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

Re: [PATCH 24/61] net/9p: Prefer IS_ERR_OR_NULL over manual NULL check

From: Christian Schoenebeck <linux_oss@crudebyte.com>
Date: 2026-03-10 13:47:23
Also in: amd-gfx, bpf, ceph-devel, cocci, dm-devel, dri-devel, gfs2, intel-gfx, 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

On Tuesday, 10 March 2026 12:48:50 CET Philipp Hahn wrote:
Prefer using IS_ERR_OR_NULL() over using IS_ERR() and a manual NULL
check.

Change generated with coccinelle.

To: Eric Van Hensbergen <ericvh@kernel.org>
To: Latchesar Ionkov <lucho@ionkov.net>
To: Dominique Martinet <asmadeus@codewreck.org>
To: Christian Schoenebeck <linux_oss@crudebyte.com>
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: v9fs@lists.linux.dev
Cc: netdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Philipp Hahn <redacted>
---
 include/net/9p/client.h | 2 +-
 net/9p/trans_rdma.c     | 8 ++++----
 2 files changed, 5 insertions(+), 5 deletions(-)
Reviewed-by: Christian Schoenebeck <linux_oss@crudebyte.com>
 
quoted hunk ↗ jump to hunk
diff --git a/include/net/9p/client.h b/include/net/9p/client.h
index
838a94218b593f3fb19e6827c472753380193461..4bde6bd716f323c819745e64c7aac0dea
7beb72f 100644 --- a/include/net/9p/client.h
+++ b/include/net/9p/client.h
@@ -364,7 +364,7 @@ static inline struct p9_fid *p9_fid_get(struct p9_fid
*fid)

 static inline int p9_fid_put(struct p9_fid *fid)
 {
-	if (!fid || IS_ERR(fid))
+	if (IS_ERR_OR_NULL(fid))
 		return 0;

 	if (tracepoint_enabled(9p_fid_ref))
diff --git a/net/9p/trans_rdma.c b/net/9p/trans_rdma.c
index
aa5bd74d333f3b5e6fd1e4344d26bc0201ff7f7f..60461344b536bcb6e94112aace75a88b6
a99ad86 100644 --- a/net/9p/trans_rdma.c
+++ b/net/9p/trans_rdma.c
@@ -252,16 +252,16 @@ static void rdma_destroy_trans(struct p9_trans_rdma
*rdma) if (!rdma)
 		return;

-	if (rdma->qp && !IS_ERR(rdma->qp))
+	if (!IS_ERR_OR_NULL(rdma->qp))
 		ib_destroy_qp(rdma->qp);

-	if (rdma->pd && !IS_ERR(rdma->pd))
+	if (!IS_ERR_OR_NULL(rdma->pd))
 		ib_dealloc_pd(rdma->pd);

-	if (rdma->cq && !IS_ERR(rdma->cq))
+	if (!IS_ERR_OR_NULL(rdma->cq))
 		ib_free_cq(rdma->cq);

-	if (rdma->cm_id && !IS_ERR(rdma->cm_id))
+	if (!IS_ERR_OR_NULL(rdma->cm_id))
 		rdma_destroy_id(rdma->cm_id);

 	kfree(rdma);
  
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