linux-kernel - Re: [BUGFIX PATCH 1/2] brcmfmac: Check rtnl_lock is locked when removing interface

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Message-ID: <15e43df4-b8cc-8612-472e-80634cf27cac@broadcom.com>
Date:	Mon, 15 Aug 2016 23:44:05 +0200
From:	Arend Van Spriel <arend.vanspriel@...adcom.com>
To:	Rafał Miłecki <zajec5@...il.com>,
	Kalle Valo <kvalo@...eaurora.org>
Cc:	Masami Hiramatsu <mhiramat@...nel.org>,
	Franky Lin <franky.lin@...adcom.com>,
	Hante Meuleman <hante.meuleman@...adcom.com>,
	Pieter-Paul Giesberts <pieterpg@...adcom.com>,
	"linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>,
	"open list:BROADCOM BRCM80211 IEEE802.11n WIRELESS DRIVER" 
	<brcm80211-dev-list.pdl@...adcom.com>,
	Network Development <netdev@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [BUGFIX PATCH 1/2] brcmfmac: Check rtnl_lock is locked when
 removing interface



On 15-8-2016 13:52, Rafał Miłecki wrote:
> On 15 August 2016 at 12:57, Kalle Valo <kvalo@...eaurora.org> wrote:
>> Rafał Miłecki <zajec5@...il.com> writes:
>>
>>>> Signed-off-by: Masami Hiramatsu <mhiramat@...nel.org>
>>>
>>> Fixes: a63b09872c1d ("brcmfmac: delete interface directly in code that sent fw request")
>>> Acked-by: Rafał Miłecki <rafal@...ecki.pl>
>>>
>>> Kalle: I'm acking this as bugfix for 4.8 release.
>>
>> Ok. I'll wait few days for more comments before I apply this.
> 
> Sure.
> 
> 
>> (I assume you are talking only about patch 1)
> 
> Yes, I'll leave mutex vs. spinlock to the experts :)

Don't know who the experts are. Surely not me :-p

I made an uneducated design decision using a mutex for this. The
reasoning for using a regular spinlock make sense. So I will go and ack
that patch.

Regards,
Arend