From: Haiyang Zhang <haiyangz@microsoft.com>
Date: Fri, 5 Apr 2013 11:44:39 +0000 (+0000)
Subject: hyperv: Fix a kernel warning from netvsc_linkstatus_callback()
X-Git-Tag: v3.9-rc7~26^2~14
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fd5c07a8d6a10c7112b19f3b0d428627c62b06ab;p=pandora-kernel.git

hyperv: Fix a kernel warning from netvsc_linkstatus_callback()

The warning about local_bh_enable inside IRQ happens when disconnecting a
virtual NIC.

The reason for the warning is -- netif_tx_disable() is called when the NIC
is disconnected. And it's called within irq context. netif_tx_disable() calls
local_bh_enable() which displays warning if in irq.

The fix is to remove the unnecessary netif_tx_disable & wake_queue() in the
netvsc_linkstatus_callback().

Reported-by: Richard Genoud <richard.genoud@gmail.com>
Tested-by: Long Li <longli@microsoft.com>
Tested-by: Richard Genoud <richard.genoud@gmail.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Reviewed-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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