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Date:	Sat, 25 Aug 2012 14:28:40 +0800
From:	Cong Wang <>
To:	Andrew Morton <>
Cc:, David Miller <>
Subject: Re: [PATCH 14/15] netpoll: re-enable irq in poll_napi()

On Fri, 2012-08-24 at 12:43 -0700, Andrew Morton wrote:
> This commit (6bdb7fe3104 in mainline) makes my netconsole-using x86_64
> box lock up during boot.  Dunno why, but I do have a cellphone:

Thanks for the report!

Sylvain reported a CPU stall problem which is probably caused by this
commit too.

This commit is to fix another issue, that is, we call be_process_mcc()
which calls spin_lock_bh() with IRQ disabled, this leads to a warning

static inline void _local_bh_enable_ip(unsigned long ip)
        WARN_ON_ONCE(in_irq() || irqs_disabled());

I think I should just fix be_process_mcc(), instead of re-enabling IRO
for all ->poll callbacks.

I will send a patch to David soon.

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