From 12347414227879cb9d1b31d3ad0efd78329bc983 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Timo=20Ter=C3=A4s?= <timo.teras@iki.fi>
Date: Fri, 17 Dec 2010 11:40:24 +0200
Subject: [PATCH] staging: hv: fix netvsc sleeping while atomic
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commit d70c673153d42e8aefd5ac296c8159ef222d076b upstream.

The channel callbacks are called directly from vmbus_event_dpc
which runs in tasklet context. These callbacks need to use
GFP_ATOMIC.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=16701

Cc: Hank Janssen <hjanssen@microsoft.com>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Timo Teräs <timo.teras@iki.fi>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/staging/hv/netvsc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/hv/netvsc.c b/drivers/staging/hv/netvsc.c
index 1d2ebbe17e2c..95dee473d81d 100644
--- a/drivers/staging/hv/netvsc.c
+++ b/drivers/staging/hv/netvsc.c
@@ -1250,7 +1250,7 @@ static void NetVscOnChannelCallback(void *Context)
 	/* ASSERT(device); */
 
 	packet = kzalloc(NETVSC_PACKET_SIZE * sizeof(unsigned char),
-			 GFP_KERNEL);
+			 GFP_ATOMIC);
 	if (!packet)
 		return;
 	buffer = packet;
-- 
2.39.5