On Tue, 27 Oct 2020 00:57:00 +0800 Hui Su wrote: > list_is_singular() can tell whether a list has just one entry. > So we use list_is_singular（) here. > > Signed-off-by: Hui Su <sh_...@163.com> > --- > net/atm/br2684.c | 3 +-- > 1 file changed, 1 insertion(+), 2 deletions(-) > > diff --git a/net/atm/br2684.c b/net/atm/br2684.c > index 3e17a5ecaa94..398f7e086cf4 100644 > --- a/net/atm/br2684.c > +++ b/net/atm/br2684.c > @@ -372,8 +372,7 @@ static int br2684_setfilt(struct atm_vcc *atmvcc, void > __user * arg) > struct br2684_dev *brdev; > read_lock(&devs_lock); > brdev = BRPRIV(br2684_find_dev(&fs.ifspec)); > - if (brdev == NULL || list_empty(&brdev->brvccs) || > - brdev->brvccs.next != brdev->brvccs.prev) /* >1 VCC */ > + if (brdev == NULL || !list_is_singular(&brdev->brvccs)) /* >1 > VCC */
You can drop the /* >1 VCC */ comment now, the code is clear enough > brvcc = NULL; > else > brvcc = list_entry_brvcc(brdev->brvccs.next);
