Re: [PATCH] staging: rtl8712: remove unused variables
From: Sudip Mukherjee
Date: Mon Oct 27 2014 - 07:52:37 EST
On Mon, Oct 27, 2014 at 02:13:12PM +0300, Dan Carpenter wrote:
> On Sun, Oct 26, 2014 at 06:03:33PM +0530, Sudip Mukherjee wrote:
> > @@ -262,7 +257,7 @@ static u8 rtl8712_dl_fw(struct _adapter *padapter)
> > if (tmp8_a != (tmp8|BIT(2)))
> > goto exit_fail;
> >
> > - tmp32 = r8712_read32(padapter, TCR);
> > + r8712_read32(padapter, TCR);
>
> I wonder if we actually need to call r8712_read32() here? It's not
> clear. The changelog should say one way or the other. Maybe something
> like "I left a call to r8712_read32(padapter, TCR) because I didn't know
> if it had side effects". When you note down questions you have in the
> changelog that helps reviewers.
sure. i will resend it with modified commit log.
r8712_read32() is ultimately calling usb_read32() which is again calling r8712_usbctrl_vendorreq().
this r8712_usbctrl_vendorreq() is communicating through the usb bus and is sending and receiving the control msg.
that is why i didnot remove it.
>
> > --- a/drivers/staging/rtl8712/rtl871x_pwrctrl.c
> > +++ b/drivers/staging/rtl8712/rtl871x_pwrctrl.c
> > @@ -156,11 +156,9 @@ static void rpwm_workitem_callback(struct work_struct *work)
> > struct pwrctrl_priv, rpwm_workitem);
> > struct _adapter *padapter = container_of(pwrpriv,
> > struct _adapter, pwrctrlpriv);
> > - u8 cpwm = pwrpriv->cpwm;
> > -
> > if (pwrpriv->cpwm != pwrpriv->rpwm) {
> > _enter_pwrlock(&pwrpriv->lock);
> > - cpwm = r8712_read8(padapter, SDIO_HCPWM);
> > + r8712_read8(padapter, SDIO_HCPWM);
>
> Same here.
same reason for r8712_read8().
thanks
sudip
>
> > pwrpriv->rpwm_retry = 1;
> > r8712_set_rpwm(padapter, pwrpriv->rpwm);
> > up(&pwrpriv->lock);
>
> regards,
> dan carpenter
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