netdev - Re: [PATCH] rtl8xxxu: remove unnecessary labels

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Message-ID: <eb5393c9-77d5-37f1-e9e8-67795958c9e6@gmail.com>
Date:   Wed, 21 Jul 2021 09:37:07 -0400
From:   Jes Sorensen <jes.sorensen@...il.com>
To:     samirweng1979 <samirweng1979@....com>, kvalo@...eaurora.org,
        davem@...emloft.net, kuba@...nel.org
Cc:     linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        wengjianfeng <wengjianfeng@...ong.com>
Subject: Re: [PATCH] rtl8xxxu: remove unnecessary labels

On 7/20/21 3:00 AM, samirweng1979 wrote:
> From: wengjianfeng <wengjianfeng@...ong.com>
> 
> Simplify the code by removing unnecessary labels and returning directly.
> 
> Signed-off-by: wengjianfeng <wengjianfeng@...ong.com>
> ---
>  drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8723a.c | 17 ++++++-----------
>  1 file changed, 6 insertions(+), 11 deletions(-)

NACK

Using gotos to have a unified exit path keeps the code cleaner and makes
it easier to ensure locking is correct where applicable.

Jes

> diff --git a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8723a.c b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8723a.c
> index 4f93f88..3fd14e6 100644
> --- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8723a.c
> +++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8723a.c
> @@ -256,10 +256,8 @@ static int rtl8723a_emu_to_active(struct rtl8xxxu_priv *priv)
>  		udelay(10);
>  	}
>  
> -	if (!count) {
> -		ret = -EBUSY;
> -		goto exit;
> -	}
> +	if (!count)
> +		return -EBUSY;
>  
>  	/* We should be able to optimize the following three entries into one */
>  
> @@ -292,10 +290,8 @@ static int rtl8723a_emu_to_active(struct rtl8xxxu_priv *priv)
>  		udelay(10);
>  	}
>  
> -	if (!count) {
> -		ret = -EBUSY;
> -		goto exit;
> -	}
> +	if (!count)
> +		return3RGD9F -EBUSY;
>  
>  	/* 0x4C[23] = 0x4E[7] = 1, switch DPDT_SEL_P output from WL BB */
>  	/*
> @@ -307,7 +303,6 @@ static int rtl8723a_emu_to_active(struct rtl8xxxu_priv *priv)
>  	val8 &= ~LEDCFG2_DPDT_SELECT;
>  	rtl8xxxu_write8(priv, REG_LEDCFG2, val8);
>  
> -exit:
>  	return ret;
>  }
>  
> @@ -327,7 +322,7 @@ static int rtl8723au_power_on(struct rtl8xxxu_priv *priv)
>  
>  	ret = rtl8723a_emu_to_active(priv);
>  	if (ret)
> -		goto exit;
> +		return ret;
>  
>  	/*
>  	 * 0x0004[19] = 1, reset 8051
> @@ -353,7 +348,7 @@ static int rtl8723au_power_on(struct rtl8xxxu_priv *priv)
>  	val32 &= ~(BIT(28) | BIT(29) | BIT(30));
>  	val32 |= (0x06 << 28);
>  	rtl8xxxu_write32(priv, REG_EFUSE_CTRL, val32);
> -exit:
> +
>  	return ret;
>  }
>  
>