linux-kernel - Re: 2.6.23-rc6-mm1 sparc build error

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Message-ID: <Pine.LNX.4.60.0709201418000.5039@poirot.grange>
Date:	Thu, 20 Sep 2007 14:53:26 +0200 (CEST)
From:	Guennadi Liakhovetski <g.liakhovetski@....de>
To:	Andrew Morton <akpm@...ux-foundation.org>
cc:	Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>,
	linux-kernel@...r.kernel.org, wli@...omorphy.com,
	sparclinux@...r.kernel.org, Dmitry Torokhov <dtor@...l.ru>
Subject: Re: 2.6.23-rc6-mm1 sparc build error

Provide {enable,disable}_irq_wakeup dummies for undefined 
CONFIG_GENERIC_HARDIRQS case. Completely untested, as I don't even have 
cross-compilers for platforms without CONFIG_GENERIC_HARDIRQS.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@....de>

---

On Tue, 18 Sep 2007, Andrew Morton wrote:

> On Tue, 18 Sep 2007 16:54:03 -0400
> Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca> wrote:
> 
> > I got the following error when building 2.6.23-rc6-mm1 on sparc:
> > 
> > 
> >   /opt/crosstool/gcc-4.1.1-glibc-2.3.6/sparc-unknown-linux-gnu/bin/sparc-unknown-linux-gnu-gcc -Wp,-MD,drivers/serial/.serial_core.o.d  -nostdinc -isystem /opt/crosstool/gcc-4.1.1-glibc-2.3.6/sparc-unknown-linux-gnu/lib/gcc/sparc-unknown-linux-gnu/4.1.1/include -D__KERNEL__ -Iinclude -Iinclude2 -I/home/compudj/git/linux-2.6-lttng/include -include include/linux/autoconf.h  -I/home/compudj/git/linux-2.6-lttng/drivers/serial -Idrivers/serial -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -Werror-implicit-function-declaration -Os -m32 -pipe -mno-fpu -fcall-used-g5 -fcall-used-g7 -fomit-frame-pointer -fno-stack-protector -Wdeclaration-after-statement -Wno-pointer-sign  -D"KBUILD_STR(s)=#s" -D"KBUILD_BASENAME=KBUILD_STR(serial_core)"  -D"KBUILD_MODNAME=KBUILD_STR(serial_core)" -c -o drivers/serial/.tmp_serial_core.o /home/compudj/git/linux-2.6-lttng/drivers/serial/serial_core.c
> > /home/compudj/git/linux-2.6-lttng/drivers/serial/serial_core.c: In function 'uart_suspend_port':
> > /home/compudj/git/linux-2.6-lttng/drivers/serial/serial_core.c:1980: error: implicit declaration of function 'enable_irq_wake'
> > /home/compudj/git/linux-2.6-lttng/drivers/serial/serial_core.c: In function 'uart_resume_port':
> > /home/compudj/git/linux-2.6-lttng/drivers/serial/serial_core.c:2035: error: implicit declaration of function 'disable_irq_wake'
> 
> hm, I wonder why I didn't hit that.
> 
> enable_irq_wake() was added by wake-up-from-a-serial-port.patch
> 
> I note that git-input adds a call too, and might have a problem
> with !CONFIG_GENERIC_HARDIRQS.
> 
> Not sure what the best fix is here.  We could sprinkle ifdefs all
> over the code, or just add the suitable empty stubs for enable_irq_wake(),
> etc.

diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h
index 5323f62..ecade41 100644
--- a/include/linux/interrupt.h
+++ b/include/linux/interrupt.h
@@ -205,6 +205,9 @@ static inline int disable_irq_wake(unsigned int irq)
 						enable_irq(irq)
 # endif
 
+#define enable_irq_wake(irq) ({ (void)(irq); 0; })
+#define disable_irq_wake(irq) ({ (void)(irq); 0; })
+
 #endif /* CONFIG_GENERIC_HARDIRQS */
 
 #ifndef __ARCH_SET_SOFTIRQ_PENDING
-
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