From mboxrd@z Thu Jan  1 00:00:00 1970
From: Christoph Hellwig <hch@infradead.org>
Subject: Re: [PATCH V6 10/33] csky: IRQ handling
Date: Thu, 27 Sep 2018 08:49:18 -0700
Message-ID: <20180927154918.GB15985@infradead.org>
References: <cover.1538058840.git.ren_guo@c-sky.com>
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To: Guo Ren <ren_guo@c-sky.com>
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> --- /dev/null
> +++ b/arch/csky/include/asm/irq.h
> @@ -0,0 +1,9 @@
> +// SPDX-License-Identifier: GPL-2.0
> +// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
> +
> +#ifndef __ASM_CSKY_IRQ_H
> +#define __ASM_CSKY_IRQ_H
> +
> +#include <asm-generic/irq.h>
> +
> +#endif /* __ASM_CSKY_IRQ_H */

Just wire this up using generic-y in the Kbuild file instead of
creating a wrapper.  (Same for any other header which is a trivial
asm-generic wrapper).