linux-kernel - Re: [PATCH 3/8] staging: r8188eu: remove two checks that are always false

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Date:   Sun, 17 Oct 2021 13:48:58 +0200
From:   Michael Straube <straube.linux@...il.com>
To:     Martin Kaiser <martin@...ser.cx>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Larry Finger <Larry.Finger@...inger.net>,
        Phillip Potter <phil@...lpotter.co.uk>,
        linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/8] staging: r8188eu: remove two checks that are always
 false

On 10/16/21 13:30, Martin Kaiser wrote:
> Commit aefb1fc5c185 ("staging: r8188eu: odm BoardType is never set")
> clarified that the odm board type is always 0.
> 
> The CheckCondition functions extract the board type from the hex
> parameter and stores it in _board. For _board == 0,
> (_board == cond) && cond != 0x00 is always false. Remove the checks.
> 
> Signed-off-by: Martin Kaiser <martin@...ser.cx>
> ---
>   drivers/staging/r8188eu/hal/HalHWImg8188E_BB.c | 5 -----
>   drivers/staging/r8188eu/hal/HalHWImg8188E_RF.c | 5 -----
>   2 files changed, 10 deletions(-)
> 
> diff --git a/drivers/staging/r8188eu/hal/HalHWImg8188E_BB.c b/drivers/staging/r8188eu/hal/HalHWImg8188E_BB.c
> index a623e0aaa0d0..f6e4243e0c7b 100644
> --- a/drivers/staging/r8188eu/hal/HalHWImg8188E_BB.c
> +++ b/drivers/staging/r8188eu/hal/HalHWImg8188E_BB.c
> @@ -13,7 +13,6 @@
>   
>   static bool CheckCondition(const u32  condition, const u32  hex)
>   {
> -	u32 _board     = (hex & 0x000000FF);
>   	u32 _interface = (hex & 0x0000FF00) >> 8;
>   	u32 _platform  = (hex & 0x00FF0000) >> 16;
>   	u32 cond = condition;
> @@ -21,10 +20,6 @@ static bool CheckCondition(const u32  condition, const u32  hex)
>   	if (condition == 0xCDCDCDCD)
>   		return true;
>   
> -	cond = condition & 0x000000FF;
> -	if ((_board == cond) && cond != 0x00)
> -		return false;
> -
>   	cond = condition & 0x0000FF00;
>   	cond = cond >> 8;
>   	if ((_interface & cond) == 0 && cond != 0x07)
> diff --git a/drivers/staging/r8188eu/hal/HalHWImg8188E_RF.c b/drivers/staging/r8188eu/hal/HalHWImg8188E_RF.c
> index 3e2a09fc2619..5e0a96200078 100644
> --- a/drivers/staging/r8188eu/hal/HalHWImg8188E_RF.c
> +++ b/drivers/staging/r8188eu/hal/HalHWImg8188E_RF.c
> @@ -6,7 +6,6 @@
>   
>   static bool CheckCondition(const u32  Condition, const u32  Hex)
>   {
> -	u32 _board     = (Hex & 0x000000FF);
>   	u32 _interface = (Hex & 0x0000FF00) >> 8;
>   	u32 _platform  = (Hex & 0x00FF0000) >> 16;
>   	u32 cond = Condition;
> @@ -14,10 +13,6 @@ static bool CheckCondition(const u32  Condition, const u32  Hex)
>   	if (Condition == 0xCDCDCDCD)
>   		return true;
>   
> -	cond = Condition & 0x000000FF;
> -	if ((_board == cond) && cond != 0x00)
> -		return false;
> -
>   	cond = Condition & 0x0000FF00;
>   	cond = cond >> 8;
>   	if ((_interface & cond) == 0 && cond != 0x07)
> 


Acked-by: Michael Straube <straube.linux@...il.com>