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From: Arend van Spriel <arend.vanspriel@broadcom.com>
To: YueHaibing <yuehaibing@huawei.com>, j@w1.fi, kvalo@codeaurora.org
Cc: linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
	linux-wireless@vger.kernel.org, davem@davemloft.net,
	Randy Dunlap <rdunlap@infradead.org>
Subject: Re: [PATCH] hostap: hide unused procfs helpers
Date: Fri, 13 Jul 2018 09:26:57 +0200	[thread overview]
Message-ID: <5B485441.1080305@broadcom.com> (raw)
In-Reply-To: <20180713070317.6724-1-yuehaibing@huawei.com>

+ Randy

On 7/13/2018 9:03 AM, YueHaibing wrote:
> When CONFIG_PROC_FS isn't set, gcc warning this:
>
> drivers/net/wireless/intersil/hostap/hostap_hw.c:2901:12: warning: ‘prism2_registers_proc_show’ defined but not used [-Wunused-function]
>   static int prism2_registers_proc_show(struct seq_file *m, void *v)
>
> drivers/net/wireless/intersil/hostap/hostap_proc.c:16:12: warning: ‘prism2_debug_proc_show’ defined but not used [-Wunused-function]
>   static int prism2_debug_proc_show(struct seq_file *m, void *v)
>              ^
> drivers/net/wireless/intersil/hostap/hostap_proc.c:49:12: warning: ‘prism2_stats_proc_show’ defined but not used [-Wunused-function]
>   static int prism2_stats_proc_show(struct seq_file *m, void *v)
>              ^
> drivers/net/wireless/intersil/hostap/hostap_proc.c:177:12: warning: ‘prism2_crypt_proc_show’ defined but not used [-Wunused-function]
>   static int prism2_crypt_proc_show(struct seq_file *m, void *v)
>              ^
>
> fix this by adding #ifdef around them.
> hfa384x_read_reg is only used by prism2_registers_proc_show,so move it
> into #ifdef.

There was already a fix for this posted by Randy Dunlap taking a 
different approach, ie. use __maybe_unused classifier. To be honest I 
prefer the ifdef approach as it is more explicit and does not feel like 
a cheat.

Actually some of the functions are between a flag already 
PRISM2_NO_PROCFS_DEBUG which is in a private header file 
hostap_config.h. Seems like this would be better placed in Kconfig and 
depend on CONFIG_PROCFS. Anyway, this driver is old cruft. Maybe some 
people are still running it, but it is probably not worth the effort so 
fine with either fix.

Regards,
Arend

WARNING: multiple messages have this Message-ID
From: Arend van Spriel <arend.vanspriel-dY08KVG/lbpWk0Htik3J/w@public.gmane.org>
To: YueHaibing <yuehaibing-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>,
	j@w1.fi, kvalo-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org
Cc: linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-wireless-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org,
	Randy Dunlap <rdunlap-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
Subject: Re: [PATCH] hostap: hide unused procfs helpers
Date: Fri, 13 Jul 2018 09:26:57 +0200	[thread overview]
Message-ID: <5B485441.1080305@broadcom.com> (raw)
In-Reply-To: <20180713070317.6724-1-yuehaibing-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>

+ Randy

On 7/13/2018 9:03 AM, YueHaibing wrote:
> When CONFIG_PROC_FS isn't set, gcc warning this:
>
> drivers/net/wireless/intersil/hostap/hostap_hw.c:2901:12: warning: ‘prism2_registers_proc_show’ defined but not used [-Wunused-function]
>   static int prism2_registers_proc_show(struct seq_file *m, void *v)
>
> drivers/net/wireless/intersil/hostap/hostap_proc.c:16:12: warning: ‘prism2_debug_proc_show’ defined but not used [-Wunused-function]
>   static int prism2_debug_proc_show(struct seq_file *m, void *v)
>              ^
> drivers/net/wireless/intersil/hostap/hostap_proc.c:49:12: warning: ‘prism2_stats_proc_show’ defined but not used [-Wunused-function]
>   static int prism2_stats_proc_show(struct seq_file *m, void *v)
>              ^
> drivers/net/wireless/intersil/hostap/hostap_proc.c:177:12: warning: ‘prism2_crypt_proc_show’ defined but not used [-Wunused-function]
>   static int prism2_crypt_proc_show(struct seq_file *m, void *v)
>              ^
>
> fix this by adding #ifdef around them.
> hfa384x_read_reg is only used by prism2_registers_proc_show,so move it
> into #ifdef.

There was already a fix for this posted by Randy Dunlap taking a 
different approach, ie. use __maybe_unused classifier. To be honest I 
prefer the ifdef approach as it is more explicit and does not feel like 
a cheat.

Actually some of the functions are between a flag already 
PRISM2_NO_PROCFS_DEBUG which is in a private header file 
hostap_config.h. Seems like this would be better placed in Kconfig and 
depend on CONFIG_PROCFS. Anyway, this driver is old cruft. Maybe some 
people are still running it, but it is probably not worth the effort so 
fine with either fix.

Regards,
Arend

  reply	other threads:[~2018-07-13  7:40 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-07-13  7:03 YueHaibing
2018-07-13  7:26 ` Arend van Spriel [this message]
2018-07-13  7:26   ` Arend van Spriel
2018-07-13  9:37   ` YueHaibing
2018-07-13 16:43   ` Randy Dunlap
2018-07-27  9:25   ` Kalle Valo
2018-07-27  9:25     ` Kalle Valo
2018-07-27 10:03     ` YueHaibing
2018-07-27 15:46       ` Randy Dunlap
2018-07-31  7:21 ` Kalle Valo

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