linux-kernel - Re: linux-next: build warning after merge of the wireless-drivers-next tree

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Message-ID: <87vatdhpo4.fsf@purkki.adurom.net>
Date:   Tue, 17 Jan 2017 13:49:31 +0200
From:   Kalle Valo <kvalo@...eaurora.org>
To:     Stephen Rothwell <sfr@...b.auug.org.au>
Cc:     Wireless <linux-wireless@...r.kernel.org>,
        linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
        Xinming Hu <huxm@...vell.com>,
        Amitkumar Karwar <akarwar@...vell.com>
Subject: Re: linux-next: build warning after merge of the wireless-drivers-next tree

Kalle Valo <kvalo@...eaurora.org> writes:

> Stephen Rothwell <sfr@...b.auug.org.au> writes:
>
>> Hi all,
>>
>> After merging the wireless-drivers-next tree, today's linux-next build
>> (x86_64 allmodconfig) produced this warning:
>>
>> drivers/net/wireless/marvell/mwifiex/pcie.c: In function 'mwifiex_pcie_remove':
>> drivers/net/wireless/marvell/mwifiex/pcie.c:303:5: warning: 'fw_status' may be used uninitialized in this function [-Wmaybe-uninitialized]
>>   if (fw_status == FIRMWARE_READY_PCIE && !adapter->mfg_mode) {
>>      ^
>>
>> Introduced by commit
>>
>>   045f0c1b5e26 ("mwifiex: get rid of global user_rmmod flag")
>>
>> This is not a false positive since "reg" could be NULL just above
>> (otherwise it would be tested for).
>
> Thanks, I noticed this myself yesterday (after I had applied the patch)
> and I have asked Marvell to send a fix.

I missed that Arnd had already sent a fix, I'll apply that one:

mwifiex: fix uninitialized variable access in pcie_remove

https://patchwork.kernel.org/patch/9515899/

-- 
Kalle Valo