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[SCSI] ibmvfc: Fix for offlining devices during error recovery

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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>
This commit is contained in:
Brian King 2013-08-20 11:08:42 -05:00 committed by James Bottomley
parent 72264eb6db
commit c281e32aee
1 changed files with 13 additions and 2 deletions
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15
drivers/scsi/ibmvscsi/ibmvfc.c
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@ -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");