linux-kernel - Re: [BUG ?] rtlwifi: rtl8723be: condition with no effect

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Message-ID: <557D9B09.7020100@lwfinger.net>
Date:	Sun, 14 Jun 2015 10:17:29 -0500
From:	Larry Finger <Larry.Finger@...inger.net>
To:	Nicholas Mc Guire <hofrat@...dl.org>
CC:	Chaoming Li <chaoming_li@...lsil.com.cn>,
	Kalle Valo <kvalo@...eaurora.org>,
	"John W. Linville" <linville@...driver.com>,
	Jiri Kosina <jkosina@...e.cz>,
	Randy Dunlap <rdunlap@...radead.org>,
	Masanari Iida <standby24x7@...il.com>,
	linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [BUG ?] rtlwifi: rtl8723be: condition with no effect

On 06/13/2015 05:43 AM, Nicholas Mc Guire wrote:
> From: Nicholas Mc Guire <hofrat@...dl.org>
>
> scanning for trivial bug-patters with coccinelle spatches returned:
> ./drivers/net/wireless/rtlwifi/rtl8723be/dm.c:886
> 	WARNING: condition with no effect (if branch == else)
>
> Added in 'commit a619d1abe20c ("rtlwifi: rtl8723be: Add new driver")'
>
> drivers/net/wireless/rtlwifi/rtl8723be/dm.c - line numbers from 4.1-rc7
> 886         if (thermalvalue > rtlefuse->eeprom_thermalmeter)
> 887                 rtl8723be_dm_tx_power_track_set_power(hw, BBSWING, 0,
> 888						 	index_for_channel);
> 889         else
> 890                 rtl8723be_dm_tx_power_track_set_power(hw, BBSWING, 0,
> 891							index_for_channel);
>
> Can't figure out what the intent of this condition is but it currently has
> no effect as if == else and this most likely is not the intent.

I do not know what the correct code should be here, but I will contact the 
Realtek engineers and get their interpretation. In the meantime, please do not 
change this code.

Thanks,

Larry


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