linux-kernel - Re: randconfig build error with next-20150521, in drivers/platform/x86/dell-rbtn.c

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Date:	Thu, 21 May 2015 22:07:11 +0200
From:	Pali Rohár <pali.rohar@...il.com>
To:	Darren Hart <dvhart@...radead.org>
Cc:	Jim Davis <jim.epost@...il.com>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	"linux-next" <linux-next@...r.kernel.org>,
	"linux-kernel" <linux-kernel@...r.kernel.org>,
	platform-driver-x86@...r.kernel.org
Subject: Re: randconfig build error with next-20150521, in drivers/platform/x86/dell-rbtn.c

On Thursday 21 May 2015 21:56:15 Darren Hart wrote:
> On Thu, May 21, 2015 at 10:36:15AM -0700, Jim Davis wrote:
> > Building with the attached random configuration file,
> > 
> > drivers/built-in.o: In function `rbtn_remove':
> > dell-rbtn.c:(.text+0x31d7f4): undefined reference to
> > `input_unregister_device' drivers/built-in.o: In function
> > `rbtn_notify':
> > dell-rbtn.c:(.text+0x31d8e5): undefined reference to `input_event'
> > dell-rbtn.c:(.text+0x31d8f8): undefined reference to `input_event'
> > dell-rbtn.c:(.text+0x31d911): undefined reference to `input_event'
> > dell-rbtn.c:(.text+0x31d924): undefined reference to `input_event'
> > drivers/built-in.o: In function `rbtn_add':
> > dell-rbtn.c:(.text+0x31da11): undefined reference to
> > `input_allocate_device' dell-rbtn.c:(.text+0x31da4a): undefined
> > reference to `input_register_device' dell-rbtn.c:(.text+0x31da5e):
> > undefined reference to `input_free_device' Makefile:938: recipe
> > for target 'vmlinux' failed
> 
> Thanks Jim,
> 
> Pali, the DELL_RBTN needs to ensure if it it's built-in, that INPUT
> is too. ...
> 
> > CONFIG_INPUT=m
> > CONFIG_INPUT_FF_MEMLESS=m
> > CONFIG_INPUT_POLLDEV=m
> > CONFIG_INPUT_SPARSEKMAP=m
> > CONFIG_INPUT_MATRIXKMAP=m
> 
> ...
> 
> > CONFIG_DELL_RBTN=y
> 
> Please submit a fix as a new patch.

I believe that this patch is needed:

diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig
index 8c03223..d025fd8 100644
--- a/drivers/platform/x86/Kconfig
+++ b/drivers/platform/x86/Kconfig
@@ -141,6 +141,7 @@ config DELL_SMO8800
 config DELL_RBTN
 	tristate "Dell Airplane Mode Switch driver"
 	depends on ACPI
+	depends on INPUT
 	depends on RFKILL
 	---help---
 	  Say Y here if you want to support Dell Airplane Mode Switch ACPI

I did not tested it yet, but all other drivers depends on INPUT.

-- 
Pali Rohár
pali.rohar@...il.com

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