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authorDavid S. Miller <davem@davemloft.net>2007-04-20 01:31:17 +0200
committerAdrian Bunk <bunk@stusta.de>2007-04-20 01:31:17 +0200
commitad65d701caf0937add48e1c54263850a6a382d27 (patch)
tree4270124dfc22a85f7ef8943723d8086334989306 /drivers
parenteed22cdc141e11eacd8cd544bdc41432ceb506d1 (diff)
[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> Signed-off-by: Adrian Bunk <bunk@stusta.de>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/scsi/qlogicpti.c2
1 files changed, 1 insertions, 1 deletions
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,