Re: [PATCH] staging: r8188eu: os_dep: remove the goto statement

From: Saurav Girepunje
Date: Tue Nov 02 2021 - 12:39:54 EST




On 01/11/21 6:31 pm, Greg KH wrote:
> On Sun, Oct 31, 2021 at 11:40:18PM +0530, Saurav Girepunje wrote:
>> Remove the goto statement from rtw_init_drv_sw(). In this function goto
>> can be replace by return statement. As on goto label exit, function
>> only return it is not performing any cleanup. Avoiding goto will
>> improve the function readability.
>>
>> Signed-off-by: Saurav Girepunje <saurav.girepunje@xxxxxxxxx>
>> ---
>> drivers/staging/r8188eu/os_dep/os_intfs.c | 39 +++++++----------------
>> 1 file changed, 12 insertions(+), 27 deletions(-)
>>
>> diff --git a/drivers/staging/r8188eu/os_dep/os_intfs.c b/drivers/staging/r8188eu/os_dep/os_intfs.c
>> index 1418c9c4916c..4b409479108e 100644
>> --- a/drivers/staging/r8188eu/os_dep/os_intfs.c
>> +++ b/drivers/staging/r8188eu/os_dep/os_intfs.c
>> @@ -480,48 +480,34 @@ u8 rtw_init_drv_sw(struct adapter *padapter)
>> {
>> u8 ret8 = _SUCCESS;
>>
>> - if ((rtw_init_cmd_priv(&padapter->cmdpriv)) == _FAIL) {
>> - ret8 = _FAIL;
>> - goto exit;
>> - }
>> + if (!rtw_init_cmd_priv(&padapter->cmdpriv))
>> + return _FAIL;
>>
>> padapter->cmdpriv.padapter = padapter;
>>
>> - if ((rtw_init_evt_priv(&padapter->evtpriv)) == _FAIL) {
>> - ret8 = _FAIL;
>> - goto exit;
>> - }
>> -
>> - if (rtw_init_mlme_priv(padapter) == _FAIL) {
>> - ret8 = _FAIL;
>> - goto exit;
>> - }
>> + if (!rtw_init_evt_priv(&padapter->evtpriv) || !rtw_init_mlme_priv(padapter))
>> + return _FAIL;
>
> These are functions that are being called so keeping them separate as
> the code you removed did makes it "obvious" what is happening here.
>
> So can you keep it that way please?
>
I will make them separate as they were.

> But my larger question is do these functions create state or allocate
> memory that needs to be unwound properly if an error does happen? Right
> now the function seems to not be doing that at all, but that does not
> mean it is correct as-is...
>
> thanks,
>
> greg k-h
> Regards,
Saurav