[042/272] staging: hv: fix netvsc sleeping while atomic

Greg KH
2011-02-16T00:19:17Z

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2.6.37-stable review patch. If anyone has any objections, please let us know.

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From: =?UTF-8?q?Timo=20Ter=C3=A4s?= <timo.teras@iki.fi>

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(-)

--- a/drivers/staging/hv/netvsc.c
+++ b/drivers/staging/hv/netvsc.c
@@ -1236,7 +1236,7 @@ static void NetVscOnChannelCallback(void
/* ASSERT(device); */

packet = kzalloc(NETVSC_PACKET_SIZE * sizeof(unsigned char),
- GFP_KERNEL);
+ GFP_ATOMIC);
if (!packet)
return;
buffer = packet;