From: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Date: Sun, 9 Mar 2008 04:44:36 +0000 (+0900)
Subject: [SCSI] 3w-xxxx: use sg buffer copy helper functions
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=e943752ecf0ce41cdf949d565140d91c7711dfd9;p=GitHub%2Fmt8127%2Fandroid_kernel_alcatel_ttab.git

[SCSI] 3w-xxxx: use sg buffer copy helper functions

This rewrites tw_transfer_internal with scsi_sg_copy_from/to_buffer.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Adam Radford <linuxraid@amcc.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
---

diff --git a/drivers/scsi/3w-xxxx.c b/drivers/scsi/3w-xxxx.c
index d09532162217..a2fc06022e10 100644
--- a/drivers/scsi/3w-xxxx.c
+++ b/drivers/scsi/3w-xxxx.c
@@ -1463,18 +1463,10 @@ static void tw_transfer_internal(TW_Device_Extension *tw_dev, int request_id,
 				 void *data, unsigned int len)
 {
 	struct scsi_cmnd *cmd = tw_dev->srb[request_id];
-	void *buf;
-	unsigned int transfer_len;
-	unsigned long flags = 0;
-	struct scatterlist *sg = scsi_sglist(cmd);
+	unsigned long flags;
 
 	local_irq_save(flags);
-	buf = kmap_atomic(sg_page(sg), KM_IRQ0) + sg->offset;
-	transfer_len = min(sg->length, len);
-
-	memcpy(buf, data, transfer_len);
-
-	kunmap_atomic(buf - sg->offset, KM_IRQ0);
+	scsi_sg_copy_from_buffer(cmd, data, len);
 	local_irq_restore(flags);
 }