linux-kernel - Re: [Outreachy kernel] [PATCH 4/4] staging: rtl8723bs: Change the type and use of a variable

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Date:   Sat, 10 Apr 2021 14:12:28 +0200 (CEST)
From:   Julia Lawall <julia.lawall@...ia.fr>
To:     "Fabio M. De Francesco" <fmdefrancesco@...il.com>
cc:     Greg KH <gregkh@...uxfoundation.org>,
        outreachy-kernel@...glegroups.com, linux-staging@...ts.linux.dev,
        linux-kernel@...r.kernel.org
Subject: Re: [Outreachy kernel] [PATCH 4/4] staging: rtl8723bs: Change the
 type and use of a variable



On Sat, 10 Apr 2021, Fabio M. De Francesco wrote:

> On Saturday, April 10, 2021 1:37:30 PM CEST Julia Lawall wrote:
> > > That variable has global scope and is assigned at least in:
> > What do you mean by global scope?  None of the following look like
> > references to global variables.
> >
> > julia
> I just mean that fw_current_in_ps_mode is a field of a struct in a .h file
> included everywhere in this driver and that the functions whom the
> following assignments belong to have not the "static" type modifier.

OK, but a field in a structure is not a variable, and this is not what
scope means.

int x;

outside of anything is a global variable (global scope).

int foo() {
  int x;
  ...
}

Here x is a local variable.  Its scope is the body of the function.

int foo() {
  if (abc) {
    int x;
    ...
  }
}

Here x is a local variable, but its scope is only in the if branch.

julia

>
> Thanks,
>
> Fabio
> >
> > > drivers/staging/rtl8723bs/core/rtw_pwrctrl.c:368:
> > > pwrpriv->fw_current_in_ps_mode = false;
> > >
> > > drivers/staging/rtl8723bs/core/rtw_pwrctrl.c:380:
> > > pwrpriv->fw_current_in_ps_mode = true;
> > >
> > > drivers/staging/rtl8723bs/hal/rtl8723b_hal_init.c:433:
> > > adapter_to_pwrctl(padapter)->fw_current_in_ps_mode = false;
> > >
> > > drivers/staging/rtl8723bs/core/rtw_pwrctrl.c:981:
> > > pwrctrlpriv->fw_current_in_ps_mode = false;
>
>
>
>
>