linux-kernel - Re: [PATCH] base/platform: Fix platform drivers with no probe callback (ex alarmtimer)

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Message-ID: <alpine.LFD.2.20.1601051157580.2148@terrop.lan>
Date:	Tue, 5 Jan 2016 12:02:23 +0200 (EET)
From:	Tero Roponen <tero.roponen@...il.com>
To:	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>
cc:	Martin Fuzzey <mfuzzey@...keon.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] base/platform: Fix platform drivers with no probe callback
 (ex alarmtimer)


On Tue, 5 Jan 2016, Uwe Kleine-König wrote:

> Hello,
> 
> I think this is the same problem that another Martin found and fixed in
> 
> http://mid.gmane.org/1449132704-9952-1-git-send-email-martin.wilck@ts.fujitsu.com
> 
> I didn't check, but thought Greg already picked that up?!

I can confirm that applying the patch in that link to 4.4-rc8 fixes the
following problem I've seen since 4.4-rc5:

BUG: unable to handle kernel NULL pointer dereference at 0000000000000e20
IP: [<ffffffffa017835e>] asus_sysfs_is_visible+0xe/0x1d0 [asus_laptop]

So:

Tested-by: Tero Roponen <tero.roponen@...il.com>