RE: [Intel-wired-lan] [PATCH 24/61] net/9p: Prefer IS_ERR_OR_NULL over manual NULL check

[Loktionov, Aleksandr]

> -----Original Message-----
> From: Intel-wired-lan <intel-wired-lan-bounces@xxxxxxxxxx> On Behalf
> Of Philipp Hahn
> Sent: Tuesday, March 10, 2026 12:49 PM
> To: amd-gfx@xxxxxxxxxxxxxxxxxxxxx; apparmor@xxxxxxxxxxxxxxxx;
> bpf@xxxxxxxxxxxxxxx; ceph-devel@xxxxxxxxxxxxxxx; cocci@xxxxxxxx; dm-
> devel@xxxxxxxxxxxxxxx; dri-devel@xxxxxxxxxxxxxxxxxxxxx;
> gfs2@xxxxxxxxxxxxxxx; intel-gfx@xxxxxxxxxxxxxxxxxxxxx; intel-wired-
> lan@xxxxxxxxxxxxxxxx; iommu@xxxxxxxxxxxxxxx; kvm@xxxxxxxxxxxxxxx;
> linux-arm-kernel@xxxxxxxxxxxxxxxxxxx; linux-block@xxxxxxxxxxxxxxx;
> linux-bluetooth@xxxxxxxxxxxxxxx; linux-btrfs@xxxxxxxxxxxxxxx; linux-
> cifs@xxxxxxxxxxxxxxx; linux-clk@xxxxxxxxxxxxxxx; linux-
> erofs@xxxxxxxxxxxxxxxx; linux-ext4@xxxxxxxxxxxxxxx; linux-
> fsdevel@xxxxxxxxxxxxxxx; linux-gpio@xxxxxxxxxxxxxxx; linux-
> hyperv@xxxxxxxxxxxxxxx; linux-input@xxxxxxxxxxxxxxx; linux-
> kernel@xxxxxxxxxxxxxxx; linux-leds@xxxxxxxxxxxxxxx; linux-
> media@xxxxxxxxxxxxxxx; linux-mips@xxxxxxxxxxxxxxx; linux-mm@xxxxxxxxx;
> linux-modules@xxxxxxxxxxxxxxx; linux-mtd@xxxxxxxxxxxxxxxxxxx; linux-
> nfs@xxxxxxxxxxxxxxx; linux-omap@xxxxxxxxxxxxxxx; linux-
> phy@xxxxxxxxxxxxxxxxxxx; linux-pm@xxxxxxxxxxxxxxx; linux-
> rockchip@xxxxxxxxxxxxxxxxxxx; linux-s390@xxxxxxxxxxxxxxx; linux-
> scsi@xxxxxxxxxxxxxxx; linux-sctp@xxxxxxxxxxxxxxx; linux-security-
> module@xxxxxxxxxxxxxxx; linux-sh@xxxxxxxxxxxxxxx; linux-
> sound@xxxxxxxxxxxxxxx; linux-stm32@xxxxxxxxxxxxxxxxxxxxxxxxxxxx;
> linux-trace-kernel@xxxxxxxxxxxxxxx; linux-usb@xxxxxxxxxxxxxxx; linux-
> wireless@xxxxxxxxxxxxxxx; netdev@xxxxxxxxxxxxxxx;
> ntfs3@xxxxxxxxxxxxxxx; samba-technical@xxxxxxxxxxxxxxx; sched-
> ext@xxxxxxxxxxxxxxx; target-devel@xxxxxxxxxxxxxxx; tipc-
> discussion@xxxxxxxxxxxxxxxxxxxxx; v9fs@xxxxxxxxxxxxxxx; Philipp Hahn
> <phahn-oss@xxxxxx>
> Cc: Eric Van Hensbergen <ericvh@xxxxxxxxxx>; Latchesar Ionkov
> <lucho@xxxxxxxxxx>; Dominique Martinet <asmadeus@xxxxxxxxxxxxx>;
> Christian Schoenebeck <linux_oss@xxxxxxxxxxxxx>; David S. Miller
> <davem@xxxxxxxxxxxxx>; Eric Dumazet <edumazet@xxxxxxxxxx>; Jakub
> Kicinski <kuba@xxxxxxxxxx>; Paolo Abeni <pabeni@xxxxxxxxxx>; Simon
> Horman <horms@xxxxxxxxxx>
> Subject: [Intel-wired-lan] [PATCH 24/61] net/9p: Prefer IS_ERR_OR_NULL
> over manual NULL check
> 
> Prefer using IS_ERR_OR_NULL() over using IS_ERR() and a manual NULL
> check.
> 
> Change generated with coccinelle.
> 
> To: Eric Van Hensbergen <ericvh@xxxxxxxxxx>
> To: Latchesar Ionkov <lucho@xxxxxxxxxx>
> To: Dominique Martinet <asmadeus@xxxxxxxxxxxxx>
> To: Christian Schoenebeck <linux_oss@xxxxxxxxxxxxx>
> To: "David S. Miller" <davem@xxxxxxxxxxxxx>
> To: Eric Dumazet <edumazet@xxxxxxxxxx>
> To: Jakub Kicinski <kuba@xxxxxxxxxx>
> To: Paolo Abeni <pabeni@xxxxxxxxxx>
> To: Simon Horman <horms@xxxxxxxxxx>
> Cc: v9fs@xxxxxxxxxxxxxxx
> Cc: netdev@xxxxxxxxxxxxxxx
> Cc: linux-kernel@xxxxxxxxxxxxxxx
> Signed-off-by: Philipp Hahn <phahn-oss@xxxxxx>
> ---
>  include/net/9p/client.h | 2 +-
>  net/9p/trans_rdma.c     | 8 ++++----
>  2 files changed, 5 insertions(+), 5 deletions(-)
> 
> diff --git a/include/net/9p/client.h b/include/net/9p/client.h index
> 838a94218b593f3fb19e6827c472753380193461..4bde6bd716f323c819745e64c7aa
> c0dea7beb72f 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..60461344b536bcb6e94112aace75
> a88b6a99ad86 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);
> 
> --
> 2.43.0

Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@xxxxxxxxx>