---

yaml
---
r: 89639
b: refs/heads/master
c: d34316a
h: refs/heads/master
i:
  89637: 977a3b1
  89635: e7658d5
  89631: e5201c0
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 08ddb2f4c270b5dff063f7dbcd7e9248a52e7c65
+refs/heads/master: d34316a4bdcd4fef050da584401c7f4ed22482f2

trunk/drivers/firewire/fw-ohci.c

@@ -181,6 +181,7 @@ struct fw_ohci {
 	int request_generation;
 	u32 bus_seconds;
 	bool old_uninorth;
+	bool bus_reset_packet_quirk;
 
 	/*
 	 * Spinlock for accessing fw_ohci data.  Never call out of
@@ -571,14 +572,19 @@ static __le32 *handle_ar_packet(struct ar_context *ctx, __le32 *buffer)
 	 * generation.  We only need this for requests; for responses
 	 * we use the unique tlabel for finding the matching
 	 * request.
+	 *
+	 * Alas some chips sometimes emit bus reset packets with a
+	 * wrong generation.  We set the correct generation for these
+	 * at a slightly incorrect time (in bus_reset_tasklet).
 	 */
-
-	if (evt == OHCI1394_evt_bus_reset)
-		ohci->request_generation = (p.header[2] >> 16) & 0xff;
-	else if (ctx == &ohci->ar_request_ctx)
+	if (evt == OHCI1394_evt_bus_reset) {
+		if (!ohci->bus_reset_packet_quirk)
+			ohci->request_generation = (p.header[2] >> 16) & 0xff;
+	} else if (ctx == &ohci->ar_request_ctx) {
 		fw_core_handle_request(&ohci->card, &p);
-	else
+	} else {
 		fw_core_handle_response(&ohci->card, &p);
+	}
 
 	return buffer + length + 1;
 }
@@ -1285,6 +1291,9 @@ static void bus_reset_tasklet(unsigned long data)
 	context_stop(&ohci->at_response_ctx);
 	reg_write(ohci, OHCI1394_IntEventClear, OHCI1394_busReset);
 
+	if (ohci->bus_reset_packet_quirk)
+		ohci->request_generation = generation;
+
 	/*
 	 * This next bit is unrelated to the AT context stuff but we
 	 * have to do it under the spinlock also.  If a new config rom
@@ -2360,6 +2369,8 @@ pci_probe(struct pci_dev *dev, const struct pci_device_id *ent)
 	ohci->old_uninorth = dev->vendor == PCI_VENDOR_ID_APPLE &&
 			     dev->device == PCI_DEVICE_ID_APPLE_UNI_N_FW;
 #endif
+	ohci->bus_reset_packet_quirk = dev->vendor == PCI_VENDOR_ID_TI;
+
 	spin_lock_init(&ohci->lock);
 
 	tasklet_init(&ohci->bus_reset_tasklet,