summaryrefslogtreecommitdiffstats
path: root/drivers/scsi/megaraid
diff options
context:
space:
mode:
authorSumit.Saxena@avagotech.com <Sumit.Saxena@avagotech.com>2014-11-17 15:24:08 +0530
committerChristoph Hellwig <hch@lst.de>2014-11-24 14:39:01 +0100
commitaa00832b4ca6491c3540ef637ee89a7394711858 (patch)
tree89ad6b57ca4dd325e48d771a99e11448d70630de /drivers/scsi/megaraid
parent6e755ddc2935d970574263db3eca547eb70e67d7 (diff)
downloadlinux-aa00832b4ca6491c3540ef637ee89a7394711858.tar.gz
linux-aa00832b4ca6491c3540ef637ee89a7394711858.tar.bz2
linux-aa00832b4ca6491c3540ef637ee89a7394711858.zip
megaraid_sas: do not process IOCTLs and SCSI commands during driver removal
Do not process any SCSI and IOCTL command further (return them with appropriate return values to callers), while driver removal is in progress or PCI shutdown is invoked. Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com> Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/scsi/megaraid')
-rw-r--r--drivers/scsi/megaraid/megaraid_sas_base.c19
1 files changed, 15 insertions, 4 deletions
diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c
index de67cf310462..3ccfbec682d0 100644
--- a/drivers/scsi/megaraid/megaraid_sas_base.c
+++ b/drivers/scsi/megaraid/megaraid_sas_base.c
@@ -1571,6 +1571,12 @@ megasas_queue_command(struct Scsi_Host *shost, struct scsi_cmnd *scmd)
instance = (struct megasas_instance *)
scmd->device->host->hostdata;
+ if (instance->unload == 1) {
+ scmd->result = DID_NO_CONNECT << 16;
+ scmd->scsi_done(scmd);
+ return 0;
+ }
+
if (instance->issuepend_done == 0)
return SCSI_MLQUEUE_HOST_BUSY;
@@ -5011,10 +5017,6 @@ static int megasas_io_attach(struct megasas_instance *instance)
return -ENODEV;
}
- /*
- * Trigger SCSI to scan our drives
- */
- scsi_scan_host(host);
return 0;
}
@@ -5344,6 +5346,10 @@ retry_irq_register:
goto fail_io_attach;
instance->unload = 0;
+ /*
+ * Trigger SCSI to scan our drives
+ */
+ scsi_scan_host(host);
/*
* Initiate AEN (Asynchronous Event Notification)
@@ -6107,6 +6113,11 @@ megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
megasas_issue_blocked_cmd(instance, cmd, 0);
cmd->sync_cmd = 0;
+ if (instance->unload == 1) {
+ dev_info(&instance->pdev->dev, "Driver unload is in progress "
+ "don't submit data to application\n");
+ goto out;
+ }
/*
* copy out the kernel buffers to user buffers
*/