linux-kernel - Re: [PATCH v2] net: wireless: rtlwifi: rtl8188ee: hw.c: Cleaning up if statement that always evaluates to false

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Message-ID: <2259587.sBdtJmoxcK@al>
Date:	Sat, 14 Jun 2014 15:28:37 +0200
From:	Peter Wu <peter@...ensteyn.nl>
To:	Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se>
Cc:	Larry Finger <Larry.Finger@...inger.net>,
	Chaoming Li <chaoming_li@...lsil.com.cn>,
	"John W. Linville" <linville@...driver.com>,
	Joe Perches <joe@...ches.com>, linux-wireless@...r.kernel.org,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] net: wireless: rtlwifi: rtl8188ee: hw.c:  Cleaning up if statement that always evaluates to false

On Saturday 14 June 2014 15:24:32 Rickard Strandqvist wrote:
> I found a logical error in an if statement that always evaluates to false.
> 
> This has after same discussion resulted in that we add a macro to handle this.

This commit message is useless. If you really need to refer to a mailing
list thread, use something like:

Link: http://lkml.kernel.org/r/MESSAGE_ID_HERE

... but it would even be better if you *explain* why the previous behavior
is wrong, and what this patch does in an attempt to fix that.

> Signed-off-by: Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se>
> ---
>  drivers/net/wireless/rtlwifi/rtl8188ee/hw.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/net/wireless/rtlwifi/rtl8188ee/hw.c b/drivers/net/wireless/rtlwifi/rtl8188ee/hw.c
> index 94cd9df..9bdac68 100644
> --- a/drivers/net/wireless/rtlwifi/rtl8188ee/hw.c
> +++ b/drivers/net/wireless/rtlwifi/rtl8188ee/hw.c
> @@ -1231,7 +1231,7 @@ static int _rtl88ee_set_media_status(struct ieee80211_hw *hw,
>  
>  	rtl_write_byte(rtlpriv, (MSR), bt_msr);
>  	rtlpriv->cfg->ops->led_control(hw, ledaction);
> -	if ((bt_msr & 0xfc) == MSR_AP)
> +	if ((bt_msr & MSR_MASK) == MSR_AP)

There is no such constant as MSR_MASK. Please compile test before sending.

>  		rtl_write_byte(rtlpriv, REG_BCNTCFG + 1, 0x00);
>  	else
>  		rtl_write_byte(rtlpriv, REG_BCNTCFG + 1, 0x66);
> 

Kind regards,
Peter

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