[SCSI] 3w-xxxx: use sg buffer copy helper functions
authorFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Sun, 9 Mar 2008 04:44:36 +0000 (13:44 +0900)
committerJames Bottomley <James.Bottomley@HansenPartnership.com>
Mon, 7 Apr 2008 17:15:46 +0000 (12:15 -0500)
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>
drivers/scsi/3w-xxxx.c

index d09532162217b5f04376845546bbced6ada5b05a..a2fc06022e108f5b71c12ac4a3ab66e314eb3fb7 100644 (file)
@@ -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);
 }