Thread (124 messages) 124 messages, 35 authors, 2026-04-16

[PATCH 28/61] net/sched: Prefer IS_ERR_OR_NULL over manual NULL check

From: Philipp Hahn <hidden>
Date: 2026-03-10 11:55:50
Also in: amd-gfx, bpf, ceph-devel, dm-devel, dri-devel, gfs2, intel-wired-lan, kvm, linux-block, linux-bluetooth, linux-btrfs, linux-cifs, linux-clk, linux-ext4, linux-fsdevel, linux-gpio, linux-hyperv, linux-input, linux-iommu, linux-leds, linux-media, linux-mips, linux-mm, linux-modules, linux-nfs, linux-omap, linux-phy, linux-pm, linux-rockchip, linux-s390, linux-scsi, linux-sctp, linux-security-module, linux-sh, linux-sound, linux-trace-kernel, linux-usb, linux-wireless, lkml, ntfs3, sched-ext, target-devel, v9fs
Subsystem: networking [general], tc subsystem, the rest · Maintainers: "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Jamal Hadi Salim, Jiri Pirko, Linus Torvalds

Prefer using IS_ERR_OR_NULL() over using IS_ERR() and a manual NULL
check.

Change generated with coccinelle.

To: Jamal Hadi Salim <jhs@mojatatu.com>
To: Jiri Pirko <jiri@resnulli.us>
To: "David S. Miller" <davem@davemloft.net>
To: Eric Dumazet <edumazet@google.com>
To: Jakub Kicinski <kuba@kernel.org>
To: Paolo Abeni <pabeni@redhat.com>
To: Simon Horman <horms@kernel.org>
Cc: netdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Philipp Hahn <redacted>
---
 net/sched/cls_api.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
index 4829c27446e3369ad2ae9b3fcb285eca47d59933..4208225e7a4acaf0c331096ebf941f68cc2ed992 100644
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c
@@ -2444,7 +2444,7 @@ static int tc_new_tfilter(struct sk_buff *skb, struct nlmsghdr *n,
 		tcf_chain_tp_delete_empty(chain, tp, rtnl_held, NULL);
 errout_tp:
 	if (chain) {
-		if (tp && !IS_ERR(tp))
+		if (!IS_ERR_OR_NULL(tp))
 			tcf_proto_put(tp, rtnl_held, NULL);
 		if (!tp_created)
 			tcf_chain_put(chain);
@@ -2612,7 +2612,7 @@ static int tc_del_tfilter(struct sk_buff *skb, struct nlmsghdr *n,
 
 errout:
 	if (chain) {
-		if (tp && !IS_ERR(tp))
+		if (!IS_ERR_OR_NULL(tp))
 			tcf_proto_put(tp, rtnl_held, NULL);
 		tcf_chain_put(chain);
 	}
@@ -2741,7 +2741,7 @@ static int tc_get_tfilter(struct sk_buff *skb, struct nlmsghdr *n,
 	tfilter_put(tp, fh);
 errout:
 	if (chain) {
-		if (tp && !IS_ERR(tp))
+		if (!IS_ERR_OR_NULL(tp))
 			tcf_proto_put(tp, rtnl_held, NULL);
 		tcf_chain_put(chain);
 	}
-- 
2.43.0
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