From 6fdc03709433ccc2005f0f593ae9d9dd04f7b485 Mon Sep 17 00:00:00 2001
From: Stefan Richter <stefanr@s5r6.in-berlin.de>
Date: Sat, 20 Jun 2009 13:23:59 +0200
Subject: 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>
---
include/linux/firewire.h | 1 +
1 file changed, 1 insertion(+)
(limited to 'include/linux/firewire.h')
diff --git a/include/linux/firewire.h b/include/linux/firewire.h
index 9823946adbc..192d1e43c43 100644
--- a/include/linux/firewire.h
+++ b/include/linux/firewire.h
@@ -127,6 +127,7 @@ struct fw_card {
struct delayed_work work;
int bm_retries;
int bm_generation;
+ __be32 bm_transaction_data[2];
bool broadcast_channel_allocated;
u32 broadcast_channel;
--
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