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authorStefan Richter <stefanr@s5r6.in-berlin.de>2008-12-10 00:20:38 +0100
committerStefan Richter <stefanr@s5r6.in-berlin.de>2008-12-10 12:45:34 +0100
commit1d1dc5e83f3299c108a4e44d58cc4bfef48c876a (patch)
tree4acec6d605d2c04294afa8d5a7699430c34e8449 /drivers/firewire/fw-transaction.h
parentec9a13cdbfc8cf29502096ca69b65f07184a9b2c (diff)
firewire: fw-ohci: fix IOMMU resource exhaustion
There is a DMA map/ unmap imbalance whenever a block write request packet is sent and then dequeued with ohci_cancel_packet. The latter may happen frequently if the AR resp tasklet is executed before the AT req tasklet for the same transaction. Add the missing dma_unmap_single. This fixes https://bugzilla.redhat.com/show_bug.cgi?id=475156 Reported-by: Emmanuel Kowalski Tested-by: Emmanuel Kowalski Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Diffstat (limited to 'drivers/firewire/fw-transaction.h')
-rw-r--r--drivers/firewire/fw-transaction.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/firewire/fw-transaction.h b/drivers/firewire/fw-transaction.h
index aed7dbb17cda..839466f0a795 100644
--- a/drivers/firewire/fw-transaction.h
+++ b/drivers/firewire/fw-transaction.h
@@ -27,6 +27,7 @@
#include <linux/list.h>
#include <linux/spinlock_types.h>
#include <linux/timer.h>
+#include <linux/types.h>
#include <linux/workqueue.h>
#define TCODE_IS_READ_REQUEST(tcode) (((tcode) & ~1) == 4)
@@ -153,6 +154,7 @@ struct fw_packet {
size_t header_length;
void *payload;
size_t payload_length;
+ dma_addr_t payload_bus;
u32 timestamp;
/*

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