linux-kernel - Re: [PATCH 1/3] staging: r8188eu: remove _io

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Date:   Mon, 6 Sep 2021 10:49:11 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     "Fabio M. De Francesco" <fmdefrancesco@...il.com>
Cc:     Larry Finger <Larry.Finger@...inger.net>,
        Phillip Potter <phil@...lpotter.co.uk>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Pavel Skripkin <paskripkin@...il.com>
Subject: Re: [PATCH 1/3] staging: r8188eu: remove _io_ops structure

On Sat, Sep 04, 2021 at 05:04:45PM +0200, Fabio M. De Francesco wrote:
> -static int usb_writeN(struct intf_hdl *pintfhdl, u32 addr, u32 length, u8 *pdata)
> +int rtw_writeN(struct adapter *adapter, u32 addr, u32 length, u8 *pdata)
>  {
> +	struct io_priv *pio_priv = &adapter->iopriv;
> +	struct intf_hdl *pintfhdl = &pio_priv->intf;
>  	u16 wvalue = (u16)(addr & 0x0000ffff);
>  	u8 buf[VENDOR_CMD_MAX_DATA_LEN] = {0};
> +	int ret;
>  
>  	if (length > VENDOR_CMD_MAX_DATA_LEN)
>  		return -EINVAL;

The caller treats this negative return as success.

>  
>  	memcpy(buf, pdata, length);
> +	ret = usbctrl_vendorreq(pintfhdl, wvalue, buf, (length & 0xffff), REALTEK_USB_VENQT_WRITE);
>  
> -	return usbctrl_vendorreq(pintfhdl, wvalue, buf, (length & 0xffff), REALTEK_USB_VENQT_WRITE);
> +	return RTW_STATUS_CODE(ret);
>  }

[ snip ]


> -void usb_read_port_cancel(struct intf_hdl *pintfhdl)
> +void rtw_read_port_cancel(struct adapter *adapter)
>  {
>  	int i;
> -	struct recv_buf *precvbuf;
> -	struct adapter	*padapter = pintfhdl->padapter;
> -	precvbuf = (struct recv_buf *)padapter->recvpriv.precv_buf;
> +	struct recv_buf *precvbuf = (struct recv_buf *) adapter->recvpriv.precv_buf;
>  
>  	DBG_88E("%s\n", __func__);
>  
> -	padapter->bReadPortCancel = true;
> +	adapter->bReadPortCancel = true;

In these functions it would be better to rename "padapter" as "adapter"
in a follow on function.  Keep it the same for now just to make review
easier.

>  
>  	for (i = 0; i < NR_RECVBUFF; i++) {
>  		precvbuf->reuse = true;
> @@ -134,22 +124,21 @@ static void usb_write_port_complete(struct urb *purb, struct pt_regs *regs)
>  
>  }
>  
> -u32 usb_write_port(struct intf_hdl *pintfhdl, u32 addr, u32 cnt, u8 *wmem)
> +u32 rtw_write_port(struct adapter *adapter, u32 addr, u32 cnt, u8 *wmem)
>  {
>  	unsigned long irqL;
>  	unsigned int pipe;
>  	int status;
>  	u32 ret = _FAIL;
>  	struct urb *purb = NULL;
> -	struct adapter *padapter = (struct adapter *)pintfhdl->padapter;
> -	struct dvobj_priv	*pdvobj = adapter_to_dvobj(padapter);
> -	struct xmit_priv	*pxmitpriv = &padapter->xmitpriv;
> +	struct dvobj_priv	*pdvobj = adapter_to_dvobj(adapter);
> +	struct xmit_priv	*pxmitpriv = &adapter->xmitpriv;
>  	struct xmit_buf *pxmitbuf = (struct xmit_buf *)wmem;
>  	struct xmit_frame *pxmitframe = (struct xmit_frame *)pxmitbuf->priv_data;
>  	struct usb_device *pusbd = pdvobj->pusbdev;
>  
> -	if ((padapter->bDriverStopped) || (padapter->bSurpriseRemoved) ||
> -	    (padapter->pwrctrlpriv.pnp_bstop_trx)) {
> +	if ((adapter->bDriverStopped) || (adapter->bSurpriseRemoved) ||
> +	    (adapter->pwrctrlpriv.pnp_bstop_trx)) {

Here too etc.  And below.

regards,
dan carpenter

>  		rtw_sctx_done_err(&pxmitbuf->sctx, RTW_SCTX_DONE_TX_DENY);
>  		goto exit;
>  	}
> @@ -196,7 +185,7 @@ u32 usb_write_port(struct intf_hdl *pintfhdl, u32 addr, u32 cnt, u8 *wmem)
>  
>  	status = usb_submit_urb(purb, GFP_ATOMIC);
>  	if (!status) {
> -		struct hal_data_8188e	*haldata = GET_HAL_DATA(padapter);
> +		struct hal_data_8188e	*haldata = GET_HAL_DATA(adapter);
>  
>  		haldata->srestpriv.last_tx_time = jiffies;
>  	} else {
> @@ -205,7 +194,7 @@ u32 usb_write_port(struct intf_hdl *pintfhdl, u32 addr, u32 cnt, u8 *wmem)
>  
>  		switch (status) {
>  		case -ENODEV:
> -			padapter->bDriverStopped = true;
> +			adapter->bDriverStopped = true;
>  			break;
>  		default:
>  			break;
> @@ -224,15 +213,14 @@ u32 usb_write_port(struct intf_hdl *pintfhdl, u32 addr, u32 cnt, u8 *wmem)
>  	return ret;
>  }
>  
> -void usb_write_port_cancel(struct intf_hdl *pintfhdl)
> +void rtw_write_port_cancel(struct adapter *adapter)
>  {
>  	int i, j;
> -	struct adapter	*padapter = pintfhdl->padapter;
> -	struct xmit_buf *pxmitbuf = (struct xmit_buf *)padapter->xmitpriv.pxmitbuf;
> +	struct xmit_buf *pxmitbuf = (struct xmit_buf *) adapter->xmitpriv.pxmitbuf;
>  
>  	DBG_88E("%s\n", __func__);
>  
> -	padapter->bWritePortCancel = true;
> +	adapter->bWritePortCancel = true;
>  
>  	for (i = 0; i < NR_XMITBUFF; i++) {
>  		for (j = 0; j < 8; j++) {
> @@ -242,7 +230,7 @@ void usb_write_port_cancel(struct intf_hdl *pintfhdl)
>  		pxmitbuf++;
>  	}
>  
> -	pxmitbuf = (struct xmit_buf *)padapter->xmitpriv.pxmit_extbuf;
> +	pxmitbuf = (struct xmit_buf *) adapter->xmitpriv.pxmit_extbuf;
>  	for (i = 0; i < NR_XMIT_EXTBUFF; i++) {
>  		for (j = 0; j < 8; j++) {
>  			if (pxmitbuf->pxmit_urb[j])
> -- 
> 2.33.0
>