From: Hui Su <sh_def@163.com>
To: davem@davemloft.net, kuba@kernel.org, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH] net/atm: use list_is_singular() in br2684_setfilt()
Date: Tue, 27 Oct 2020 00:57:00 +0800 [thread overview]
Message-ID: <20201026165700.GA8218@rlk> (raw)
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_def@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 */
brvcc = NULL;
else
brvcc = list_entry_brvcc(brdev->brvccs.next);
--
2.25.1
next reply other threads:[~2020-10-26 16:57 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-26 16:57 Hui Su [this message]
2020-10-28 0:47 ` [PATCH] net/atm: use list_is_singular() in br2684_setfilt() Jakub Kicinski
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