[PATCH net,1/2] hyperv: Fix a kernel warning from netvsc_linkstatus_callback()

David Miller davem at davemloft.net
Mon Apr 8 16:16:14 UTC 2013


From: Haiyang Zhang <haiyangz at microsoft.com>
Date: Fri,  5 Apr 2013 14:44:39 -0700

> 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 at gmail.com>
> Tested-by: Long Li <longli at microsoft.com>
> Tested-by: Richard Genoud <richard.genoud at gmail.com>
> Signed-off-by: Haiyang Zhang <haiyangz at microsoft.com>
> Reviewed-by: K. Y. Srinivasan <kys at microsoft.com>

Applied.



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