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

From: Pali Rohár <[email-masked]>
Date: Thu, 21 May 2015 22:07:11 +0200

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
[email-masked]