linux-kernel - Re: [PATCH] sparseirq: make some func to be used with genirq

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Date:	Sun, 11 Jan 2009 16:07:11 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Yinghai Lu <yinghai@...nel.org>
Cc:	Matt Mackall <mpm@...enic.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] sparseirq: make some func to be used with genirq


* Ingo Molnar <mingo@...e.hu> wrote:

> 
> > > +++ b/include/linux/random.h
> > > @@ -10,6 +10,10 @@
> > >  #include <linux/ioctl.h>
> > >  #include <linux/irqnr.h>
> > >  
> > > +#ifdef CONFIG_GENERIC_HARDIRQS
> > > +#include <linux/irq.h>
> > > +#endif
> 
> fails CONFIG_HEADERS_CHECK=y:
> 
> /home/mingo/linux/linux/usr/include/linux/random.h:14:
>  included file 'linux/irq.h' is not exported

replaced it with the patch below instead. Hopefully that's enough.

	Ingo

--------------------->
>From d178a1eb5c034df1f74a2b67bf311afa5d6b8e95 Mon Sep 17 00:00:00 2001
From: Yinghai Lu <yinghai@...nel.org>
Date: Sun, 11 Jan 2009 00:35:42 -0800
Subject: [PATCH] sparseirq: fix build with unknown irq_desc struct

Ingo Molnar wrote:
>
> tip/kernel/fork.c: In function 'copy_signal':
> tip/kernel/fork.c:825: warning: unused variable 'ret'
> tip/drivers/char/random.c: In function 'get_timer_rand_state':
> tip/drivers/char/random.c:584: error: dereferencing pointer to incomplete type
> tip/drivers/char/random.c: In function 'set_timer_rand_state':
> tip/drivers/char/random.c:594: error: dereferencing pointer to incomplete type
> make[3]: *** [drivers/char/random.o] Error 1

irq_desc is defined in linux/irq.h, so include it in the genirq case.

Signed-off-by: Yinghai Lu <yinghai@...nel.org>
Signed-off-by: Ingo Molnar <mingo@...e.hu>
---
 drivers/char/random.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/drivers/char/random.c b/drivers/char/random.c
index a778918..7c43ae7 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -241,6 +241,10 @@
 #include <linux/percpu.h>
 #include <linux/cryptohash.h>
 
+#ifdef CONFIG_GENERIC_HARDIRQS
+# include <linux/irq.h>
+#endif
+
 #include <asm/processor.h>
 #include <asm/uaccess.h>
 #include <asm/irq.h>
--
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