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authorDavid S. Miller <davem@sunset.davemloft.net>2007-04-14 13:29:10 -0400
committerDavid S. Miller <davem@sunset.davemloft.net>2007-04-14 13:29:10 -0400
commit8d3ee2cb0ab59f78fdc801ede7db15ef47387bd0 (patch)
tree004a3b3b5f0d1bc9a32d27bc7f555bae5a04112a /drivers
parentd791d413fd8527aa6b130882cc84d52aee0fe980 (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>
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 9b827ceec501..9f10689905a8 100644
--- a/drivers/scsi/qlogicpti.c
+++ b/drivers/scsi/qlogicpti.c
@@ -1281,7 +1281,7 @@ static struct scsi_cmnd *qlogicpti_intr_handler(struct qlogicpti *qpti)
1281 (struct scatterlist *)Cmnd->request_buffer, 1281 (struct scatterlist *)Cmnd->request_buffer,
1282 Cmnd->use_sg, 1282 Cmnd->use_sg,
1283 Cmnd->sc_data_direction); 1283 Cmnd->sc_data_direction);
1284 } else { 1284 } else if (Cmnd->request_bufflen) {
1285 sbus_unmap_single(qpti->sdev, 1285 sbus_unmap_single(qpti->sdev,
1286 (__u32)((unsigned long)Cmnd->SCp.ptr), 1286 (__u32)((unsigned long)Cmnd->SCp.ptr),
1287 Cmnd->request_bufflen, 1287 Cmnd->request_bufflen,