[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 <davem@davemloft.net>
This commit is contained in:
parent
d791d413fd
commit
8d3ee2cb0a
|
@ -1281,7 +1281,7 @@ static struct scsi_cmnd *qlogicpti_intr_handler(struct qlogicpti *qpti)
|
|||
(struct scatterlist *)Cmnd->request_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,
|
||||
|
|
Loading…
Reference in a new issue