linux-kernel - [PATCH] Intel SCU Watchdog: Fix build failure and duplicate include

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Date:	Thu, 26 May 2011 11:12:53 +0200 (CEST)
From:	Jesper Juhl <jj@...osbits.net>
To:	linux-kernel@...r.kernel.org
cc:	linux-watchdog@...r.kernel.org,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>, x86@...nel.org,
	Wim Van Sebroeck <wim@...ana.be>,
	Robert Richter <robert.richter@....com>,
	Donald Johnson <donald.k.johnson@...el.com>
Subject: [PATCH] Intel SCU Watchdog: Fix build failure and duplicate
 include

Trying to build the Intel SCU Watchdog fails for me with gcc 4.6.0 -
$ gcc --version | head -n 1
gcc (GCC) 4.6.0 20110513 (prerelease)

like this :
  CC      drivers/watchdog/intel_scu_watchdog.o
In file included from drivers/watchdog/intel_scu_watchdog.c:49:0:
/home/jj/src/linux-2.6/arch/x86/include/asm/apb_timer.h: In function ‘apbt_time_init’:
/home/jj/src/linux-2.6/arch/x86/include/asm/apb_timer.h:65:42: warning: ‘return’ with a value, in function returning void [enabled by default]
drivers/watchdog/intel_scu_watchdog.c: In function ‘intel_scu_watchdog_init’:
drivers/watchdog/intel_scu_watchdog.c:468:2: error: implicit declaration of function ‘sfi_get_mtmr’ [-Werror=implicit-function-declaration]
drivers/watchdog/intel_scu_watchdog.c:468:32: warning: assignment makes pointer from integer without a cast [enabled by default]
cc1: some warnings being treated as errors

make[1]: *** [drivers/watchdog/intel_scu_watchdog.o] Error 1
make: *** [drivers/watchdog/intel_scu_watchdog.o] Error 2

Additionally, linux/types.h is needlessly being included twice in 
drivers/watchdog/intel_scu_watchdog.c

This patch fixes it all and I can now build the code.

Signed-off-by: Jesper Juhl <jj@...osbits.net>
---
 arch/x86/include/asm/apb_timer.h      |    2 +-
 drivers/watchdog/intel_scu_watchdog.c |    1 -
 drivers/watchdog/intel_scu_watchdog.h |    2 +-
 3 files changed, 2 insertions(+), 3 deletions(-)

 Patch has been compile tested only.

diff --git a/arch/x86/include/asm/apb_timer.h b/arch/x86/include/asm/apb_timer.h
index 2fefa50..af60d8a 100644
--- a/arch/x86/include/asm/apb_timer.h
+++ b/arch/x86/include/asm/apb_timer.h
@@ -62,7 +62,7 @@ extern int sfi_mtimer_num;
 #else /* CONFIG_APB_TIMER */
 
 static inline unsigned long apbt_quick_calibrate(void) {return 0; }
-static inline void apbt_time_init(void) {return 0; }
+static inline void apbt_time_init(void) { }
 
 #endif
 #endif /* ASM_X86_APBT_H */
diff --git a/drivers/watchdog/intel_scu_watchdog.c b/drivers/watchdog/intel_scu_watchdog.c
index 919bdd1..ba43860 100644
--- a/drivers/watchdog/intel_scu_watchdog.c
+++ b/drivers/watchdog/intel_scu_watchdog.c
@@ -42,7 +42,6 @@
 #include <linux/sched.h>
 #include <linux/signal.h>
 #include <linux/sfi.h>
-#include <linux/types.h>
 #include <asm/irq.h>
 #include <asm/atomic.h>
 #include <asm/intel_scu_ipc.h>
diff --git a/drivers/watchdog/intel_scu_watchdog.h b/drivers/watchdog/intel_scu_watchdog.h
index d2b074a..a9ca0d7 100644
--- a/drivers/watchdog/intel_scu_watchdog.h
+++ b/drivers/watchdog/intel_scu_watchdog.h
@@ -62,5 +62,5 @@ struct intel_scu_watchdog_dev {
 
 extern int sfi_mtimer_num;
 
-/* extern struct sfi_timer_table_entry *sfi_get_mtmr(int hint); */
+extern struct sfi_timer_table_entry *sfi_get_mtmr(int hint);
 #endif /* __INTEL_SCU_WATCHDOG_H */


-- 
Jesper Juhl <jj@...osbits.net>       http://www.chaosbits.net/
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