commit f92e2f5f889803306e50c06e17ee330403e91b8d
author Mike Miller <mike.miller@hp.com> Wed Dec 06 20:35:04 2006 -0800
committer Linus Torvalds <torvalds@woody.osdl.org> Thu Dec 07 08:39:29 2006 -0800
tree 0971abf513da37eba31de1aa8d7753aa2e5fa8b7
parent de9239167158c0210c5b9a709d67cea1b6f8ae56

[PATCH] cciss: disable DMA prefetch on P600

Unconditionally disable DMA prefetch on the P600 controller.  An ASIC bug may
result in prefetching beyond the end of physical memory.

Signed-off-by: Mike Miller <mike.miller@hp.com>
Acked-by: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

drivers/block/cciss_cmd.h

diff --git a/drivers/block/cciss_cmd.h b/drivers/block/cciss_cmd.h
index 4af7c4c..b2147cc 100644
--- a/drivers/block/cciss_cmd.h
+++ b/drivers/block/cciss_cmd.h
@@ -55,6 +55,7 @@
 #define I2O_INT_MASK            0x34
 #define I2O_IBPOST_Q            0x40
 #define I2O_OBPOST_Q            0x44
+#define I2O_DMA1_CFG		0x214
 
 //Configuration Table
 #define CFGTBL_ChangeReq        0x00000001l