linux-kernel - Re: [PATCH] staging: r8188eu: convert rtw

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Date:   Sun, 8 Jan 2023 17:43:47 +0100
From:   Philipp Hortmann <philipp.g.hortmann@...il.com>
To:     Michael Straube <straube.linux@...il.com>,
        gregkh@...uxfoundation.org
Cc:     Larry.Finger@...inger.net, phil@...lpotter.co.uk,
        linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] staging: r8188eu: convert rtw_writeN() to common error
 logic

On 1/8/23 13:38, Michael Straube wrote:
> Convert the function rtw_writeN() away from returning _FAIL or
> _SUCCESS which uses inverted error logic. Use the common error logic
> instead. Return 0 for success and negative values for failure.
> 
> Signed-off-by: Michael Straube <straube.linux@...il.com>
> ---
> Tested on x86_64 with Inter-Tech DMG-02.
> 
>   drivers/staging/r8188eu/core/rtw_fw.c       | 10 ++++------
>   drivers/staging/r8188eu/hal/usb_ops_linux.c |  7 ++-----
>   2 files changed, 6 insertions(+), 11 deletions(-)
> 
> diff --git a/drivers/staging/r8188eu/core/rtw_fw.c b/drivers/staging/r8188eu/core/rtw_fw.c
> index 682c65b1e04c..1e4baf74ecd5 100644
> --- a/drivers/staging/r8188eu/core/rtw_fw.c
> +++ b/drivers/staging/r8188eu/core/rtw_fw.c
> @@ -89,9 +89,8 @@ static int block_write(struct adapter *padapter, u8 *buffer, u32 size)
>   		addr = FW_8188E_START_ADDRESS + i * block_size;
>   		data = buffer + i * block_size;
>   
> -		ret = rtw_writeN(padapter, addr, block_size, data);
> -		if (ret == _FAIL)
> -			goto exit;
> +		if (rtw_writeN(padapter, addr, block_size, data))
> +			return _FAIL;
>   	}
>   
>   	if (remain) {
> @@ -105,9 +104,8 @@ static int block_write(struct adapter *padapter, u8 *buffer, u32 size)
>   			addr = FW_8188E_START_ADDRESS + offset + i * block_size;
>   			data = buffer + offset + i * block_size;
>   
> -			ret = rtw_writeN(padapter, addr, block_size, data);
> -			if (ret == _FAIL)
> -				goto exit;
> +			if (rtw_writeN(padapter, addr, block_size, data))
> +				return _FAIL;
>   		}
>   	}
>   
> diff --git a/drivers/staging/r8188eu/hal/usb_ops_linux.c b/drivers/staging/r8188eu/hal/usb_ops_linux.c
> index 7c72f5e04d9b..f02f8568cdcf 100644
> --- a/drivers/staging/r8188eu/hal/usb_ops_linux.c
> +++ b/drivers/staging/r8188eu/hal/usb_ops_linux.c
> @@ -179,14 +179,11 @@ int rtw_writeN(struct adapter *adapter, u32 addr, u32 length, u8 *data)
>   	struct io_priv *io_priv = &adapter->iopriv;
>   	struct intf_hdl *intf = &io_priv->intf;
>   	u16 value = addr & 0xffff;
> -	int ret;
>   
>   	if (length > VENDOR_CMD_MAX_DATA_LEN)
> -		return _FAIL;
> +		return -EINVAL;
>   
> -	ret = usb_write(intf, value, data, length);
> -
> -	return RTW_STATUS_CODE(ret);
> +	return usb_write(intf, value, data, length);
>   }
>   
>   static void handle_txrpt_ccx_88e(struct adapter *adapter, u8 *buf)

Tested-by: Philipp Hortmann <philipp.g.hortmann@...il.com> # Edimax N150