On Fri, May 10, 2019 at 10:53:08PM +0530, Hariprasad Kelam wrote:
> On Fri, May 10, 2019 at 01:57:54PM +0300, Dan Carpenter wrote:
> > On Fri, May 10, 2019 at 08:09:00AM +0530, Hariprasad Kelam wrote:
> > > diff --git a/drivers/staging/wlan-ng/cfg80211.c b/drivers/staging/wlan-ng/cfg80211.c
> > > index 8a862f7..5dad5ac 100644
> > > --- a/drivers/staging/wlan-ng/cfg80211.c
> > > +++ b/drivers/staging/wlan-ng/cfg80211.c
> > > @@ -231,17 +231,12 @@ static int prism2_set_default_key(struct wiphy *wiphy, struct net_device *dev,
> > > {
> > > struct wlandevice *wlandev = dev->ml_priv;
> > >
> > > - int err = 0;
> > > - int result = 0;
> > > -
> > > - result = prism2_domibset_uint32(wlandev,
> > > - DIDMIB_DOT11SMT_PRIVACYTABLE_WEPDEFAULTKEYID,
> > > - key_index);
> > > -
> > > - if (result)
> > > - err = -EFAULT;
> > > -
> > > - return err;
> > > + if (prism2_domibset_uint32(wlandev,
> > > + DIDMIB_DOT11SMT_PRIVACYTABLE_WEPDEFAULTKEYID,
> > > + key_index))
> > > + return -EFAULT;
> > > + else
> > > + return 0;
> >
> > We should just preserve the error codes from prism2_domibset_uint32().
> >
> > return prism2_domibset_uint32(dev->ml_priv,
> > DIDMIB_DOT11SMT_PRIVACYTABLE_WEPDEFAULTKEYID,
> > key_index);
> >
> prism2_domibset_uint32 function can return -ENODEV,-EPERM,-EBUSY if
> fail case.
>
> If we observe the pattern of calling this function,we can find
>
> "return -EFAULT on failure and 0 on success".
>
> Due to this we can not collect return status directly.
Yes, I know this code is full of nonsense.
It shouldn't just always return -EFAULT, it should preserve the correct
error code. This is only called from rdev_set_default_key() if you want
to check the caller.
regards,
dan carpenter
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