linux-kernel - Re: [PATCH net-next 2/6] net: ipa: reorder netdev pointer assignments

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Message-ID: <9b87849f-6008-2fa4-3d5e-2c7269f5a597@ieee.org>
Date:   Fri, 6 Aug 2021 06:39:53 -0500
From:   Alex Elder <elder@...e.org>
To:     Jakub Kicinski <kuba@...nel.org>, Alex Elder <elder@...aro.org>
Cc:     davem@...emloft.net, bjorn.andersson@...aro.org,
        evgreen@...omium.org, cpratapa@...eaurora.org,
        subashab@...eaurora.org, elder@...nel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next 2/6] net: ipa: reorder netdev pointer assignments

On 8/5/21 8:41 PM, Jakub Kicinski wrote:
> On Thu, 5 Aug 2021 18:27:12 -0700 Jakub Kicinski wrote:
>> On Wed,  4 Aug 2021 10:36:22 -0500 Alex Elder wrote:
>>> Assign the ipa->modem_netdev and endpoint->netdev pointers *before*
>>> registering the network device.  As soon as the device is
>>> registered it can be opened, and by that time we'll want those
>>> pointers valid.
>>>
>>> Similarly, don't make those pointers NULL until *after* the modem
>>> network device is unregistered in ipa_modem_stop().
>>>
>>> Signed-off-by: Alex Elder <elder@...aro.org>
>>
>> This one seems like a pretty legit race, net would be better if you
>> don't mind.
> 
> Ah, this set was already applied, don't mind me :)

I really appreciate your review and feedback.  Applied or not,
it's valuable to me.

					-Alex