1 files changed, 10 insertions, 1 deletions

diff --git a/drivers/firewire/ohci.c b/drivers/firewire/ohci.c
index 7f03540cabe8..1b05896648bc 100644
--- a/drivers/firewire/ohci.c
+++ b/drivers/firewire/ohci.c
@@ -263,6 +263,7 @@ static const struct {
         {PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB38X_FW, QUIRK_NO_MSI},
         {PCI_VENDOR_ID_NEC,     PCI_ANY_ID,     QUIRK_CYCLE_TIMER},
         {PCI_VENDOR_ID_VIA,     PCI_ANY_ID,     QUIRK_CYCLE_TIMER},
+        {PCI_VENDOR_ID_RICOH,   PCI_ANY_ID,     QUIRK_CYCLE_TIMER},
         {PCI_VENDOR_ID_APPLE,   PCI_DEVICE_ID_APPLE_UNI_N_FW, QUIRK_BE_HEADERS},
 };
 
@@ -694,7 +695,15 @@ static __le32 *handle_ar_packet(struct ar_context *ctx, __le32 *buffer)
         log_ar_at_event('R', p.speed, p.header, evt);
 
         /*
-         * The OHCI bus reset handler synthesizes a phy packet with
+         * Several controllers, notably from NEC and VIA, forget to
+         * write ack_complete status at PHY packet reception.
+         */
+        if (evt == OHCI1394_evt_no_status &&
+            (p.header[0] & 0xff) == (OHCI1394_phy_tcode << 4))
+                p.ack = ACK_COMPLETE;
+
+        /*
+         * The OHCI bus reset handler synthesizes a PHY packet with
          * the new generation number when a bus reset happens (see
          * section 8.4.2.3).  This helps us determine when a request
          * was received and make sure we send the response in the same