[PATCH] ieee1394: sbp2: avoid DMA bounce buffers for ORBs

[Stefan Richter <stefanr@xxxxxxxxxxxxxxxxx>]

The command ORB pool is used frequently during the whole lifetime of an
SBP-2 logical unit.  It doesn't make sense to let it live outside the
32bit DMA zone.

Signed-off-by: Stefan Richter <stefanr@xxxxxxxxxxxxxxxxx>
---
 drivers/ieee1394/sbp2.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: linux-2.6.27-rc2/drivers/ieee1394/sbp2.c
===================================================================
--- linux-2.6.27-rc2.orig/drivers/ieee1394/sbp2.c
+++ linux-2.6.27-rc2/drivers/ieee1394/sbp2.c
@@ -531,7 +531,7 @@ static int sbp2util_create_command_orb_p
 	int i, orbs = sbp2_serialize_io ? 2 : SBP2_MAX_CMDS;
 
 	for (i = 0; i < orbs; i++) {
-		cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+		cmd = kzalloc(sizeof(*cmd), GFP_KERNEL | GFP_DMA32);
 		if (!cmd)
 			return -ENOMEM;
 		cmd->command_orb_dma = dma_map_single(hi->host->device.parent,

-- 
Stefan Richter
-=====-==--- =--- -=---
http://arcgraph.de/sr/

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