diff options
| author | Tejun Heo <htejun@gmail.com> | 2006-11-22 12:39:43 +0900 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2006-11-28 03:45:13 -0500 |
| commit | c31f571d9f42fa2e89148811730fe3dc64943a6e (patch) | |
| tree | 0b2be4fe17824d8dc89e9c838e9f8ff934472504 | |
| parent | 2ea5814472c3c910aed5c5b60f1f3b1000e353f1 (diff) | |
| download | linux-c31f571d9f42fa2e89148811730fe3dc64943a6e.tar.gz linux-c31f571d9f42fa2e89148811730fe3dc64943a6e.tar.bz2 linux-c31f571d9f42fa2e89148811730fe3dc64943a6e.zip | |
[PATCH] libata: don't schedule EH on wcache on/off if old EH
Do not schedule EH for revalidation on wcache on/off if old EH. Old
EH cannot handle it and will result in WARN_ON()'s and oops.
This closes bug #7412.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
| -rw-r--r-- | drivers/ata/libata-scsi.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c index 5c1fc467fc7f..22643c0d9a56 100644 --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c @@ -1451,6 +1451,7 @@ nothing_to_do: static void ata_scsi_qc_complete(struct ata_queued_cmd *qc) { + struct ata_port *ap = qc->ap; struct scsi_cmnd *cmd = qc->scsicmd; u8 *cdb = cmd->cmnd; int need_sense = (qc->err_mask != 0); @@ -1459,11 +1460,12 @@ static void ata_scsi_qc_complete(struct ata_queued_cmd *qc) * schedule EH_REVALIDATE operation to update the IDENTIFY DEVICE * cache */ - if (!need_sense && (qc->tf.command == ATA_CMD_SET_FEATURES) && + if (ap->ops->error_handler && + !need_sense && (qc->tf.command == ATA_CMD_SET_FEATURES) && ((qc->tf.feature == SETFEATURES_WC_ON) || (qc->tf.feature == SETFEATURES_WC_OFF))) { - qc->ap->eh_info.action |= ATA_EH_REVALIDATE; - ata_port_schedule_eh(qc->ap); + ap->eh_info.action |= ATA_EH_REVALIDATE; + ata_port_schedule_eh(ap); } /* For ATA pass thru (SAT) commands, generate a sense block if @@ -1490,8 +1492,8 @@ static void ata_scsi_qc_complete(struct ata_queued_cmd *qc) } } - if (need_sense && !qc->ap->ops->error_handler) - ata_dump_status(qc->ap->id, &qc->result_tf); + if (need_sense && !ap->ops->error_handler) + ata_dump_status(ap->id, &qc->result_tf); qc->scsidone(cmd); |