[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 d095321..a2fc060 100644
--- a/drivers/scsi/3w-xxxx.c
+++ b/drivers/scsi/3w-xxxx.c
@@ -1463,18 +1463,10 @@
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);
}