diff options
| author | Brian King <brking@linux.vnet.ibm.com> | 2010-09-21 10:17:11 -0500 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@suse.de> | 2010-10-07 17:17:06 -0500 |
| commit | d24099df9e379b150c164da354b8c6fdafc73257 (patch) | |
| tree | 8477826140d799ae23b0fe14b993512923c7934b /drivers/scsi/ibmvscsi | |
| parent | 1a03ae0f556a931aa3747b70e44b78308f5b0590 (diff) | |
| download | lwn-d24099df9e379b150c164da354b8c6fdafc73257.tar.gz lwn-d24099df9e379b150c164da354b8c6fdafc73257.zip | |
[SCSI] ibmvfc: Handle Virtual I/O Server reboot
If a Virtual I/O server is rebooted, the client fibre channel sees a
transport event on its CRQ, which causes it to attempt to reconnect
to the CRQ. For a period of time during the VIOS reboot, the client's
attempts to register the CRQ will return H_CLOSED, indicating the server
side is not currently registered. The ibmvfc driver was not handling
this well and was taking the virtual adapter offline. Fix this by
re-enabling our interrupt and waiting for the event on our CRQ
indicating the server is back, at which point we can reconnect.
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/ibmvfc.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c index f033bf39690f..00d08b25425f 100644 --- a/drivers/scsi/ibmvscsi/ibmvfc.c +++ b/drivers/scsi/ibmvscsi/ibmvfc.c @@ -4302,8 +4302,10 @@ static void ibmvfc_do_work(struct ibmvfc_host *vhost) spin_unlock_irqrestore(vhost->host->host_lock, flags); rc = ibmvfc_reset_crq(vhost); spin_lock_irqsave(vhost->host->host_lock, flags); - if (rc || (rc = ibmvfc_send_crq_init(vhost)) || - (rc = vio_enable_interrupts(to_vio_dev(vhost->dev)))) { + if (rc == H_CLOSED) + vio_enable_interrupts(to_vio_dev(vhost->dev)); + else if (rc || (rc = ibmvfc_send_crq_init(vhost)) || + (rc = vio_enable_interrupts(to_vio_dev(vhost->dev)))) { ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); dev_err(vhost->dev, "Error after reset (rc=%d)\n", rc); } |