Re: [PATCH 1/3] staging: r8188eu: remove _io_ops structure

Pavel Skripkin
2021-09-06T14:04:49Z

On 9/6/21 10:49 AM, Dan Carpenter wrote:
> 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.
>

Oh, good catch, thank you so much for pointing it out... This driver
uses unusual approach for error handling with private _SUCCESS and _FAIL
macros and I forgot to call RTW_ERROR_CODE :(

>>
>> 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.
>

Ok, will bring old name back in v4. Thank you for review :)

With regards,
Pavel Skripkin