From: Bart Van Assche <bvanassche@acm.org>
Date: Thu, 8 Aug 2019 20:02:11 -0700
Subject: scsi: qla2xxx: Complain if sp->done() is not called from the
 completion path
Patch-mainline: v5.4-rc1
Git-commit: 88263208dd23327b56fbd7c2858c389c1153b366
References: bsc#1123034 bsc#1131304 bsc#1127988 bsc#1143706

Not calling sp->done() from the command completion path is a severe bug.
Hence complain loudly if that happens.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Daniel Wagner <dwagner@suse.de>
---
 drivers/scsi/qla2xxx/qla_init.c |    4 ++++
 drivers/scsi/qla2xxx/qla_isr.c  |    4 ++++
 drivers/scsi/qla2xxx/qla_mr.c   |    4 ++++
 3 files changed, 12 insertions(+)

--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -243,6 +243,10 @@ qla2x00_async_iocb_timeout(void *data)
 			sp->done(sp, QLA_FUNCTION_TIMEOUT);
 		}
 		break;
+	default:
+		WARN_ON_ONCE(true);
+		sp->done(sp, QLA_FUNCTION_TIMEOUT);
+		break;
 	}
 }
 
--- a/drivers/scsi/qla2xxx/qla_isr.c
+++ b/drivers/scsi/qla2xxx/qla_isr.c
@@ -2786,6 +2786,8 @@ out:
 
 	if (rsp->status_srb == NULL)
 		sp->done(sp, res);
+	else
+		WARN_ON_ONCE(true);
 }
 
 /**
@@ -2843,6 +2845,8 @@ qla2x00_status_cont_entry(struct rsp_que
 	if (sense_len == 0) {
 		rsp->status_srb = NULL;
 		sp->done(sp, cp->result);
+	} else {
+		WARN_ON_ONCE(true);
 	}
 }
 
--- a/drivers/scsi/qla2xxx/qla_mr.c
+++ b/drivers/scsi/qla2xxx/qla_mr.c
@@ -2539,6 +2539,8 @@ check_scsi_status:
 
 	if (rsp->status_srb == NULL)
 		sp->done(sp, res);
+	else
+		WARN_ON_ONCE(true);
 }
 
 /**
@@ -2616,6 +2618,8 @@ qlafx00_status_cont_entry(struct rsp_que
 	if (sense_len == 0) {
 		rsp->status_srb = NULL;
 		sp->done(sp, cp->result);
+	} else {
+		WARN_ON_ONCE(true);
 	}
 }