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-rw-r--r--drivers/firewire/ohci.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/firewire/ohci.c b/drivers/firewire/ohci.c
index 3486bc49c177..76b321bb73f9 100644
--- a/drivers/firewire/ohci.c
+++ b/drivers/firewire/ohci.c
@@ -2431,6 +2431,11 @@ static int __devinit pci_probe(struct pci_dev *dev,
dev->device == PCI_DEVICE_ID_AGERE_FW643)
ohci->use_dualbuffer = false;
+ /* dual-buffer mode is broken */
+ if (dev->vendor == PCI_VENDOR_ID_RICOH &&
+ dev->device == PCI_DEVICE_ID_RICOH_R5C832)
+ ohci->use_dualbuffer = false;
+
/* x86-32 currently doesn't use highmem for dma_alloc_coherent */
#if !defined(CONFIG_X86_32)
/* dual-buffer mode is broken with descriptor addresses above 2G */