From a4cf30e15ccea82a07fa5870e8af787b9ea1a672 Mon Sep 17 00:00:00 2001
From: Vitaly Kuznetsov <vkuznets@redhat.com>
Date: Fri, 30 Oct 2015 12:37:49 +0100
Subject: [PATCH] scsi_scan: don't dump trace when scsi_prep_async_scan() is
called twice
The only user of scsi_prep_async_scan() is scsi_scan_host() and it
handles the situation correctly. Move 'called twice' reporting to debug
level as well.
The issue is observed on Hyper-V: on any device add/remove event storvsc
driver calls scsi_scan_host() and in case previous scan is still running
we get the message and stack dump on console.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: K. Y. Srinivasan <kys@microsoft.com>
Tested-by: Alex Ng <alexng@microsoft.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
---
drivers/scsi/scsi_scan.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c
index 3b3dfef4d8392e..d01e423ef44b85 100644
--- a/drivers/scsi/scsi_scan.c
+++ b/drivers/scsi/scsi_scan.c
@@ -1713,8 +1713,7 @@ static struct async_scan_data *scsi_prep_async_scan(struct Scsi_Host *shost)
return NULL;
if (shost->async_scan) {
- shost_printk(KERN_INFO, shost, "%s called twice\n", __func__);
- dump_stack();
+ shost_printk(KERN_DEBUG, shost, "%s called twice\n", __func__);
return NULL;
}
--
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