diff options
| -rw-r--r-- | drivers/firewire/ohci.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/drivers/firewire/ohci.c b/drivers/firewire/ohci.c index 276324d741df..0031ec6e1f00 100644 --- a/drivers/firewire/ohci.c +++ b/drivers/firewire/ohci.c @@ -1790,8 +1790,12 @@ static irqreturn_t irq_handler(int irq, void *data) if (!event || !~event) return IRQ_NONE; - /* busReset must not be cleared yet, see OHCI 1.1 clause 7.2.3.2 */ - reg_write(ohci, OHCI1394_IntEventClear, event & ~OHCI1394_busReset); + /* + * busReset and postedWriteErr must not be cleared yet + * (OHCI 1.1 clauses 7.2.3.2 and 13.2.8.1) + */ + reg_write(ohci, OHCI1394_IntEventClear, + event & ~(OHCI1394_busReset | OHCI1394_postedWriteErr)); log_irqs(event); if (event & OHCI1394_selfIDComplete) @@ -1831,8 +1835,13 @@ static irqreturn_t irq_handler(int irq, void *data) fw_error("Register access failure - " "please notify linux1394-devel@lists.sf.net\n"); - if (unlikely(event & OHCI1394_postedWriteErr)) + if (unlikely(event & OHCI1394_postedWriteErr)) { + reg_read(ohci, OHCI1394_PostedWriteAddressHi); + reg_read(ohci, OHCI1394_PostedWriteAddressLo); + reg_write(ohci, OHCI1394_IntEventClear, + OHCI1394_postedWriteErr); fw_error("PCI posted write error\n"); + } if (unlikely(event & OHCI1394_cycleTooLong)) { if (printk_ratelimit()) |