tree e42e7304084b1b6420d456fbd2a5622e93327a74
parent 0c53decdd0a9f9c459ccabe0b5f79660bde5375b
author Stefan Richter <stefanr@s5r6.in-berlin.de> 1245497039 +0200
committer Stefan Richter <stefanr@s5r6.in-berlin.de> 1245951756 +0200

firewire: core: do not DMA-map stack addresses

The DMA mapping API cannot map on-stack addresses, as explained in
Documentation/DMA-mapping.txt.  Convert the two cases of on-stack packet
payload buffers in firewire-core (payload of lock requests in the bus
manager work and in iso resource management) to slab-allocated memory.

There are a number on-stack buffers for quadlet write or quadlet read
requests in firewire-core and firewire-sbp2.  These are harmless; they
are copied to/ from card driver internal DMA buffers since quadlet
payloads are inlined with packet headers.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>