linux-kernel - Re: iwlwifi: mvm: BACKPORT_WANT_DEV

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Date:	Fri, 31 Oct 2014 10:06:37 +0100
From:	Paul Bolle <pebolle@...cali.nl>
To:	Johannes Berg <johannes@...solutions.net>
Cc:	Valentin Rothberg <valentinrothberg@...il.com>,
	Emmanuel Grumbach <emmanuel.grumbach@...el.com>,
	"John W. Linville" <linville@...driver.com>,
	Intel Linux Wireless <ilw@...ux.intel.com>,
	linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: iwlwifi: mvm:  BACKPORT_WANT_DEV_COREDUMP?

On Fri, 2014-10-31 at 09:45 +0100, Johannes Berg wrote:
> On Fri, 2014-10-31 at 09:40 +0100, Paul Bolle wrote:
> > Your commit aadede6e9f4c ("iwlwifi: mvm: port to devcoredump framework")
> > landed in today's linux-next (next-20141031). It adds a select statement
> > for BACKPORT_WANT_DEV_COREDUMP. There's no Kconfig symbol 
> > BACKPORT_WANT_DEV_COREDUMP so this select is currently a nop. (In
> > https://lkml.org/lkml/2014/9/30/578 I proposed a patch that emits a
> > warning in cases like this.)
> > 
> > Did you perhaps meant to select WANT_DEV_COREDUMP?
> 
> Yes. We'll fix it up in the iwlwifi tree.
> 
> Thanks for the report!

Perhaps you could also look into somehow guarding the call of
dev_coredumpm(), that this commit added, with checks for
CONFIG_DEV_COREDUMP. See, I had a quick look at all this and selecting
WANT_DEV_COREDUMP might not be enough, because DISABLE_DEV_COREDUMP can
still, well, disable DEV_COREDUMP. Or am I misreading the Kconfig
symbols that regulate DEV_COREDUMP?

Thanks,


Paul Bolle

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