From: K. Y. Srinivasan <kys@microsoft.com>
Date: Sat, 27 Aug 2011 18:31:06 +0000 (-0700)
Subject: Staging: hv: storvsc: Prevent outgoing traffic when stor dev is being destroyed
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=582f445fde4886959deacf93b6dea6817f41ba88;p=deliverable%2Flinux.git

Staging: hv: storvsc: Prevent outgoing traffic when stor dev is being destroyed

Prevent outgoing traffic when stor dev is destroyed.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/drivers/staging/hv/hyperv_storage.h b/drivers/staging/hv/hyperv_storage.h
index d93bf93eb243..1a59ca090fca 100644
--- a/drivers/staging/hv/hyperv_storage.h
+++ b/drivers/staging/hv/hyperv_storage.h
@@ -294,7 +294,8 @@ static inline struct storvsc_device *get_out_stor_device(
 	struct storvsc_device *stor_device;
 
 	stor_device = (struct storvsc_device *)device->ext;
-	if (stor_device && atomic_read(&stor_device->ref_count) > 1)
+	if (stor_device && (atomic_read(&stor_device->ref_count) > 1) &&
+		!stor_device->destroy)
 		atomic_inc(&stor_device->ref_count);
 	else
 		stor_device = NULL;