From ad65d701caf0937add48e1c54263850a6a382d27 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Fri, 20 Apr 2007 01:31:17 +0200 Subject: [SCSI] QLOGICPTI: Do not unmap DMA unless we actually mapped something. We only map DMA when cmd->request_bufflen is non-zero for non-sg buffers, we thus should make the same check when unmapping. Based upon a report from Pasi Pirhonen. Signed-off-by: David S. Miller Signed-off-by: Adrian Bunk --- drivers/scsi/qlogicpti.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/scsi/qlogicpti.c b/drivers/scsi/qlogicpti.c index 1fd5fc6d0fe3..d3854ee537f5 100644 --- a/drivers/scsi/qlogicpti.c +++ b/drivers/scsi/qlogicpti.c @@ -1451,7 +1451,7 @@ static struct scsi_cmnd *qlogicpti_intr_handler(struct qlogicpti *qpti) (struct scatterlist *)Cmnd->buffer, Cmnd->use_sg, Cmnd->sc_data_direction); - } else { + } else if (Cmnd->request_bufflen) { sbus_unmap_single(qpti->sdev, (__u32)((unsigned long)Cmnd->SCp.ptr), Cmnd->request_bufflen, -- cgit v1.2.3