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authorBrian King <brking@linux.vnet.ibm.com>2013-08-20 20:08:42 +0400
committerJames Bottomley <JBottomley@Parallels.com>2013-09-06 22:41:34 +0400
commitc281e32aeea4af061264fd18843dc15984482fec (patch)
treef4441cd5055a2d3dd050f38470d146f8a7891125 /drivers/scsi
parent72264eb6dbb9090265f6c87e49db78c4306bc1c3 (diff)
downloadlinux-c281e32aeea4af061264fd18843dc15984482fec.tar.xz
[SCSI] ibmvfc: Fix for offlining devices during error recovery
This fixes an issue seen with devices getting marked offline in a scenario where a VIOS was getting rebooted while a client VFC adapter is in SCSI EH and prevents unnecessary EH escalation in some scenarios. Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Acked-by: Robert Jennings <rcj@linux.vnet.ibm.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi')
-rw-r--r--drivers/scsi/ibmvscsi/ibmvfc.c15
1 files changed, 13 insertions, 2 deletions
diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c
index 4e31caa21ddf..23f5ba5e6472 100644
--- a/drivers/scsi/ibmvscsi/ibmvfc.c
+++ b/drivers/scsi/ibmvscsi/ibmvfc.c
@@ -2208,7 +2208,10 @@ static int ibmvfc_cancel_all(struct scsi_device *sdev, int type)
if (rsp_rc != 0) {
sdev_printk(KERN_ERR, sdev, "Failed to send cancel event. rc=%d\n", rsp_rc);
- return -EIO;
+ /* If failure is received, the host adapter is most likely going
+ through reset, return success so the caller will wait for the command
+ being cancelled to get returned */
+ return 0;
}
sdev_printk(KERN_INFO, sdev, "Cancelling outstanding commands.\n");
@@ -2221,7 +2224,15 @@ static int ibmvfc_cancel_all(struct scsi_device *sdev, int type)
if (status != IBMVFC_MAD_SUCCESS) {
sdev_printk(KERN_WARNING, sdev, "Cancel failed with rc=%x\n", status);
- return -EIO;
+ switch (status) {
+ case IBMVFC_MAD_DRIVER_FAILED:
+ case IBMVFC_MAD_CRQ_ERROR:
+ /* Host adapter most likely going through reset, return success to
+ the caller will wait for the command being cancelled to get returned */
+ return 0;
+ default:
+ return -EIO;
+ };
}
sdev_printk(KERN_INFO, sdev, "Successfully cancelled outstanding commands\n");