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-rw-r--r--drivers/firewire/ohci.c16
1 files changed, 15 insertions, 1 deletions
diff --git a/drivers/firewire/ohci.c b/drivers/firewire/ohci.c
index 5d524254499e..c07cfada190a 100644
--- a/drivers/firewire/ohci.c
+++ b/drivers/firewire/ohci.c
@@ -275,7 +275,7 @@ static void log_irqs(u32 evt)
!(evt & OHCI1394_busReset))
return;
- fw_notify("IRQ %08x%s%s%s%s%s%s%s%s%s%s%s%s%s\n", evt,
+ fw_notify("IRQ %08x%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n", evt,
evt & OHCI1394_selfIDComplete ? " selfID" : "",
evt & OHCI1394_RQPkt ? " AR_req" : "",
evt & OHCI1394_RSPkt ? " AR_resp" : "",
@@ -286,6 +286,7 @@ static void log_irqs(u32 evt)
evt & OHCI1394_postedWriteErr ? " postedWriteErr" : "",
evt & OHCI1394_cycleTooLong ? " cycleTooLong" : "",
evt & OHCI1394_cycle64Seconds ? " cycle64Seconds" : "",
+ evt & OHCI1394_cycleInconsistent ? " cycleInconsistent" : "",
evt & OHCI1394_regAccessFail ? " regAccessFail" : "",
evt & OHCI1394_busReset ? " busReset" : "",
evt & ~(OHCI1394_selfIDComplete | OHCI1394_RQPkt |
@@ -293,6 +294,7 @@ static void log_irqs(u32 evt)
OHCI1394_respTxComplete | OHCI1394_isochRx |
OHCI1394_isochTx | OHCI1394_postedWriteErr |
OHCI1394_cycleTooLong | OHCI1394_cycle64Seconds |
+ OHCI1394_cycleInconsistent |
OHCI1394_regAccessFail | OHCI1394_busReset)
? " ?" : "");
}
@@ -1439,6 +1441,17 @@ static irqreturn_t irq_handler(int irq, void *data)
OHCI1394_LinkControl_cycleMaster);
}
+ if (unlikely(event & OHCI1394_cycleInconsistent)) {
+ /*
+ * We need to clear this event bit in order to make
+ * cycleMatch isochronous I/O work. In theory we should
+ * stop active cycleMatch iso contexts now and restart
+ * them at least two cycles later. (FIXME?)
+ */
+ if (printk_ratelimit())
+ fw_notify("isochronous cycle inconsistent\n");
+ }
+
if (event & OHCI1394_cycle64Seconds) {
cycle_time = reg_read(ohci, OHCI1394_IsochronousCycleTimer);
if ((cycle_time & 0x80000000) == 0)
@@ -1528,6 +1541,7 @@ static int ohci_enable(struct fw_card *card, u32 *config_rom, size_t length)
OHCI1394_reqTxComplete | OHCI1394_respTxComplete |
OHCI1394_isochRx | OHCI1394_isochTx |
OHCI1394_postedWriteErr | OHCI1394_cycleTooLong |
+ OHCI1394_cycleInconsistent |
OHCI1394_cycle64Seconds | OHCI1394_regAccessFail |
OHCI1394_masterIntEnable);
if (param_debug & OHCI_PARAM_DEBUG_BUSRESETS)