netdev - [PATCH 1/3 v2] net: fail alloc_netdev

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Date:	Mon, 18 Oct 2010 20:55:58 -0700 (PDT)
From:	Tom Herbert <therbert@...gle.com>
To:	davem@...emloft.net, netdev@...r.kernel.org
cc:	bhutchings@...arflare.com, eric.dumazet@...il.com
Subject: [PATCH 1/3 v2] net: fail alloc_netdev_mq if queue count < 1

In alloc_netdev_mq fail if requested queue_count < 1.

Signed-off-by: Tom Herbert <therbert@...gle.com>
---
 net/core/dev.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/net/core/dev.c b/net/core/dev.c
index 04972a4..f44d29a 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -5511,6 +5511,12 @@ struct net_device *alloc_netdev_mq(int sizeof_priv, const char *name,
 
 	BUG_ON(strlen(name) >= sizeof(dev->name));
 
+	if (queue_count < 1) {
+		pr_err("alloc_netdev: Unable to allocate device "
+		       "with zero queues.\n");
+		return NULL;
+	}
+
 	alloc_size = sizeof(struct net_device);
 	if (sizeof_priv) {
 		/* ensure 32-byte alignment of private area */
-- 
1.7.1

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