From 3ccefdfd4f8e84cf164a61898a599a8f29755887 Mon Sep 17 00:00:00 2001
From: Tyrel Datwyler <tyreld@linux.ibm.com>
Date: Thu, 11 Feb 2021 12:57:42 -0600
Subject: [PATCH 4/4] ibmvfc: store return code of H_FREE_SUB_CRQ during
cleanup
References: bsc#1182632 ltc#191222
Patch-mainline: submitted https://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=229197
The H_FREE_SUB_CRQ hypercall can return a retry delay return code that
indicates the call needs to be retried after a specific amount of time
delay. The error path to free a sub-CRQ in case of a failure during
channel registration fails to capture the return code of H_FREE_SUB_CRQ
which will result in the delay loop being skipped in the case of a retry
delay return code.
Store the return code result of the H_FREE_SUB_CRQ call such that the
return code check in the delay loop evaluates a meaningful value.
Fixes: 9288d35d70b5 ("ibmvfc: map/request irq and register Sub-CRQ interrupt handler")
Signed-off-by: Tyrel Datwyler <tyreld@linux.ibm.com>
Acked-by: Michal Suchanek <msuchanek@suse.de>
---
drivers/scsi/ibmvscsi/ibmvfc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c
index 2e6f3524c6c6..b9a5a61f1cc1 100644
--- a/drivers/scsi/ibmvscsi/ibmvfc.c
+++ b/drivers/scsi/ibmvscsi/ibmvfc.c
@@ -5672,7 +5672,7 @@ static int ibmvfc_register_scsi_channel(struct ibmvfc_host *vhost,
irq_failed:
do {
- plpar_hcall_norets(H_FREE_SUB_CRQ, vdev->unit_address, scrq->cookie);
+ rc = plpar_hcall_norets(H_FREE_SUB_CRQ, vdev->unit_address, scrq->cookie);
} while (rc == H_BUSY || H_IS_LONG_BUSY(rc));
reg_failed:
ibmvfc_free_queue(vhost, scrq);
--
2.26.2