]> pilppa.com Git - linux-2.6-omap-h63xx.git/commit
firewire: fw-ohci: fix IOMMU resource exhaustion
authorStefan Richter <stefanr@s5r6.in-berlin.de>
Tue, 9 Dec 2008 23:20:38 +0000 (00:20 +0100)
committerStefan Richter <stefanr@s5r6.in-berlin.de>
Wed, 10 Dec 2008 11:45:34 +0000 (12:45 +0100)
commit1d1dc5e83f3299c108a4e44d58cc4bfef48c876a
tree4acec6d605d2c04294afa8d5a7699430c34e8449
parentec9a13cdbfc8cf29502096ca69b65f07184a9b2c
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>
drivers/firewire/fw-ohci.c
drivers/firewire/fw-transaction.c
drivers/firewire/fw-transaction.h