linux-kernel - Re: [PATCH] mwifiex: uninit wakeup info when failed to add card

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20170705180813.GA115427@google.com>
Date:   Wed, 5 Jul 2017 11:08:15 -0700
From:   Brian Norris <briannorris@...omium.org>
To:     Jeffy Chen <jeffy.chen@...k-chips.com>
Cc:     linux-wireless@...r.kernel.org, akarwar@...vell.com,
        Xinming Hu <huxm@...vell.com>,
        Kalle Valo <kvalo@...eaurora.org>,
        Ganapathi Bhat <gbhat@...vell.com>,
        Amitkumar Karwar <amitkarwar@...il.com>,
        linux-kernel@...r.kernel.org,
        Nishant Sarmukadam <nishants@...vell.com>,
        netdev@...r.kernel.org
Subject: Re: [PATCH] mwifiex: uninit wakeup info when failed to add card

On Mon, Jul 03, 2017 at 03:54:30PM +0800, Jeffy Chen wrote:
> We inited wakeup info at the beginning of mwifiex_add_card, so we need
> to uninit it in the error handling.
> 
> It's much the same as what we did in:
> 36908c4 mwifiex: uninit wakeup info when removing device

Yeah, I noticed I hadn't covered all the error cases, so your change is
part of the fix. But you're not covering the error paths when the
firmware doesn't load correctly -- this happens asynchronously to
mwifiex_add_card(). i.e., you need to fixup the error paths in
_mwifiex_fw_dpc() too.

Brian

> Signed-off-by: Jeffy Chen <jeffy.chen@...k-chips.com>
> 
> ---
> 
>  drivers/net/wireless/marvell/mwifiex/main.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/net/wireless/marvell/mwifiex/main.c b/drivers/net/wireless/marvell/mwifiex/main.c
> index f2600b8..17d2cbe 100644
> --- a/drivers/net/wireless/marvell/mwifiex/main.c
> +++ b/drivers/net/wireless/marvell/mwifiex/main.c
> @@ -1655,6 +1655,8 @@ mwifiex_add_card(void *card, struct completion *fw_done,
>  		mwifiex_shutdown_drv(adapter);
>  	}
>  err_kmalloc:
> +	if (adapter->irq_wakeup >= 0)
> +		device_init_wakeup(adapter->dev, false);
>  	mwifiex_free_adapter(adapter);
>  
>  err_init_sw:
> -- 
> 2.1.4
> 
>