5.1-stable patches

[thirdparty/kernel/stable-queue.git] / releases / 3.1.1 / staging-hv-fix-a-kernel-warning-in-netvsc_linkstatus_callback.patch

From c4b6a2eaf1c14810a4803d658f68614365978738 Mon Sep 17 00:00:00 2001
From: Haiyang Zhang <haiyangz@microsoft.com>
Date: Thu, 1 Sep 2011 12:19:42 -0700
Subject: staging: hv: fix a kernel warning in netvsc_linkstatus_callback()

From: Haiyang Zhang <haiyangz@microsoft.com>

commit c4b6a2eaf1c14810a4803d658f68614365978738 upstream.

netif_notify_peers() caused a kernel warning in netvsc_linkstatus_callback(),
because netvsc_linkstatus_callback() is within IRQ context. So we move
the first call to netif_notify_peers() into queued work as well, but with
zero delay.

In addition to "staging-next", this should also be back-ported to stable
kernels 2.6.32 and later.

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

---
 drivers/staging/hv/netvsc_drv.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/staging/hv/netvsc_drv.c
+++ b/drivers/staging/hv/netvsc_drv.c
@@ -217,8 +217,8 @@ void netvsc_linkstatus_callback(struct h
 	if (status == 1) {
 		netif_carrier_on(net);
 		netif_wake_queue(net);
-		netif_notify_peers(net);
 		ndev_ctx = netdev_priv(net);
+		schedule_delayed_work(&ndev_ctx->dwork, 0);
 		schedule_delayed_work(&ndev_ctx->dwork, msecs_to_jiffies(20));
 	} else {
 		netif_carrier_off(net);