RE: [PATCH 2/3][v2] ACPI: Using correct irq when waiting for events

[Chen, Yu C]

This should not be a valid warning IMO, 
because PATCH 2/3 is  based on PATCH 1/3,
and the warning of implicit declaration is defined 
in PATCH 1/3.


> -----Original Message-----
> From: lkp
> Sent: Sunday, October 25, 2015 1:19 AM
> To: Chen, Yu C
> Cc: kbuild-all@xxxxxx; rjw@xxxxxxxxxxxxx; lenb@xxxxxxxxxx; Zhang, Rui;
> Zheng, Lv; linux-acpi@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; linux-
> pm@xxxxxxxxxxxxxxx; Chen, Yu C; stable@xxxxxxxxxxxxxxx
> Subject: Re: [PATCH 2/3][v2] ACPI: Using correct irq when waiting for events
> 
> Hi Chen,
> 
> [auto build test ERROR on pm/linux-next -- if it's inappropriate base, please
> suggest rules for selecting the more suitable base]
> 
> url:    https://github.com/0day-ci/linux/commits/Chen-Yu/ACPI-Using-
> correct-irq-when-waiting-for-events/20151025-010210
> config: x86_64-randconfig-x015-201543 (attached as .config)
> reproduce:
>         # save the attached .config to linux build tree
>         make ARCH=x86_64
> 
> All error/warnings (new ones prefixed by >>):
> 
>    In file included from include/uapi/linux/stddef.h:1:0,
>                     from include/linux/stddef.h:4,
>                     from include/uapi/linux/posix_types.h:4,
>                     from include/uapi/linux/types.h:13,
>                     from include/linux/types.h:5,
>                     from include/linux/list.h:4,
>                     from include/linux/module.h:9,
>                     from drivers/acpi/osl.c:26:
>    drivers/acpi/osl.c: In function 'acpi_os_wait_events_complete':
> >> drivers/acpi/osl.c:1183:6: error: implicit declaration of function
> 'acpi_sci_irq_valid' [-Werror=implicit-function-declaration]
>      if (acpi_sci_irq_valid())
>          ^
>    include/linux/compiler.h:147:28: note: in definition of macro '__trace_if'
>      if (__builtin_constant_p((cond)) ? !!(cond) :   \
>                                ^
> >> drivers/acpi/osl.c:1183:2: note: in expansion of macro 'if'
>      if (acpi_sci_irq_valid())
>      ^
> >> drivers/acpi/osl.c:1184:23: error: 'acpi_sci_irq' undeclared (first use in this
> function)
>       synchronize_hardirq(acpi_sci_irq);
>                           ^
>    drivers/acpi/osl.c:1184:23: note: each undeclared identifier is reported only
> once for each function it appears in
>    cc1: some warnings being treated as errors
> 
> vim +/acpi_sci_irq_valid +1183 drivers/acpi/osl.c
> 
>   1177	void acpi_os_wait_events_complete(void)
>   1178	{
>   1179		/*
>   1180		 * Make sure the GPE handler or the fixed event handler is
> not used
>   1181		 * on another CPU after removal.
>   1182		 */
> > 1183		if (acpi_sci_irq_valid())
> > 1184			synchronize_hardirq(acpi_sci_irq);
>   1185		flush_workqueue(kacpid_wq);
>   1186		flush_workqueue(kacpi_notify_wq);
>   1187	}
> 
> ---
> 0-DAY kernel test infrastructure                Open Source Technology Center
> https://lists.01.org/pipermail/kbuild-all                   Intel Corporation
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