Subject: Re: linux-next: build failure after merge of the sh tree

From: Rich Felker <[email-masked]>
Date: Sun, 24 Jul 2016 23:57:30 -0400

On Sun, Jul 24, 2016 at 05:55:01PM +1000, Stephen Rothwell wrote:
> Hi Rich,
> 
> After merging the sh tree, today's linux-next build (powerpc allyesconfig)
> failed like this:
> 
> drivers/clocksource/jcore-pit.c:145:20: error: conflicting types for 'timer_interrupt'
>  static irqreturn_t timer_interrupt(int irq, void *dev_id)
>                     ^
> In file included from arch/powerpc/include/asm/irqflags.h:11:0,
>                  from include/linux/irqflags.h:15,
>                  from include/linux/spinlock.h:53,
>                  from include/linux/mmzone.h:7,
>                  from include/linux/gfp.h:5,
>                  from include/linux/slab.h:14,
>                  from drivers/clocksource/jcore-pit.c:12:
> arch/powerpc/include/asm/hw_irq.h:36:13: note: previous declaration of 'timer_interrupt' was here
>  extern void timer_interrupt(struct pt_regs *);
>              ^
> 
> Caused by commit
> 
>   e0aa0655c60b ("clocksource: add J-Core timer/clocksource driver")
> 
> I added this fix patch:
> 
> From: Stephen Rothwell <[email-masked]>
> Date: Sun, 24 Jul 2016 17:42:19 +1000
> Subject: [PATCH] clocksource: make J-Core timer_interrupt more unique
> 
> Signed-off-by: Stephen Rothwell <[email-masked]>
> ---
>  drivers/clocksource/jcore-pit.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/clocksource/jcore-pit.c b/drivers/clocksource/jcore-pit.c
> index b9d693bcb41e..373b9f954a5c 100644
> --- a/drivers/clocksource/jcore-pit.c
> +++ b/drivers/clocksource/jcore-pit.c
> @@ -142,7 +142,7 @@ static int jcore_pit_cpu_notify(struct notifier_block *self,
>  	return NOTIFY_OK;
>  }
>  
> -static irqreturn_t timer_interrupt(int irq, void *dev_id)
> +static irqreturn_t jcore_timer_interrupt(int irq, void *dev_id)
>  {
>  	struct jcore_pit *pit = this_cpu_ptr(dev_id);
>  
> @@ -224,7 +224,7 @@ static void __init jcore_pit_init(struct device_node *node)
>  		goto out;
>  	}
>  
> -	err = request_irq(pit_irq, timer_interrupt,
> +	err = request_irq(pit_irq, jcore_timer_interrupt,
>  		IRQF_TIMER | IRQF_PERCPU, "jcore_pit", pit_percpu);
>  	if (err) {
>  		pr_err("pit irq request failed: %d\n", err);
> -- 

If it's acceptable I'll rebase this change into sh for-next and the
patch I send to the subsystem maintainer.

Rich