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

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Message-ID: <a1364db5-6700-49b6-1435-db9abf00f55d@rock-chips.com>
Date:   Wed, 16 Nov 2016 21:28:43 +0800
From:   wlf <wulf@...k-chips.com>
To:     Stephen Rothwell <sfr@...b.auug.org.au>,
        Kishon Vijay Abraham I <kishon@...com>
Cc:     linux-next@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: linux-next: build warning after merge of the phy-next tree

Hi Stephen，

在 2016年11月16日 11:00, Stephen Rothwell 写道:
> Hi Kishon,
>
> After merging the phy-next tree, today's linux-next build (x86_64
> allmodconfig) produced this warning:
>
> drivers/phy/phy-rockchip-inno-usb2.c: In function 'rockchip_chg_detect_work':
> drivers/phy/phy-rockchip-inno-usb2.c:717:7: warning: 'tmout' may be used uninitialized in this function [-Wmaybe-uninitialized]
>      if (tmout) {
>         ^
>
> Introduced by commit
>
>    0c42fe48fd23 ("phy: rockchip-inno-usb2: support otg-port for rk3399")
The variable "tmout" is initialized in the prior  code "case 
USB_CHG_STATE_WAIT_FOR_DCD",
and this case will be executed before "if (tmout)", so I think it's a 
mis-warning for some
special compiler.

Could you provide me some suggestion about this warning? Should I upload 
a new patch to
fix this compiler mis-warning or just ignore it ？ :-)

Best regards，
          wulf

>