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@xxxxxxxxxxxxxxxxxx>
---
drivers/scsi/ibmvscsi/ibmvfc.c | 15 +++++++++++++--
1 file changed, 13 insertions(+), 2 deletions(-)
diff -puN drivers/scsi/ibmvscsi/ibmvfc.c~ibmvfc_abort_during_reset drivers/scsi/ibmvscsi/ibmvfc.c
--- linux/drivers/scsi/ibmvscsi/ibmvfc.c~ibmvfc_abort_during_reset 2013-05-15 10:02:13.000000000 -0500
+++ linux-bjking1/drivers/scsi/ibmvscsi/ibmvfc.c 2013-05-15 10:02:13.000000000 -0500
@@ -2208,7 +2208,10 @@ static int ibmvfc_cancel_all(struct scsi
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
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");
_
--
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