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Commit e943752e authored by FUJITA Tomonori's avatar FUJITA Tomonori Committed by James Bottomley
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[SCSI] 3w-xxxx: use sg buffer copy helper functions 



This rewrites tw_transfer_internal with scsi_sg_copy_from/to_buffer.

Signed-off-by: default avatarFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Adam Radford <linuxraid@amcc.com>
Signed-off-by: default avatarJames Bottomley <James.Bottomley@HansenPartnership.com>
parent 31fe47d4

drivers/scsi/3w-xxxx.c

+2 −10
Original line number Diff line number Diff line
@@ -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);

}