisc/dino.c
@@ -156,6 +156,15 @@ static inline struct dino_device *DINO_DEV(struct pci_hba_data *hba)
        return container_of(hba, struct dino_device, hba);
 }
 
+/* Check if PCI device is behind a Card-mode Dino. */
+static int pci_dev_is_behind_card_dino(struct pci_dev *dev)
+{
+       struct dino_device *dino_dev;
+
+       dino_dev = DINO_DEV(parisc_walk_tree(dev->bus->bridge));
+       return is_card_dino(&dino_dev->hba.dev->id);
+}
+
 /*
  * Dino Configuration Space Accessor Functions
  */
@@ -437,6 +446,21 @@ static void quirk_cirrus_cardbus(struct pci_dev *dev)
 }
 DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_CIRRUS, PCI_DEVICE_ID_CIRRUS_6832, quirk_cirrus_cardbus );
 
+#ifdef CONFIG_TULIP
+static void pci_fixup_tulip(struct pci_dev *dev)
+{
+       if (!pci_dev_is_behind_card_dino(dev))
+               return;
+       if (!(pci_resource_flags(dev, 1) & IORESOURCE_MEM))
+               return;
+       pr_warn("%s: HP HSC-PCI Cards with card-mode Dino not yet supported.\n",
+               pci_name(dev));
+       /* Disable this card by zeroing the PCI resources */
+       memset(&dev->resource[0], 0, sizeof(dev->resource[0]));
+       memset(&dev->resource[1], 0, sizeof(dev->resource[1]));
+}
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_DEC, PCI_ANY_ID, pci_fixup_tulip);
+#endif /* CONFIG_TULIP */
 
 static void __init
 dino_bios_init(void)