linux-kernel - Re: [mmotm and linux-next][PATCH] irq: enclose irq_desc_lock_class in CONFIG

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Message-ID: <2f11576a0812160315g3dea988ayfadba2117e172a2c@mail.gmail.com>
Date:	Tue, 16 Dec 2008 20:15:58 +0900
From:	"KOSAKI Motohiro" <kosaki.motohiro@...fujitsu.com>
To:	"Ingo Molnar" <mingo@...e.hu>
Cc:	"Andrew Morton" <akpm@...ux-foundation.org>,
	"Yinghai Lu" <yhlu.kernel@...il.com>,
	LKML <linux-kernel@...r.kernel.org>,
	linux-next <linux-next@...r.kernel.org>
Subject: Re: [mmotm and linux-next][PATCH] irq: enclose irq_desc_lock_class in CONFIG_LOCKDEP

Hi!

>> > No, lockdep.h (which we forgot to include) already handles that:
>> >
>> > # define lockdep_set_class(lock, key)               do { (void)(key); } while (0)
>> >
>> > the problem is that the code which references irq_desc_lock_class is
>> > inside #ifdef CONFIG_SPARSE_IRQ, so this is a better fix:
>>
>> agreed that this is the better fix - applied to tip/irq/sparseirq,
>> thanks!
>
> actually, this breaks the build on !SPARSEIRQ because we will use that
> class in the non-sparseirq case. So we've converted a build warning to a
> build failure ;-)

Please give me your .config and tell me your arch.
my ia64 box (ia64 is !SPARSEIRQ) can build the akpm patch.
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