From: Salyzyn, Mark <Mark_Salyzyn@adaptec.com>
Date: Fri, 11 Jan 2008 19:46:44 +0000 (-0800)
Subject: [SCSI] aacraid: add call to flush_kernel_dcache_page
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=3a0086a80ab7c2f1adb0e9b2a6fc82632979cec5;p=openwrt%2Fstaging%2Fblogic.git

[SCSI] aacraid: add call to flush_kernel_dcache_page

Some architectures require a call to flush_kernel_dcache_page for
processor spoofed DMA operations.

Signed-off-by: Mark Salyzyn <aacraid@adaptec.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
---

diff --git a/drivers/scsi/aacraid/aachba.c b/drivers/scsi/aacraid/aachba.c
index 3cddcc0901b2..970a8d99107a 100644
--- a/drivers/scsi/aacraid/aachba.c
+++ b/drivers/scsi/aacraid/aachba.c
@@ -31,9 +31,9 @@
 #include <linux/slab.h>
 #include <linux/completion.h>
 #include <linux/blkdev.h>
-#include <linux/dma-mapping.h>
 #include <asm/semaphore.h>
 #include <asm/uaccess.h>
+#include <linux/highmem.h> /* For flush_kernel_dcache_page */
 
 #include <scsi/scsi.h>
 #include <scsi/scsi_cmnd.h>
@@ -366,6 +366,7 @@ static void aac_internal_transfer(struct scsi_cmnd *scsicmd, void *data, unsigne
 	if (buf && transfer_len > 0)
 		memcpy(buf + offset, data, transfer_len);
 
+	flush_kernel_dcache_page(kmap_atomic_to_page(buf - sg->offset));
 	kunmap_atomic(buf - sg->offset, KM_IRQ0);
 
 }