Message-ID: <5341B999.3050206@infradead.org>
Date: Sun, 06 Apr 2014 13:31:21 -0700
From: Randy Dunlap <rdunlap@infradead.org>
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To: Larry Finger <Larry.Finger@lwfinger.net>,
        LKML <linux-kernel@vger.kernel.org>
Subject: Re: Kconfig circular dependency question
References: <5341AFC7.1070001@lwfinger.net>
In-Reply-To: <5341AFC7.1070001@lwfinger.net>
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On 04/06/2014 12:49 PM, Larry Finger wrote:
> A kernel build is reporting the following:
> 
> net/rfkill/Kconfig:4:error: recursive dependency detected!
> net/rfkill/Kconfig:4:   symbol RFKILL is selected by R8723AU
> drivers/staging/rtl8723au/Kconfig:1:    symbol R8723AU depends on USB
> drivers/usb/Kconfig:41: symbol USB is selected by MOUSE_APPLETOUCH
> drivers/input/mouse/Kconfig:162:        symbol MOUSE_APPLETOUCH depends on INPUT
> drivers/input/Kconfig:8:        symbol INPUT is selected by ACPI_CMPC
> drivers/platform/x86/Kconfig:635:       symbol ACPI_CMPC depends on RFKILL
> 
> What is the recommended way to avoid this circularity? Of course, R8723AU could select USB rather than depending on it, but that does not seem quite right.

I don't know if it will fix the problem, but Linus has spoken (written)
against selecting subsystems, like INPUT or USB.

Does changing ACPI_CMPC to depend on INPUT instead of select INPUT
help?
and/or changing MOUSE_APPLETOUCH to depend on USB instead of select it?


-- 
~Randy
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