2.5.37 oopses at boot in ide_toggle_bounce

2.5.37 oopses at boot in ide_toggle_bounce().
With

--- linux-2.5.37/linux/drivers/ide/ide-lib.c    Sat Sep 21 11:39:48 2002
+++ linux-2.5.37a/linux/drivers/ide/ide-lib.c   Sat Sep 21 14:06:45 2002
@@ -394,7 +394,7 @@
        if (on && drive->media == ide_disk) {
                if (!PCI_DMA_BUS_IS_PHYS)
                        addr = BLK_BOUNCE_ANY;
-               else
+               else if (HWIF(drive)->pci_dev)
                        addr = HWIF(drive)->pci_dev->dma_mask;
        }

it boots for me. I have not investigated a proper fix.

Andries