linux-kernel - Re: linux-next: build failure after merge of the mfd tree

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <4FBA18C7.4030800@linaro.org>
Date:	Mon, 21 May 2012 11:28:23 +0100
From:	Lee Jones <lee.jones@...aro.org>
To:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
CC:	Stephen Rothwell <sfr@...b.auug.org.au>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	Linus Walleij <linus.walleij@...aro.org>
Subject: Re: linux-next: build failure after merge of the mfd tree

> Since there's no dependencies which would stop it being selected
> anything like allyesconfig or randconfig might enable it.  In general
> it's normal to allow this in order to make it easier to build test
> things like subsystem wide changes.

Ah, I see. In which case Stephen was correct in that it's an issue with 
Kconfig logic (but not an issue with the patch alluded to). I'm going to 
have to pass this one over to Linus (CC'ed), as it's his train-set and I 
don't want to do the wrong thing.

Linus,

When CONFIG_AB8500_CORE is set, building ab8500-core.c and 
!(CONFIG_UX500_SOC_DB8500 | CONFIG_MFD_DB8500_PRCMU), both 
db8500-prcmu.h and dbx500-prcmu.h take it upon themselves to _both_ 
create 'return 0' inline functions for the following:

prcmu_abb_read()
prcmu_abb_write()
prcmu_config_clkout()
prcmu_ac_wake_req()
prcmu_ac_sleep_req()

I think we need a Kconfig rule to prevent this from happening, but I'm 
not sure what the correct logic would be. The other option would be to 
explicitly include db8500-prcmu.h instead of dbx500-prcmu.h in 
ab0500-core.c (which in turn includes db8500-prcmu.h (and used to 
include db5500-prcmu.h)), but this seems wrong to me.

As you have a clearer insight to these things would you care to take 
this on?

Kind regards,
Lee

-- 
Lee Jones
Linaro ST-Ericsson Landing Team Lead
M: +44 77 88 633 515
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/