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| author | Brian King <brking@linux.vnet.ibm.com> | 2011-04-27 10:27:08 -0500 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@suse.de> | 2011-05-01 12:09:58 -0500 |
| commit | 201aed678482f247aa96bd8fcd9e960fefd82d59 (patch) | |
| tree | 206d28c41b43265a5abaf651b04fa503765b9101 /drivers/scsi/ibmvscsi | |
| parent | 4d4dd7065572225bf6d97e5eb9915d94f9d53548 (diff) | |
| download | linux-stable-201aed678482f247aa96bd8fcd9e960fefd82d59.tar.gz linux-stable-201aed678482f247aa96bd8fcd9e960fefd82d59.tar.bz2 linux-stable-201aed678482f247aa96bd8fcd9e960fefd82d59.zip | |
[SCSI] ibmvscsi: Improve CRQ reset reliability
This patch fixes an issue seen where an event occurs
which causes the ibmvscsi driver to reset its CRQ. Upon
re-registering its CRQ, it receives H_CLOSED, indicating
the Virtual I/O Server is not yet ready to receive commands.
This resulted in the ibmvscsi driver essentially offlining
the adapter and not recovering. The fix is to re-enable
our interrupt so that when the Virtual I/O server is ready
and sends a CRQ init, we will be able to receive it and
resume initialization of the VSCSI adapter.
Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/scsi/ibmvscsi')
| -rw-r--r-- | drivers/scsi/ibmvscsi/ibmvscsi.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/scsi/ibmvscsi/ibmvscsi.c b/drivers/scsi/ibmvscsi/ibmvscsi.c index 041958453e2a..3d391dc3f11f 100644 --- a/drivers/scsi/ibmvscsi/ibmvscsi.c +++ b/drivers/scsi/ibmvscsi/ibmvscsi.c @@ -1849,8 +1849,7 @@ static void ibmvscsi_do_work(struct ibmvscsi_host_data *hostdata) rc = ibmvscsi_ops->reset_crq_queue(&hostdata->queue, hostdata); if (!rc) rc = ibmvscsi_ops->send_crq(hostdata, 0xC001000000000000LL, 0); - if (!rc) - rc = vio_enable_interrupts(to_vio_dev(hostdata->dev)); + vio_enable_interrupts(to_vio_dev(hostdata->dev)); } else if (hostdata->reenable_crq) { smp_rmb(); action = "enable"; |