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[V4,8/9] pm80xx : panic on ncq error cleaning up the read log.

Message ID 20171018060915.8549-9-Viswas.G@microsemi.com (mailing list archive)
State Accepted
Headers show

Commit Message

Viswas G Oct. 18, 2017, 6:09 a.m. UTC 
when there's an error in 'ncq mode' the host has to read the ncq
error log (10h) to clear the error state. however, the ccb that
is setup for doing this doesn't setup the ccb so that the
previous state is cleared. if the ccb was previously used for an IO
n_elems is set and pm8001_ccb_task_free() treats this as the signal
to go free a scatter-gather list (that's already been free-ed).

Signed-off-by: Deepak Ukey <deepak.ukey@microsemi.com>
Signed-off-by: Viswas G <Viswas.G@microsemi.com>

Acked-by: Jack Wang <jinpu.wang@profitbricks.com>
---
 drivers/scsi/pm8001/pm80xx_hwi.c | 1 +
 1 file changed, 1 insertion(+)
diff mbox

Patch

diff --git a/drivers/scsi/pm8001/pm80xx_hwi.c b/drivers/scsi/pm8001/pm80xx_hwi.c
index f6df11a7c2d5..42f0405601ad 100644
--- a/drivers/scsi/pm8001/pm80xx_hwi.c
+++ b/drivers/scsi/pm8001/pm80xx_hwi.c
@@ -1489,6 +1489,7 @@  static void pm80xx_send_read_log(struct pm8001_hba_info *pm8001_ha,
 	ccb->device = pm8001_ha_dev;
 	ccb->ccb_tag = ccb_tag;
 	ccb->task = task;
+	ccb->n_elem = 0;
 	pm8001_ha_dev->id |= NCQ_READ_LOG_FLAG;
 	pm8001_ha_dev->id |= NCQ_2ND_RLE_FLAG;