linux-kernel - Re: [PATCH] brcmfmac: Do not crash if platform data is not populated

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Message-ID: <54999161.504@broadcom.com>
Date:	Tue, 23 Dec 2014 16:59:29 +0100
From:	Arend van Spriel <arend@...adcom.com>
To:	Mika Westerberg <mika.westerberg@...ux.intel.com>
CC:	<linux-wireless@...r.kernel.org>,
	Brett Rudley <brudley@...adcom.com>,
	Hante Meuleman <meuleman@...adcom.com>,
	Kalle Valo <kvalo@...eaurora.org>,
	"John W. Linville" <linville@...driver.com>,
	Christophe Prigent <christophe.prigent@...el.com>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] brcmfmac: Do not crash if platform data is not populated

On 12/23/14 16:47, Mika Westerberg wrote:
> On Tue, Dec 23, 2014 at 04:37:21PM +0100, Arend van Spriel wrote:
>> On 12/23/14 15:48, Mika Westerberg wrote:
>>> The driver looks for pdata->oob_irq_supported to find out if wowl can be
>>> supported. However, not all platforms populate pdata in which case we crash
>>> the kernel because of NULL pointer dereference.
>>
>> Thanks, Mika
>>
>> However, this was already reported by Dan Carpenter and I submitted a patch
>> for that a couple of days ago: "[PATCH 02/10] brcmfmac: Fix possible
>> dereference of NULL pointer." [1].
>>
>> Regards,
>> Arend
>>
>> [1]
>> http://mid.gmane.org/1419162233-19492-3-git-send-email-arend@broadcom.com
>
> Oh, good. I didn't notice that one.
>
> Thanks for fixing it :)
>
> BTW, that patch seems to miss brcmf_ops_sdio_resume(), perhaps it is
> fixed in another patch?

Aargh, a nice "BTW" this is as there is no other patch for the resume 
code. Maybe I should ask Kalle to apply your patch instead of ours. If 
it did not already got applied.

Regards,
Arend
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