* Re: [PATCH v3] module: print version for external modules in print_modules()
From: Yafang Shao @ 2026-03-10 13:11 UTC (permalink / raw)
To: Christoph Hellwig
Cc: atomlin, da.gomez, linux-modules, mcgrof, petr.pavlu,
samitolvanen
In-Reply-To: <abAXjc6OihRcdoAA@infradead.org>
On Tue, Mar 10, 2026 at 9:07 PM Christoph Hellwig <hch@infradead.org> wrote:
>
> On Tue, Mar 10, 2026 at 09:04:14PM +0800, Yafang Shao wrote:
> >
> >
> > > Then don't run extetrnal modules, which are not a first part citizen.
> > > Get your changeas upstream instead of just leeching the upstream
> > > developers work.
> >
> > That doesn't make any sense.
> > Could you please explain the rationale behind introducing
> > EXPORT_SYMBOL_GPL() and TAINT_OOT_MODULE ?
>
> Your straw man doesn't make any sense to me.
This solution has been approved by all MODULE SUPPORT maintainers. Are
you on the maintainer list?
Please help keep our discussions polite.
--
Regards
Yafang
^ permalink raw reply
* Re: [PATCH] kthread: remove kthread_exit()
From: Christoph Hellwig @ 2026-03-10 13:11 UTC (permalink / raw)
To: Linus Torvalds
Cc: Christoph Hellwig, Christian Brauner, linux-kernel, linux-modules,
linux-nfs, bpf, linux-kselftest, kunit-dev, Luis Chamberlain,
Petr Pavlu, Daniel Gomez, Sami Tolvanen, Aaron Tomlin,
Chuck Lever, Jeff Layton, NeilBrown, Olga Kornievskaia, Dai Ngo,
Tom Talpey, Trond Myklebust, Anna Schumaker, Alexei Starovoitov,
Daniel Borkmann, John Fastabend, Andrii Nakryiko,
Martin KaFai Lau, Eduard Zingerman, Song Liu, Yonghong Song,
KP Singh, Stanislav Fomichev, Hao Luo, Jiri Olsa, Brendan Higgins,
David Gow, Rae Moar, Christian Loehle
In-Reply-To: <CAHk-=wi_kwtWt4Swi=k2zJTnStoBaw3vneHz8ccVNDyVD1nvWg@mail.gmail.com>
On Mon, Mar 09, 2026 at 09:37:26AM -0700, Linus Torvalds wrote:
> On Mon, 9 Mar 2026 at 08:43, Christoph Hellwig <hch@infradead.org> wrote:
> >
> > Because it can't f&*^ up the state of random tasks.
>
> Christoph, you make no sense.
Thanks, I always appreciated rational and detailed answers.
>
> "do_exit()" cannot mess up random tasks. It can only exit the
> *current* task. The task that is running right now in that module.
Yes. And random code should not be able to end arbitrary tasks.
> So what is the actual problem? No more random rants. Explain yourself
> without making wild handwaving gestures.
Wow, you're a bit aggressive, aren't you? Maybe take your meds in the
morning to stay a bit calmer. As said before I don't think allowing
random code (and module is a proxy for that) do exit a task. They
really should not be exiting random kthreads either, but certainly
not more than that.
> Now, there are real exports in this area that are actually strange and
> should be removed: for some historical reason we export 'free_task()'
> which makes no sense to me at all (but probably did at some point).
>
> Now *that* is a strange export that can mess up another task in major ways.
No argument about that, but that's not the point here.
^ permalink raw reply
* Re: [PATCH v3] module: print version for external modules in print_modules()
From: Christoph Hellwig @ 2026-03-10 13:07 UTC (permalink / raw)
To: Yafang Shao
Cc: hch, atomlin, da.gomez, linux-modules, mcgrof, petr.pavlu,
samitolvanen
In-Reply-To: <4215f061-488b-4c2b-98b3-45db4aabed5e@gmail.com>
On Tue, Mar 10, 2026 at 09:04:14PM +0800, Yafang Shao wrote:
>
>
> > Then don't run extetrnal modules, which are not a first part citizen.
> > Get your changeas upstream instead of just leeching the upstream
> > developers work.
>
> That doesn't make any sense.
> Could you please explain the rationale behind introducing
> EXPORT_SYMBOL_GPL() and TAINT_OOT_MODULE ?
Your straw man doesn't make any sense to me.
^ permalink raw reply
* Re: [PATCH v3] module: print version for external modules in print_modules()
From: Yafang Shao @ 2026-03-10 13:04 UTC (permalink / raw)
To: hch
Cc: atomlin, da.gomez, laoar.shao, linux-modules, mcgrof, petr.pavlu,
samitolvanen
In-Reply-To: <aa-6wILF90Y4ndnd@infradead.org>
> Then don't run extetrnal modules, which are not a first part citizen.
> Get your changeas upstream instead of just leeching the upstream
> developers work.
That doesn't make any sense.
Could you please explain the rationale behind introducing
EXPORT_SYMBOL_GPL() and TAINT_OOT_MODULE ?
^ permalink raw reply
* Re: [PATCH 46/61] vfio: Prefer IS_ERR_OR_NULL over manual NULL check
From: Pranjal Shrivastava @ 2026-03-10 12:53 UTC (permalink / raw)
To: Philipp Hahn
Cc: amd-gfx, apparmor, bpf, ceph-devel, cocci, dm-devel, dri-devel,
gfs2, intel-gfx, intel-wired-lan, iommu, kvm, linux-arm-kernel,
linux-block, linux-bluetooth, linux-btrfs, linux-cifs, linux-clk,
linux-erofs, linux-ext4, linux-fsdevel, linux-gpio, linux-hyperv,
linux-input, linux-kernel, linux-leds, linux-media, linux-mips,
linux-mm, linux-modules, linux-mtd, linux-nfs, linux-omap,
linux-phy, linux-pm, linux-rockchip, linux-s390, linux-scsi,
linux-sctp, linux-security-module, linux-sh, linux-sound,
linux-stm32, linux-trace-kernel, linux-usb, linux-wireless,
netdev, ntfs3, samba-technical, sched-ext, target-devel,
tipc-discussion, v9fs, Alex Williamson
In-Reply-To: <20260310-b4-is_err_or_null-v1-46-bd63b656022d@avm.de>
On Tue, Mar 10, 2026 at 12:49:12PM +0100, Philipp Hahn wrote:
> Prefer using IS_ERR_OR_NULL() over using IS_ERR() and a manual NULL
> check.
>
> Change generated with coccinelle.
>
> To: Alex Williamson <alex@shazbot.org>
> Cc: kvm@vger.kernel.org
> Cc: linux-kernel@vger.kernel.org
> Signed-off-by: Philipp Hahn <phahn-oss@avm.de>
> ---
> drivers/vfio/vfio_main.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/vfio/vfio_main.c b/drivers/vfio/vfio_main.c
> index 742477546b15d4dbaf9ebcfb2e67627db71521e0..d71922dfde5885967398deddec3e9e04b05adfec 100644
> --- a/drivers/vfio/vfio_main.c
> +++ b/drivers/vfio/vfio_main.c
> @@ -923,7 +923,7 @@ vfio_ioctl_device_feature_mig_device_state(struct vfio_device *device,
>
> /* Handle the VFIO_DEVICE_FEATURE_SET */
> filp = device->mig_ops->migration_set_state(device, mig.device_state);
> - if (IS_ERR(filp) || !filp)
> + if (IS_ERR_OR_NULL(filp))
> goto out_copy;
>
> return vfio_ioct_mig_return_fd(filp, arg, &mig);
>
Reviewed-by: Pranjal Shrivastava <praan@google.com>
The cleanup alone looks fine, but I'm not sure if the maintainers would
be happy about the tree-wide spam, since each patch might go through a
different tree. I'd wait for Alex's preference/ack on that.
Thanks,
Praan
^ permalink raw reply
* Re: [PATCH 57/61] reset: Prefer IS_ERR_OR_NULL over manual NULL check
From: Philipp Zabel @ 2026-03-10 12:43 UTC (permalink / raw)
To: Philipp Hahn, amd-gfx, apparmor, bpf, ceph-devel, cocci, dm-devel,
dri-devel, gfs2, intel-gfx, intel-wired-lan, iommu, kvm,
linux-arm-kernel, linux-block, linux-bluetooth, linux-btrfs,
linux-cifs, linux-clk, linux-erofs, linux-ext4, linux-fsdevel,
linux-gpio, linux-hyperv, linux-input, linux-kernel, linux-leds,
linux-media, linux-mips, linux-mm, linux-modules, linux-mtd,
linux-nfs, linux-omap, linux-phy, linux-pm, linux-rockchip,
linux-s390, linux-scsi, linux-sctp, linux-security-module,
linux-sh, linux-sound, linux-stm32, linux-trace-kernel, linux-usb,
linux-wireless, netdev, ntfs3, samba-technical, sched-ext,
target-devel, tipc-discussion, v9fs
In-Reply-To: <20260310-b4-is_err_or_null-v1-57-bd63b656022d@avm.de>
Hi Philipp,
On Di, 2026-03-10 at 12:49 +0100, Philipp Hahn wrote:
> Prefer using IS_ERR_OR_NULL() over using IS_ERR() and a manual NULL
> check.
>
> Semantich change: Previously the code only printed the warning on error,
> but not when the pointer was NULL. Now the warning is printed in both
> cases!
No, rstc == NULL is valid (for optional reset controls) and must not
throw a warning.
regards
Philipp
^ permalink raw reply
* Re: [PATCH 18/61] sound: Prefer IS_ERR_OR_NULL over manual NULL check
From: Mark Brown @ 2026-03-10 12:28 UTC (permalink / raw)
To: Philipp Hahn
Cc: amd-gfx, apparmor, bpf, ceph-devel, cocci, dm-devel, dri-devel,
gfs2, intel-gfx, intel-wired-lan, iommu, kvm, linux-arm-kernel,
linux-block, linux-bluetooth, linux-btrfs, linux-cifs, linux-clk,
linux-erofs, linux-ext4, linux-fsdevel, linux-gpio, linux-hyperv,
linux-input, linux-kernel, linux-leds, linux-media, linux-mips,
linux-mm, linux-modules, linux-mtd, linux-nfs, linux-omap,
linux-phy, linux-pm, linux-rockchip, linux-s390, linux-scsi,
linux-sctp, linux-security-module, linux-sh, linux-sound,
linux-stm32, linux-trace-kernel, linux-usb, linux-wireless,
netdev, ntfs3, samba-technical, sched-ext, target-devel,
tipc-discussion, v9fs, Sylwester Nawrocki, Liam Girdwood,
Jaroslav Kysela, Takashi Iwai, Max Filippov
In-Reply-To: <20260310-b4-is_err_or_null-v1-18-bd63b656022d@avm.de>
[-- Attachment #1: Type: text/plain, Size: 664 bytes --]
On Tue, Mar 10, 2026 at 12:48:44PM +0100, Philipp Hahn wrote:
> Prefer using IS_ERR_OR_NULL() over using IS_ERR() and a manual NULL
> check.
I can't tell what the dependency story is here, it looks like there's
none? If that's the case you shouldn't send things as a single series,
send separate patches to the various subsystems.
Please submit patches using subject lines reflecting the style for the
subsystem, this makes it easier for people to identify relevant patches.
Look at what existing commits in the area you're changing are doing and
make sure your subject lines visually resemble what they're doing.
There's no need to resubmit to fix this alone.
[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 488 bytes --]
^ permalink raw reply
* Re: [PATCH 30/61] net/sunrpc: Prefer IS_ERR_OR_NULL over manual NULL check
From: Jeff Layton @ 2026-03-10 12:23 UTC (permalink / raw)
To: Philipp Hahn, amd-gfx, apparmor, bpf, ceph-devel, cocci, dm-devel,
dri-devel, gfs2, intel-gfx, intel-wired-lan, iommu, kvm,
linux-arm-kernel, linux-block, linux-bluetooth, linux-btrfs,
linux-cifs, linux-clk, linux-erofs, linux-ext4, linux-fsdevel,
linux-gpio, linux-hyperv, linux-input, linux-kernel, linux-leds,
linux-media, linux-mips, linux-mm, linux-modules, linux-mtd,
linux-nfs, linux-omap, linux-phy, linux-pm, linux-rockchip,
linux-s390, linux-scsi, linux-sctp, linux-security-module,
linux-sh, linux-sound, linux-stm32, linux-trace-kernel, linux-usb,
linux-wireless, netdev, ntfs3, samba-technical, sched-ext,
target-devel, tipc-discussion, v9fs
Cc: Trond Myklebust, Anna Schumaker, Chuck Lever, NeilBrown,
Olga Kornievskaia, Dai Ngo, Tom Talpey, David S. Miller,
Eric Dumazet, Jakub Kicinski, Paolo Abeni, Simon Horman
In-Reply-To: <20260310-b4-is_err_or_null-v1-30-bd63b656022d@avm.de>
On Tue, 2026-03-10 at 12:48 +0100, Philipp Hahn wrote:
> Prefer using IS_ERR_OR_NULL() over using IS_ERR() and a manual NULL
> check.
>
> Change generated with coccinelle.
>
> To: Trond Myklebust <trondmy@kernel.org>
> To: Anna Schumaker <anna@kernel.org>
> To: Chuck Lever <chuck.lever@oracle.com>
> To: Jeff Layton <jlayton@kernel.org>
> To: NeilBrown <neil@brown.name>
> To: Olga Kornievskaia <okorniev@redhat.com>
> To: Dai Ngo <Dai.Ngo@oracle.com>
> To: Tom Talpey <tom@talpey.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: linux-nfs@vger.kernel.org
> Cc: netdev@vger.kernel.org
> Cc: linux-kernel@vger.kernel.org
> Signed-off-by: Philipp Hahn <phahn-oss@avm.de>
> ---
> net/sunrpc/xprtrdma/svc_rdma_transport.c | 12 ++++++------
> 1 file changed, 6 insertions(+), 6 deletions(-)
>
> diff --git a/net/sunrpc/xprtrdma/svc_rdma_transport.c b/net/sunrpc/xprtrdma/svc_rdma_transport.c
> index 9b623849723ed0eb74b827881c6f32d3434c891b..b4d03e59a8202f20360cff1e2e79b1e325396517 100644
> --- a/net/sunrpc/xprtrdma/svc_rdma_transport.c
> +++ b/net/sunrpc/xprtrdma/svc_rdma_transport.c
> @@ -578,7 +578,7 @@ static struct svc_xprt *svc_rdma_accept(struct svc_xprt *xprt)
> errout:
> /* Take a reference in case the DTO handler runs */
> svc_xprt_get(&newxprt->sc_xprt);
> - if (newxprt->sc_qp && !IS_ERR(newxprt->sc_qp))
> + if (!IS_ERR_OR_NULL(newxprt->sc_qp))
> ib_destroy_qp(newxprt->sc_qp);
> rdma_destroy_id(newxprt->sc_cm_id);
> rpcrdma_rn_unregister(dev, &newxprt->sc_rn);
> @@ -608,7 +608,7 @@ static void svc_rdma_free(struct svc_xprt *xprt)
> might_sleep();
>
> /* This blocks until the Completion Queues are empty */
> - if (rdma->sc_qp && !IS_ERR(rdma->sc_qp))
> + if (!IS_ERR_OR_NULL(rdma->sc_qp))
> ib_drain_qp(rdma->sc_qp);
> flush_workqueue(svcrdma_wq);
>
> @@ -619,16 +619,16 @@ static void svc_rdma_free(struct svc_xprt *xprt)
> svc_rdma_recv_ctxts_destroy(rdma);
>
> /* Destroy the QP if present (not a listener) */
> - if (rdma->sc_qp && !IS_ERR(rdma->sc_qp))
> + if (!IS_ERR_OR_NULL(rdma->sc_qp))
> ib_destroy_qp(rdma->sc_qp);
>
> - if (rdma->sc_sq_cq && !IS_ERR(rdma->sc_sq_cq))
> + if (!IS_ERR_OR_NULL(rdma->sc_sq_cq))
> ib_free_cq(rdma->sc_sq_cq);
>
> - if (rdma->sc_rq_cq && !IS_ERR(rdma->sc_rq_cq))
> + if (!IS_ERR_OR_NULL(rdma->sc_rq_cq))
> ib_free_cq(rdma->sc_rq_cq);
>
> - if (rdma->sc_pd && !IS_ERR(rdma->sc_pd))
> + if (!IS_ERR_OR_NULL(rdma->sc_pd))
> ib_dealloc_pd(rdma->sc_pd);
>
> /* Destroy the CM ID */
Reviewed-by: Jeff Layton <jlayton@kernel.org>
^ permalink raw reply
* Re: [PATCH 61/61] file: Drop unlikely() around IS_ERR_OR_NULL()
From: Jeff Layton @ 2026-03-10 12:23 UTC (permalink / raw)
To: Philipp Hahn, amd-gfx, apparmor, bpf, ceph-devel, cocci, dm-devel,
dri-devel, gfs2, intel-gfx, intel-wired-lan, iommu, kvm,
linux-arm-kernel, linux-block, linux-bluetooth, linux-btrfs,
linux-cifs, linux-clk, linux-erofs, linux-ext4, linux-fsdevel,
linux-gpio, linux-hyperv, linux-input, linux-kernel, linux-leds,
linux-media, linux-mips, linux-mm, linux-modules, linux-mtd,
linux-nfs, linux-omap, linux-phy, linux-pm, linux-rockchip,
linux-s390, linux-scsi, linux-sctp, linux-security-module,
linux-sh, linux-sound, linux-stm32, linux-trace-kernel, linux-usb,
linux-wireless, netdev, ntfs3, samba-technical, sched-ext,
target-devel, tipc-discussion, v9fs
Cc: Christian Brauner
In-Reply-To: <20260310-b4-is_err_or_null-v1-61-bd63b656022d@avm.de>
On Tue, 2026-03-10 at 12:49 +0100, Philipp Hahn wrote:
> IS_ERR_OR_NULL() already uses likely(!ptr) internally. checkpatch does
> not like nesting it:
> > WARNING: nested (un)?likely() calls, IS_ERR_OR_NULL already uses
> > unlikely() internally
> Remove the explicit use of unlikely().
>
> Change generated with coccinelle.
>
> To: Christian Brauner <brauner@kernel.org>
> To: Jeff Layton <jlayton@kernel.org>
> Cc: linux-kernel@vger.kernel.org
> Signed-off-by: Philipp Hahn <phahn-oss@avm.de>
> ---
> include/linux/file.h | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/include/linux/file.h b/include/linux/file.h
> index 27484b444d3155685cdbb89f546f26ef66e3e1b4..007b9b9d365a052c1c056e12571eaf4f8ef5a45c 100644
> --- a/include/linux/file.h
> +++ b/include/linux/file.h
> @@ -163,7 +163,7 @@ static inline void class_fd_prepare_destructor(const struct fd_prepare *fdf)
> {
> if (unlikely(fdf->__fd >= 0))
> put_unused_fd(fdf->__fd);
> - if (unlikely(!IS_ERR_OR_NULL(fdf->__file)))
> + if (!IS_ERR_OR_NULL(fdf->__file))
> fput(fdf->__file);
> }
>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
^ permalink raw reply
* Re: [PATCH 37/61] drm: Prefer IS_ERR_OR_NULL over manual NULL check
From: Christian König @ 2026-03-10 12:08 UTC (permalink / raw)
To: Philipp Hahn, amd-gfx, apparmor, bpf, ceph-devel, cocci, dm-devel,
dri-devel, gfs2, intel-gfx, intel-wired-lan, iommu, kvm,
linux-arm-kernel, linux-block, linux-bluetooth, linux-btrfs,
linux-cifs, linux-clk, linux-erofs, linux-ext4, linux-fsdevel,
linux-gpio, linux-hyperv, linux-input, linux-kernel, linux-leds,
linux-media, linux-mips, linux-mm, linux-modules, linux-mtd,
linux-nfs, linux-omap, linux-phy, linux-pm, linux-rockchip,
linux-s390, linux-scsi, linux-sctp, linux-security-module,
linux-sh, linux-sound, linux-stm32, linux-trace-kernel, linux-usb,
linux-wireless, netdev, ntfs3, samba-technical, sched-ext,
target-devel, tipc-discussion, v9fs
Cc: Andrzej Hajda, Neil Armstrong, Robert Foss, Laurent Pinchart,
Jonas Karlman, Jernej Skrabec, Maarten Lankhorst, Maxime Ripard,
Thomas Zimmermann, David Airlie, Simona Vetter, Zhenyu Wang,
Zhi Wang, Jani Nikula, Joonas Lahtinen, Rodrigo Vivi,
Tvrtko Ursulin, Alex Deucher, Sandy Huang, Heiko Stübner,
Andy Yan
In-Reply-To: <20260310-b4-is_err_or_null-v1-37-bd63b656022d@avm.de>
On 3/10/26 12:49, Philipp Hahn wrote:
> Prefer using IS_ERR_OR_NULL() over using IS_ERR() and a manual NULL
> check.
Looks like a reasonable cleanup but could be that driver maintainers want to take that through their individual branches to avoid conflicts.
Alternatively when the i915 and rockship maintainers say that they are fine with the change I'm happy to push this to drm-misc-next.
Regards,
Christian.
>
> Change generated with coccinelle.
>
> To: Andrzej Hajda <andrzej.hajda@intel.com>
> To: Neil Armstrong <neil.armstrong@linaro.org>
> To: Robert Foss <rfoss@kernel.org>
> To: Laurent Pinchart <Laurent.pinchart@ideasonboard.com>
> To: Jonas Karlman <jonas@kwiboo.se>
> To: Jernej Skrabec <jernej.skrabec@gmail.com>
> To: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
> To: Maxime Ripard <mripard@kernel.org>
> To: Thomas Zimmermann <tzimmermann@suse.de>
> To: David Airlie <airlied@gmail.com>
> To: Simona Vetter <simona@ffwll.ch>
> To: Zhenyu Wang <zhenyuw.linux@gmail.com>
> To: Zhi Wang <zhi.wang.linux@gmail.com>
> To: Jani Nikula <jani.nikula@linux.intel.com>
> To: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
> To: Rodrigo Vivi <rodrigo.vivi@intel.com>
> To: Tvrtko Ursulin <tursulin@ursulin.net>
> To: Alex Deucher <alexander.deucher@amd.com>
> To: "Christian König" <christian.koenig@amd.com>
> To: Sandy Huang <hjc@rock-chips.com>
> To: "Heiko Stübner" <heiko@sntech.de>
> To: Andy Yan <andy.yan@rock-chips.com>
> Cc: dri-devel@lists.freedesktop.org
> Cc: linux-kernel@vger.kernel.org
> Cc: intel-gfx@lists.freedesktop.org
> Cc: amd-gfx@lists.freedesktop.org
> Cc: linux-arm-kernel@lists.infradead.org
> Cc: linux-rockchip@lists.infradead.org
> Signed-off-by: Philipp Hahn <phahn-oss@avm.de>
> ---
> drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 2 +-
> drivers/gpu/drm/drm_sysfs.c | 2 +-
> drivers/gpu/drm/i915/gvt/scheduler.c | 4 ++--
> drivers/gpu/drm/radeon/radeon_test.c | 2 +-
> drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c | 2 +-
> 5 files changed, 6 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> index ee88c0e793b0416d20105a43448cb4037402e64b..64fa2bc8d28197147ee22b4f74134cc27dd9b32d 100644
> --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> @@ -3608,7 +3608,7 @@ void dw_hdmi_remove(struct dw_hdmi *hdmi)
> {
> drm_bridge_remove(&hdmi->bridge);
>
> - if (hdmi->audio && !IS_ERR(hdmi->audio))
> + if (!IS_ERR_OR_NULL(hdmi->audio))
> platform_device_unregister(hdmi->audio);
> if (!IS_ERR(hdmi->cec))
> platform_device_unregister(hdmi->cec);
> diff --git a/drivers/gpu/drm/drm_sysfs.c b/drivers/gpu/drm/drm_sysfs.c
> index ef4e923a872843339743d21e4877225855da921e..6748acb4163e8f5658c9201a0412b38862c7baab 100644
> --- a/drivers/gpu/drm/drm_sysfs.c
> +++ b/drivers/gpu/drm/drm_sysfs.c
> @@ -600,7 +600,7 @@ struct device *drm_sysfs_minor_alloc(struct drm_minor *minor)
> */
> int drm_class_device_register(struct device *dev)
> {
> - if (!drm_class || IS_ERR(drm_class))
> + if (IS_ERR_OR_NULL(drm_class))
> return -ENOENT;
>
> dev->class = drm_class;
> diff --git a/drivers/gpu/drm/i915/gvt/scheduler.c b/drivers/gpu/drm/i915/gvt/scheduler.c
> index 15fdd514ca836e84f4de95e3207ab45bb9243426..933ec5ffa1f1ebafd687996f167b982490702211 100644
> --- a/drivers/gpu/drm/i915/gvt/scheduler.c
> +++ b/drivers/gpu/drm/i915/gvt/scheduler.c
> @@ -675,10 +675,10 @@ static void release_shadow_batch_buffer(struct intel_vgpu_workload *workload)
> list_for_each_entry_safe(bb, pos, &workload->shadow_bb, list) {
> if (bb->obj) {
> i915_gem_object_lock(bb->obj, NULL);
> - if (bb->va && !IS_ERR(bb->va))
> + if (!IS_ERR_OR_NULL(bb->va))
> i915_gem_object_unpin_map(bb->obj);
>
> - if (bb->vma && !IS_ERR(bb->vma))
> + if (!IS_ERR_OR_NULL(bb->vma))
> i915_vma_unpin(bb->vma);
>
> i915_gem_object_unlock(bb->obj);
> diff --git a/drivers/gpu/drm/radeon/radeon_test.c b/drivers/gpu/drm/radeon/radeon_test.c
> index 0b459f7df23bae3eef7e36f4b5f35638fb6f4985..573284c4af60f12d7edec889260fc8a2e2b70420 100644
> --- a/drivers/gpu/drm/radeon/radeon_test.c
> +++ b/drivers/gpu/drm/radeon/radeon_test.c
> @@ -234,7 +234,7 @@ static void radeon_do_test_moves(struct radeon_device *rdev, int flag)
> radeon_bo_unreserve(gtt_obj[i]);
> radeon_bo_unref(>t_obj[i]);
> }
> - if (fence && !IS_ERR(fence))
> + if (!IS_ERR_OR_NULL(fence))
> radeon_fence_unref(&fence);
> break;
> }
> diff --git a/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c b/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c
> index 3547d91b25d317c6cad690da7d97a7e5436c0236..8a267de85da9c76c2e29b2ababf1218e400282c2 100644
> --- a/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c
> +++ b/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c
> @@ -1095,7 +1095,7 @@ static int dw_mipi_dsi_rockchip_host_detach(void *priv_data,
> struct device *second;
>
> second = dw_mipi_dsi_rockchip_find_second(dsi);
> - if (second && !IS_ERR(second))
> + if (!IS_ERR_OR_NULL(second))
> component_del(second, &dw_mipi_dsi_rockchip_ops);
>
> component_del(dsi->dev, &dw_mipi_dsi_rockchip_ops);
>
> --
> 2.43.0
>
^ permalink raw reply
* [PATCH 59/61] debugobjects: Drop likely() around !IS_ERR_OR_NULL()
From: Philipp Hahn @ 2026-03-10 11:49 UTC (permalink / raw)
To: amd-gfx, apparmor, bpf, ceph-devel, cocci, dm-devel, dri-devel,
gfs2, intel-gfx, intel-wired-lan, iommu, kvm, linux-arm-kernel,
linux-block, linux-bluetooth, linux-btrfs, linux-cifs, linux-clk,
linux-erofs, linux-ext4, linux-fsdevel, linux-gpio, linux-hyperv,
linux-input, linux-kernel, linux-leds, linux-media, linux-mips,
linux-mm, linux-modules, linux-mtd, linux-nfs, linux-omap,
linux-phy, linux-pm, linux-rockchip, linux-s390, linux-scsi,
linux-sctp, linux-security-module, linux-sh, linux-sound,
linux-stm32, linux-trace-kernel, linux-usb, linux-wireless,
netdev, ntfs3, samba-technical, sched-ext, target-devel,
tipc-discussion, v9fs, Philipp Hahn
Cc: Andrew Morton, Thomas Gleixner
In-Reply-To: <20260310-b4-is_err_or_null-v1-0-bd63b656022d@avm.de>
IS_ERR_OR_NULL() already uses likely(!ptr) internally. checkpatch does
not like nesting it:
> WARNING: nested (un)?likely() calls, IS_ERR_OR_NULL already uses
> unlikely() internally
Remove the explicit use of likely().
Change generated with coccinelle.
To: Andrew Morton <akpm@linux-foundation.org>
To: Thomas Gleixner <tglx@kernel.org>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Philipp Hahn <phahn-oss@avm.de>
---
lib/debugobjects.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lib/debugobjects.c b/lib/debugobjects.c
index 12f50de85b621a743a5b6f2638a308f6162c6fcc..12e2e42e6a31aa8706e859aca41b81c03889cffe 100644
--- a/lib/debugobjects.c
+++ b/lib/debugobjects.c
@@ -1024,7 +1024,7 @@ void debug_object_assert_init(void *addr, const struct debug_obj_descr *descr)
raw_spin_lock_irqsave(&db->lock, flags);
obj = lookup_object_or_alloc(addr, db, descr, false, true);
raw_spin_unlock_irqrestore(&db->lock, flags);
- if (likely(!IS_ERR_OR_NULL(obj)))
+ if (!IS_ERR_OR_NULL(obj))
return;
/* If NULL the allocation has hit OOM */
--
2.43.0
^ permalink raw reply related
* [PATCH 55/61] interconnect: Prefer IS_ERR_OR_NULL over manual NULL check
From: Philipp Hahn @ 2026-03-10 11:49 UTC (permalink / raw)
To: amd-gfx, apparmor, bpf, ceph-devel, cocci, dm-devel, dri-devel,
gfs2, intel-gfx, intel-wired-lan, iommu, kvm, linux-arm-kernel,
linux-block, linux-bluetooth, linux-btrfs, linux-cifs, linux-clk,
linux-erofs, linux-ext4, linux-fsdevel, linux-gpio, linux-hyperv,
linux-input, linux-kernel, linux-leds, linux-media, linux-mips,
linux-mm, linux-modules, linux-mtd, linux-nfs, linux-omap,
linux-phy, linux-pm, linux-rockchip, linux-s390, linux-scsi,
linux-sctp, linux-security-module, linux-sh, linux-sound,
linux-stm32, linux-trace-kernel, linux-usb, linux-wireless,
netdev, ntfs3, samba-technical, sched-ext, target-devel,
tipc-discussion, v9fs, Philipp Hahn
Cc: Georgi Djakov
In-Reply-To: <20260310-b4-is_err_or_null-v1-0-bd63b656022d@avm.de>
Prefer using IS_ERR_OR_NULL() over using IS_ERR() and a manual NULL
check.
Semantich change: Previously the code only printed the warning on error,
but not when the pointer was NULL. Now the warning is printed in both
cases!
Change found with coccinelle.
To: Georgi Djakov <djakov@kernel.org>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Philipp Hahn <phahn-oss@avm.de>
---
drivers/interconnect/core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/interconnect/core.c b/drivers/interconnect/core.c
index 8569b78a18517b33abeafac091978b25cbc1acc7..22e92b30f73853d5bd2e05b4f52cb5aa22556468 100644
--- a/drivers/interconnect/core.c
+++ b/drivers/interconnect/core.c
@@ -790,7 +790,7 @@ void icc_put(struct icc_path *path)
size_t i;
int ret;
- if (!path || WARN_ON(IS_ERR(path)))
+ if (WARN_ON(IS_ERR_OR_NULL(path)))
return;
ret = icc_set_bw(path, 0, 0);
--
2.43.0
^ permalink raw reply related
* [PATCH 54/61] aoe: Prefer IS_ERR_OR_NULL over manual NULL check
From: Philipp Hahn @ 2026-03-10 11:49 UTC (permalink / raw)
To: amd-gfx, apparmor, bpf, ceph-devel, cocci, dm-devel, dri-devel,
gfs2, intel-gfx, intel-wired-lan, iommu, kvm, linux-arm-kernel,
linux-block, linux-bluetooth, linux-btrfs, linux-cifs, linux-clk,
linux-erofs, linux-ext4, linux-fsdevel, linux-gpio, linux-hyperv,
linux-input, linux-kernel, linux-leds, linux-media, linux-mips,
linux-mm, linux-modules, linux-mtd, linux-nfs, linux-omap,
linux-phy, linux-pm, linux-rockchip, linux-s390, linux-scsi,
linux-sctp, linux-security-module, linux-sh, linux-sound,
linux-stm32, linux-trace-kernel, linux-usb, linux-wireless,
netdev, ntfs3, samba-technical, sched-ext, target-devel,
tipc-discussion, v9fs, Philipp Hahn
Cc: Justin Sanders, Jens Axboe
In-Reply-To: <20260310-b4-is_err_or_null-v1-0-bd63b656022d@avm.de>
Prefer using IS_ERR_OR_NULL() over using IS_ERR() and a manual NULL
check.
Change generated with coccinelle.
To: Justin Sanders <justin@coraid.com>
To: Jens Axboe <axboe@kernel.dk>
Cc: linux-block@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Philipp Hahn <phahn-oss@avm.de>
---
drivers/block/aoe/aoecmd.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/block/aoe/aoecmd.c b/drivers/block/aoe/aoecmd.c
index a4744a30a8af4ff05113f3234021eec728265b4f..b31e539a66433a0a5d6e81117a32d12735ffc1bc 100644
--- a/drivers/block/aoe/aoecmd.c
+++ b/drivers/block/aoe/aoecmd.c
@@ -1268,7 +1268,7 @@ aoe_ktstart(struct ktstate *k)
init_completion(&k->rendez);
task = kthread_run(kthread, k, "%s", k->name);
- if (task == NULL || IS_ERR(task))
+ if (IS_ERR_OR_NULL(task))
return -ENOMEM;
k->task = task;
wait_for_completion(&k->rendez); /* allow kthread to start */
--
2.43.0
^ permalink raw reply related
* [PATCH 50/61] iommu: Prefer IS_ERR_OR_NULL over manual NULL check
From: Philipp Hahn @ 2026-03-10 11:49 UTC (permalink / raw)
To: amd-gfx, apparmor, bpf, ceph-devel, cocci, dm-devel, dri-devel,
gfs2, intel-gfx, intel-wired-lan, iommu, kvm, linux-arm-kernel,
linux-block, linux-bluetooth, linux-btrfs, linux-cifs, linux-clk,
linux-erofs, linux-ext4, linux-fsdevel, linux-gpio, linux-hyperv,
linux-input, linux-kernel, linux-leds, linux-media, linux-mips,
linux-mm, linux-modules, linux-mtd, linux-nfs, linux-omap,
linux-phy, linux-pm, linux-rockchip, linux-s390, linux-scsi,
linux-sctp, linux-security-module, linux-sh, linux-sound,
linux-stm32, linux-trace-kernel, linux-usb, linux-wireless,
netdev, ntfs3, samba-technical, sched-ext, target-devel,
tipc-discussion, v9fs, Philipp Hahn
Cc: Joerg Roedel, Will Deacon, Robin Murphy
In-Reply-To: <20260310-b4-is_err_or_null-v1-0-bd63b656022d@avm.de>
Prefer using IS_ERR_OR_NULL() over using IS_ERR() and a manual NULL
check.
Change generated with coccinelle.
To: Joerg Roedel <joro@8bytes.org>
To: Will Deacon <will@kernel.org>
To: Robin Murphy <robin.murphy@arm.com>
Cc: iommu@lists.linux.dev
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Philipp Hahn <phahn-oss@avm.de>
---
drivers/iommu/omap-iommu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iommu/omap-iommu.c b/drivers/iommu/omap-iommu.c
index 8231d7d6bb6a9202025643639a6b28e6faa84659..500a42b57a997696ff37c76f028a717ab71d01f9 100644
--- a/drivers/iommu/omap-iommu.c
+++ b/drivers/iommu/omap-iommu.c
@@ -881,7 +881,7 @@ static int omap_iommu_attach(struct omap_iommu *obj, u32 *iopgd)
**/
static void omap_iommu_detach(struct omap_iommu *obj)
{
- if (!obj || IS_ERR(obj))
+ if (IS_ERR_OR_NULL(obj))
return;
spin_lock(&obj->iommu_lock);
--
2.43.0
^ permalink raw reply related
* [PATCH 27/61] net/netlink: Prefer IS_ERR_OR_NULL over manual NULL check
From: Philipp Hahn @ 2026-03-10 11:48 UTC (permalink / raw)
To: amd-gfx, apparmor, bpf, ceph-devel, cocci, dm-devel, dri-devel,
gfs2, intel-gfx, intel-wired-lan, iommu, kvm, linux-arm-kernel,
linux-block, linux-bluetooth, linux-btrfs, linux-cifs, linux-clk,
linux-erofs, linux-ext4, linux-fsdevel, linux-gpio, linux-hyperv,
linux-input, linux-kernel, linux-leds, linux-media, linux-mips,
linux-mm, linux-modules, linux-mtd, linux-nfs, linux-omap,
linux-phy, linux-pm, linux-rockchip, linux-s390, linux-scsi,
linux-sctp, linux-security-module, linux-sh, linux-sound,
linux-stm32, linux-trace-kernel, linux-usb, linux-wireless,
netdev, ntfs3, samba-technical, sched-ext, target-devel,
tipc-discussion, v9fs, Philipp Hahn
Cc: David S. Miller, Eric Dumazet, Jakub Kicinski, Paolo Abeni,
Simon Horman
In-Reply-To: <20260310-b4-is_err_or_null-v1-0-bd63b656022d@avm.de>
Prefer using IS_ERR_OR_NULL() over using IS_ERR() and a manual NULL
check.
Change generated with coccinelle.
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 <phahn-oss@avm.de>
---
net/netlink/af_netlink.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index 4d609d5cf40653e04de60f2d28ee26b8bdcdc2ed..58707b9da84adf1002ab9eff9401fa2083374189 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -2667,7 +2667,7 @@ static void *netlink_seq_start(struct seq_file *seq, loff_t *posp)
netlink_walk_start(iter);
- for (pos = *posp; pos && obj && !IS_ERR(obj); pos--)
+ for (pos = *posp; pos && !IS_ERR_OR_NULL(obj); pos--)
obj = __netlink_seq_next(seq);
return obj;
--
2.43.0
^ permalink raw reply related
* [PATCH 51/61] leds: Prefer IS_ERR_OR_NULL over manual NULL check
From: Philipp Hahn @ 2026-03-10 11:49 UTC (permalink / raw)
To: amd-gfx, apparmor, bpf, ceph-devel, cocci, dm-devel, dri-devel,
gfs2, intel-gfx, intel-wired-lan, iommu, kvm, linux-arm-kernel,
linux-block, linux-bluetooth, linux-btrfs, linux-cifs, linux-clk,
linux-erofs, linux-ext4, linux-fsdevel, linux-gpio, linux-hyperv,
linux-input, linux-kernel, linux-leds, linux-media, linux-mips,
linux-mm, linux-modules, linux-mtd, linux-nfs, linux-omap,
linux-phy, linux-pm, linux-rockchip, linux-s390, linux-scsi,
linux-sctp, linux-security-module, linux-sh, linux-sound,
linux-stm32, linux-trace-kernel, linux-usb, linux-wireless,
netdev, ntfs3, samba-technical, sched-ext, target-devel,
tipc-discussion, v9fs, Philipp Hahn
Cc: Lee Jones, Pavel Machek
In-Reply-To: <20260310-b4-is_err_or_null-v1-0-bd63b656022d@avm.de>
Prefer using IS_ERR_OR_NULL() over using IS_ERR() and a manual NULL
check.
Change generated with coccinelle.
To: Lee Jones <lee@kernel.org>
To: Pavel Machek <pavel@kernel.org>
Cc: linux-leds@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Philipp Hahn <phahn-oss@avm.de>
---
drivers/leds/trigger/ledtrig-tty.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/leds/trigger/ledtrig-tty.c b/drivers/leds/trigger/ledtrig-tty.c
index 8eb6286b33ac3cdcbb72ed9ad5ad7105e15d20b6..3725571144d910b225ca9605771fc0f0c8355efd 100644
--- a/drivers/leds/trigger/ledtrig-tty.c
+++ b/drivers/leds/trigger/ledtrig-tty.c
@@ -220,7 +220,7 @@ static void ledtrig_tty_work(struct work_struct *work)
goto out;
tty = tty_kopen_shared(devno);
- if (IS_ERR(tty) || !tty)
+ if (IS_ERR_OR_NULL(tty))
/* What to do? retry or abort */
goto out;
--
2.43.0
^ permalink raw reply related
* [PATCH 61/61] file: Drop unlikely() around IS_ERR_OR_NULL()
From: Philipp Hahn @ 2026-03-10 11:49 UTC (permalink / raw)
To: amd-gfx, apparmor, bpf, ceph-devel, cocci, dm-devel, dri-devel,
gfs2, intel-gfx, intel-wired-lan, iommu, kvm, linux-arm-kernel,
linux-block, linux-bluetooth, linux-btrfs, linux-cifs, linux-clk,
linux-erofs, linux-ext4, linux-fsdevel, linux-gpio, linux-hyperv,
linux-input, linux-kernel, linux-leds, linux-media, linux-mips,
linux-mm, linux-modules, linux-mtd, linux-nfs, linux-omap,
linux-phy, linux-pm, linux-rockchip, linux-s390, linux-scsi,
linux-sctp, linux-security-module, linux-sh, linux-sound,
linux-stm32, linux-trace-kernel, linux-usb, linux-wireless,
netdev, ntfs3, samba-technical, sched-ext, target-devel,
tipc-discussion, v9fs, Philipp Hahn
Cc: Christian Brauner, Jeff Layton
In-Reply-To: <20260310-b4-is_err_or_null-v1-0-bd63b656022d@avm.de>
IS_ERR_OR_NULL() already uses likely(!ptr) internally. checkpatch does
not like nesting it:
> WARNING: nested (un)?likely() calls, IS_ERR_OR_NULL already uses
> unlikely() internally
Remove the explicit use of unlikely().
Change generated with coccinelle.
To: Christian Brauner <brauner@kernel.org>
To: Jeff Layton <jlayton@kernel.org>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Philipp Hahn <phahn-oss@avm.de>
---
include/linux/file.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/file.h b/include/linux/file.h
index 27484b444d3155685cdbb89f546f26ef66e3e1b4..007b9b9d365a052c1c056e12571eaf4f8ef5a45c 100644
--- a/include/linux/file.h
+++ b/include/linux/file.h
@@ -163,7 +163,7 @@ static inline void class_fd_prepare_destructor(const struct fd_prepare *fdf)
{
if (unlikely(fdf->__fd >= 0))
put_unused_fd(fdf->__fd);
- if (unlikely(!IS_ERR_OR_NULL(fdf->__file)))
+ if (!IS_ERR_OR_NULL(fdf->__file))
fput(fdf->__file);
}
--
2.43.0
^ permalink raw reply related
* [PATCH 58/61] arch/x86: Prefer IS_ERR_OR_NULL over manual NULL check
From: Philipp Hahn @ 2026-03-10 11:49 UTC (permalink / raw)
To: amd-gfx, apparmor, bpf, ceph-devel, cocci, dm-devel, dri-devel,
gfs2, intel-gfx, intel-wired-lan, iommu, kvm, linux-arm-kernel,
linux-block, linux-bluetooth, linux-btrfs, linux-cifs, linux-clk,
linux-erofs, linux-ext4, linux-fsdevel, linux-gpio, linux-hyperv,
linux-input, linux-kernel, linux-leds, linux-media, linux-mips,
linux-mm, linux-modules, linux-mtd, linux-nfs, linux-omap,
linux-phy, linux-pm, linux-rockchip, linux-s390, linux-scsi,
linux-sctp, linux-security-module, linux-sh, linux-sound,
linux-stm32, linux-trace-kernel, linux-usb, linux-wireless,
netdev, ntfs3, samba-technical, sched-ext, target-devel,
tipc-discussion, v9fs, Philipp Hahn
Cc: Thomas Gleixner, Ingo Molnar, Borislav Petkov, Dave Hansen, x86,
H. Peter Anvin
In-Reply-To: <20260310-b4-is_err_or_null-v1-0-bd63b656022d@avm.de>
Prefer using IS_ERR_OR_NULL() over using IS_ERR() and a manual NULL
check.
IS_ERR_OR_NULL() already uses likely(!ptr) internally. checkpatch does
not like nesting it:
> WARNING: nested (un)?likely() calls, IS_ERR_OR_NULL already uses
> unlikely() internally
Remove the explicit use of likely().
Semantich change: Previously the code only printed the warning on error,
but not when the pointer was NULL. Now the warning is printed in both
cases!
Change found with coccinelle.
To: Thomas Gleixner <tglx@kernel.org>
To: Ingo Molnar <mingo@redhat.com>
To: Borislav Petkov <bp@alien8.de>
To: Dave Hansen <dave.hansen@linux.intel.com>
To: x86@kernel.org
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Philipp Hahn <phahn-oss@avm.de>
---
arch/x86/kernel/callthunks.c | 2 +-
arch/x86/kernel/irq.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/x86/kernel/callthunks.c b/arch/x86/kernel/callthunks.c
index e37728f7032277a99ffb0e6bb7dfa318660e56a0..6dc45838d8e439e117815b85e2840bb3a6688ed8 100644
--- a/arch/x86/kernel/callthunks.c
+++ b/arch/x86/kernel/callthunks.c
@@ -212,7 +212,7 @@ static __init_or_module void patch_call(void *addr, const struct core_text *ct)
return;
dest = call_get_dest(addr);
- if (!dest || WARN_ON_ONCE(IS_ERR(dest)))
+ if (WARN_ON_ONCE(IS_ERR_OR_NULL(dest)))
return;
if (!is_coretext(ct, dest))
diff --git a/arch/x86/kernel/irq.c b/arch/x86/kernel/irq.c
index ec77be217eaf5f558fa73c2ff6cf1ab8953ee2f8..81963909066d72607f58d3e443a21a3b3e701a99 100644
--- a/arch/x86/kernel/irq.c
+++ b/arch/x86/kernel/irq.c
@@ -282,7 +282,7 @@ static __always_inline bool call_irq_handler(int vector, struct pt_regs *regs)
{
struct irq_desc *desc = __this_cpu_read(vector_irq[vector]);
- if (likely(!IS_ERR_OR_NULL(desc))) {
+ if (!IS_ERR_OR_NULL(desc)) {
handle_irq(desc, regs);
return true;
}
--
2.43.0
^ permalink raw reply related
* [PATCH 43/61] s390: Prefer IS_ERR_OR_NULL over manual NULL check
From: Philipp Hahn @ 2026-03-10 11:49 UTC (permalink / raw)
To: amd-gfx, apparmor, bpf, ceph-devel, cocci, dm-devel, dri-devel,
gfs2, intel-gfx, intel-wired-lan, iommu, kvm, linux-arm-kernel,
linux-block, linux-bluetooth, linux-btrfs, linux-cifs, linux-clk,
linux-erofs, linux-ext4, linux-fsdevel, linux-gpio, linux-hyperv,
linux-input, linux-kernel, linux-leds, linux-media, linux-mips,
linux-mm, linux-modules, linux-mtd, linux-nfs, linux-omap,
linux-phy, linux-pm, linux-rockchip, linux-s390, linux-scsi,
linux-sctp, linux-security-module, linux-sh, linux-sound,
linux-stm32, linux-trace-kernel, linux-usb, linux-wireless,
netdev, ntfs3, samba-technical, sched-ext, target-devel,
tipc-discussion, v9fs, Philipp Hahn
Cc: Heiko Carstens, Vasily Gorbik, Alexander Gordeev,
Christian Borntraeger, Sven Schnelle
In-Reply-To: <20260310-b4-is_err_or_null-v1-0-bd63b656022d@avm.de>
Prefer using IS_ERR_OR_NULL() over using IS_ERR() and a manual NULL
check.
Change generated with coccinelle.
To: Heiko Carstens <hca@linux.ibm.com>
To: Vasily Gorbik <gor@linux.ibm.com>
To: Alexander Gordeev <agordeev@linux.ibm.com>
To: Christian Borntraeger <borntraeger@linux.ibm.com>
To: Sven Schnelle <svens@linux.ibm.com>
Cc: linux-s390@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Philipp Hahn <phahn-oss@avm.de>
---
drivers/s390/char/tape_class.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/s390/char/tape_class.c b/drivers/s390/char/tape_class.c
index b69430220a813e764ec1514c27ad486ac9e95575..aad4fff1faea69ae055b517910ec6467b14cb6e8 100644
--- a/drivers/s390/char/tape_class.c
+++ b/drivers/s390/char/tape_class.c
@@ -100,7 +100,7 @@ EXPORT_SYMBOL(register_tape_dev);
void unregister_tape_dev(struct device *device, struct tape_class_device *tcd)
{
- if (tcd != NULL && !IS_ERR(tcd)) {
+ if (!IS_ERR_OR_NULL(tcd)) {
sysfs_remove_link(&device->kobj, tcd->mode_name);
device_destroy(&tape_class, tcd->char_device->dev);
cdev_del(tcd->char_device);
--
2.43.0
^ permalink raw reply related
* [PATCH 56/61] clk: Prefer IS_ERR_OR_NULL over manual NULL check
From: Philipp Hahn @ 2026-03-10 11:49 UTC (permalink / raw)
To: amd-gfx, apparmor, bpf, ceph-devel, cocci, dm-devel, dri-devel,
gfs2, intel-gfx, intel-wired-lan, iommu, kvm, linux-arm-kernel,
linux-block, linux-bluetooth, linux-btrfs, linux-cifs, linux-clk,
linux-erofs, linux-ext4, linux-fsdevel, linux-gpio, linux-hyperv,
linux-input, linux-kernel, linux-leds, linux-media, linux-mips,
linux-mm, linux-modules, linux-mtd, linux-nfs, linux-omap,
linux-phy, linux-pm, linux-rockchip, linux-s390, linux-scsi,
linux-sctp, linux-security-module, linux-sh, linux-sound,
linux-stm32, linux-trace-kernel, linux-usb, linux-wireless,
netdev, ntfs3, samba-technical, sched-ext, target-devel,
tipc-discussion, v9fs, Philipp Hahn
Cc: Michael Turquette, Stephen Boyd, Daniel Lezcano, Thomas Gleixner
In-Reply-To: <20260310-b4-is_err_or_null-v1-0-bd63b656022d@avm.de>
Prefer using IS_ERR_OR_NULL() over using IS_ERR() and a manual NULL
check.
Semantich change: Previously the code only printed the warning on error,
but not when the pointer was NULL. Now the warning is printed in both
cases!
Change found with coccinelle.
To: Michael Turquette <mturquette@baylibre.com>
To: Stephen Boyd <sboyd@kernel.org>
To: Daniel Lezcano <daniel.lezcano@kernel.org>
To: Thomas Gleixner <tglx@kernel.org>
Cc: linux-clk@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Philipp Hahn <phahn-oss@avm.de>
---
drivers/clk/clk.c | 4 ++--
drivers/clocksource/timer-pxa.c | 2 +-
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
index 47093cda9df32223c1120c3710261296027c4cd3..35146e3869a7dd93741d10b7223d4488a9216ed1 100644
--- a/drivers/clk/clk.c
+++ b/drivers/clk/clk.c
@@ -4558,7 +4558,7 @@ void clk_unregister(struct clk *clk)
unsigned long flags;
const struct clk_ops *ops;
- if (!clk || WARN_ON_ONCE(IS_ERR(clk)))
+ if (WARN_ON_ONCE(IS_ERR_OR_NULL(clk)))
return;
clk_debug_unregister(clk->core);
@@ -4744,7 +4744,7 @@ void __clk_put(struct clk *clk)
{
struct module *owner;
- if (!clk || WARN_ON_ONCE(IS_ERR(clk)))
+ if (WARN_ON_ONCE(IS_ERR_OR_NULL(clk)))
return;
clk_prepare_lock();
diff --git a/drivers/clocksource/timer-pxa.c b/drivers/clocksource/timer-pxa.c
index 7ad0e5adb2ffac4125c34710fc67f4b45f30331d..f65fb0b7fc318b766227e5e7a4c0fb08ba11c8f9 100644
--- a/drivers/clocksource/timer-pxa.c
+++ b/drivers/clocksource/timer-pxa.c
@@ -218,7 +218,7 @@ void __init pxa_timer_nodt_init(int irq, void __iomem *base)
timer_base = base;
clk = clk_get(NULL, "OSTIMER0");
- if (clk && !IS_ERR(clk)) {
+ if (!IS_ERR_OR_NULL(clk)) {
clk_prepare_enable(clk);
pxa_timer_common_init(irq, clk_get_rate(clk));
} else {
--
2.43.0
^ permalink raw reply related
* [PATCH 60/61] Input alps: Drop unlikely() around IS_ERR_OR_NULL()
From: Philipp Hahn @ 2026-03-10 11:49 UTC (permalink / raw)
To: amd-gfx, apparmor, bpf, ceph-devel, cocci, dm-devel, dri-devel,
gfs2, intel-gfx, intel-wired-lan, iommu, kvm, linux-arm-kernel,
linux-block, linux-bluetooth, linux-btrfs, linux-cifs, linux-clk,
linux-erofs, linux-ext4, linux-fsdevel, linux-gpio, linux-hyperv,
linux-input, linux-kernel, linux-leds, linux-media, linux-mips,
linux-mm, linux-modules, linux-mtd, linux-nfs, linux-omap,
linux-phy, linux-pm, linux-rockchip, linux-s390, linux-scsi,
linux-sctp, linux-security-module, linux-sh, linux-sound,
linux-stm32, linux-trace-kernel, linux-usb, linux-wireless,
netdev, ntfs3, samba-technical, sched-ext, target-devel,
tipc-discussion, v9fs, Philipp Hahn
Cc: Pali Rohár, Dmitry Torokhov
In-Reply-To: <20260310-b4-is_err_or_null-v1-0-bd63b656022d@avm.de>
IS_ERR_OR_NULL() already uses likely(!ptr) internally. checkpatch does
not like nesting it:
> WARNING: nested (un)?likely() calls, IS_ERR_OR_NULL already uses
> unlikely() internally
Remove the explicit use of unlikely().
Change generated with coccinelle.
To: "Pali Rohár" <pali@kernel.org>
To: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: linux-input@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Philipp Hahn <phahn-oss@avm.de>
---
drivers/input/mouse/alps.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c
index f3d3b6b4e02d798e75a90333ace72a367befdbac..82e11efad7f7f02b4aaefde340f9b71fa792cf6b 100644
--- a/drivers/input/mouse/alps.c
+++ b/drivers/input/mouse/alps.c
@@ -1482,7 +1482,7 @@ static void alps_report_bare_ps2_packet(struct psmouse *psmouse,
/* On V2 devices the DualPoint Stick reports bare packets */
dev = priv->dev2;
dev2 = psmouse->dev;
- } else if (unlikely(IS_ERR_OR_NULL(priv->dev3))) {
+ } else if (IS_ERR_OR_NULL(priv->dev3)) {
/* Register dev3 mouse if we received PS/2 packet first time */
if (!IS_ERR(priv->dev3))
psmouse_queue_work(psmouse, &priv->dev3_register_work,
--
2.43.0
^ permalink raw reply related
* [PATCH 24/61] net/9p: Prefer IS_ERR_OR_NULL over manual NULL check
From: Philipp Hahn @ 2026-03-10 11:48 UTC (permalink / raw)
To: amd-gfx, apparmor, bpf, ceph-devel, cocci, dm-devel, dri-devel,
gfs2, intel-gfx, intel-wired-lan, iommu, kvm, linux-arm-kernel,
linux-block, linux-bluetooth, linux-btrfs, linux-cifs, linux-clk,
linux-erofs, linux-ext4, linux-fsdevel, linux-gpio, linux-hyperv,
linux-input, linux-kernel, linux-leds, linux-media, linux-mips,
linux-mm, linux-modules, linux-mtd, linux-nfs, linux-omap,
linux-phy, linux-pm, linux-rockchip, linux-s390, linux-scsi,
linux-sctp, linux-security-module, linux-sh, linux-sound,
linux-stm32, linux-trace-kernel, linux-usb, linux-wireless,
netdev, ntfs3, samba-technical, sched-ext, target-devel,
tipc-discussion, v9fs, Philipp Hahn
Cc: Eric Van Hensbergen, Latchesar Ionkov, Dominique Martinet,
Christian Schoenebeck, David S. Miller, Eric Dumazet,
Jakub Kicinski, Paolo Abeni, Simon Horman
In-Reply-To: <20260310-b4-is_err_or_null-v1-0-bd63b656022d@avm.de>
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 <phahn-oss@avm.de>
---
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..4bde6bd716f323c819745e64c7aac0dea7beb72f 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..60461344b536bcb6e94112aace75a88b6a99ad86 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
^ permalink raw reply related
* [PATCH 53/61] hyperv: Prefer IS_ERR_OR_NULL over manual NULL check
From: Philipp Hahn @ 2026-03-10 11:49 UTC (permalink / raw)
To: amd-gfx, apparmor, bpf, ceph-devel, cocci, dm-devel, dri-devel,
gfs2, intel-gfx, intel-wired-lan, iommu, kvm, linux-arm-kernel,
linux-block, linux-bluetooth, linux-btrfs, linux-cifs, linux-clk,
linux-erofs, linux-ext4, linux-fsdevel, linux-gpio, linux-hyperv,
linux-input, linux-kernel, linux-leds, linux-media, linux-mips,
linux-mm, linux-modules, linux-mtd, linux-nfs, linux-omap,
linux-phy, linux-pm, linux-rockchip, linux-s390, linux-scsi,
linux-sctp, linux-security-module, linux-sh, linux-sound,
linux-stm32, linux-trace-kernel, linux-usb, linux-wireless,
netdev, ntfs3, samba-technical, sched-ext, target-devel,
tipc-discussion, v9fs, Philipp Hahn
Cc: K. Y. Srinivasan, Haiyang Zhang, Wei Liu, Dexuan Cui, Long Li
In-Reply-To: <20260310-b4-is_err_or_null-v1-0-bd63b656022d@avm.de>
Prefer using IS_ERR_OR_NULL() over using IS_ERR() and a manual NULL
check.
Change generated with coccinelle.
To: "K. Y. Srinivasan" <kys@microsoft.com>
To: Haiyang Zhang <haiyangz@microsoft.com>
To: Wei Liu <wei.liu@kernel.org>
To: Dexuan Cui <decui@microsoft.com>
To: Long Li <longli@microsoft.com>
Cc: linux-hyperv@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Philipp Hahn <phahn-oss@avm.de>
---
drivers/hv/mshv_eventfd.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/hv/mshv_eventfd.c b/drivers/hv/mshv_eventfd.c
index d8471546e6a0c7e6eca933c640459f1d02152cb2..24dff7a498ac9c3edd31f4c9bc2f23729ba2a6ce 100644
--- a/drivers/hv/mshv_eventfd.c
+++ b/drivers/hv/mshv_eventfd.c
@@ -516,10 +516,10 @@ static int mshv_irqfd_assign(struct mshv_partition *pt,
if (irqfd->irqfd_resampler)
mshv_irqfd_resampler_shutdown(irqfd);
- if (resamplefd && !IS_ERR(resamplefd))
+ if (!IS_ERR_OR_NULL(resamplefd))
eventfd_ctx_put(resamplefd);
- if (eventfd && !IS_ERR(eventfd))
+ if (!IS_ERR_OR_NULL(eventfd))
eventfd_ctx_put(eventfd);
out:
--
2.43.0
^ permalink raw reply related
* [PATCH 57/61] reset: Prefer IS_ERR_OR_NULL over manual NULL check
From: Philipp Hahn @ 2026-03-10 11:49 UTC (permalink / raw)
To: amd-gfx, apparmor, bpf, ceph-devel, cocci, dm-devel, dri-devel,
gfs2, intel-gfx, intel-wired-lan, iommu, kvm, linux-arm-kernel,
linux-block, linux-bluetooth, linux-btrfs, linux-cifs, linux-clk,
linux-erofs, linux-ext4, linux-fsdevel, linux-gpio, linux-hyperv,
linux-input, linux-kernel, linux-leds, linux-media, linux-mips,
linux-mm, linux-modules, linux-mtd, linux-nfs, linux-omap,
linux-phy, linux-pm, linux-rockchip, linux-s390, linux-scsi,
linux-sctp, linux-security-module, linux-sh, linux-sound,
linux-stm32, linux-trace-kernel, linux-usb, linux-wireless,
netdev, ntfs3, samba-technical, sched-ext, target-devel,
tipc-discussion, v9fs, Philipp Hahn
Cc: Philipp Zabel
In-Reply-To: <20260310-b4-is_err_or_null-v1-0-bd63b656022d@avm.de>
Prefer using IS_ERR_OR_NULL() over using IS_ERR() and a manual NULL
check.
Semantich change: Previously the code only printed the warning on error,
but not when the pointer was NULL. Now the warning is printed in both
cases!
Change found with coccinelle.
To: Philipp Zabel <p.zabel@pengutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Philipp Hahn <phahn-oss@avm.de>
---
drivers/reset/core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/reset/core.c b/drivers/reset/core.c
index fceec45c8afc1e74fe46311bdc023ff257e8d770..649bb4ebabb20a09349ccbfc62f8280621df450e 100644
--- a/drivers/reset/core.c
+++ b/drivers/reset/core.c
@@ -715,7 +715,7 @@ EXPORT_SYMBOL_GPL(reset_control_bulk_acquire);
*/
void reset_control_release(struct reset_control *rstc)
{
- if (!rstc || WARN_ON(IS_ERR(rstc)))
+ if (WARN_ON(IS_ERR_OR_NULL(rstc)))
return;
if (reset_control_is_array(rstc))
--
2.43.0
^ permalink raw reply related
* [PATCH 48/61] mtd: Prefer IS_ERR_OR_NULL over manual NULL check
From: Philipp Hahn @ 2026-03-10 11:49 UTC (permalink / raw)
To: amd-gfx, apparmor, bpf, ceph-devel, cocci, dm-devel, dri-devel,
gfs2, intel-gfx, intel-wired-lan, iommu, kvm, linux-arm-kernel,
linux-block, linux-bluetooth, linux-btrfs, linux-cifs, linux-clk,
linux-erofs, linux-ext4, linux-fsdevel, linux-gpio, linux-hyperv,
linux-input, linux-kernel, linux-leds, linux-media, linux-mips,
linux-mm, linux-modules, linux-mtd, linux-nfs, linux-omap,
linux-phy, linux-pm, linux-rockchip, linux-s390, linux-scsi,
linux-sctp, linux-security-module, linux-sh, linux-sound,
linux-stm32, linux-trace-kernel, linux-usb, linux-wireless,
netdev, ntfs3, samba-technical, sched-ext, target-devel,
tipc-discussion, v9fs, Philipp Hahn
Cc: Miquel Raynal, Richard Weinberger, Vignesh Raghavendra
In-Reply-To: <20260310-b4-is_err_or_null-v1-0-bd63b656022d@avm.de>
Prefer using IS_ERR_OR_NULL() over using IS_ERR() and a manual NULL
check.
Change generated with coccinelle.
To: Miquel Raynal <miquel.raynal@bootlin.com>
To: Richard Weinberger <richard@nod.at>
To: Vignesh Raghavendra <vigneshr@ti.com>
Cc: linux-mtd@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Philipp Hahn <phahn-oss@avm.de>
---
drivers/mtd/nand/raw/gpio.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/drivers/mtd/nand/raw/gpio.c b/drivers/mtd/nand/raw/gpio.c
index 69e5e43532a448aa6273f3df79f53145784ccc05..86a8b62fb9e8510d36f925b8b468ec17c77e26d8 100644
--- a/drivers/mtd/nand/raw/gpio.c
+++ b/drivers/mtd/nand/raw/gpio.c
@@ -276,9 +276,9 @@ static void gpio_nand_remove(struct platform_device *pdev)
nand_cleanup(chip);
/* Enable write protection and disable the chip */
- if (gpiomtd->nwp && !IS_ERR(gpiomtd->nwp))
+ if (!IS_ERR_OR_NULL(gpiomtd->nwp))
gpiod_set_value(gpiomtd->nwp, 0);
- if (gpiomtd->nce && !IS_ERR(gpiomtd->nce))
+ if (!IS_ERR_OR_NULL(gpiomtd->nce))
gpiod_set_value(gpiomtd->nce, 0);
}
@@ -358,7 +358,7 @@ static int gpio_nand_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, gpiomtd);
/* Disable write protection, if wired up */
- if (gpiomtd->nwp && !IS_ERR(gpiomtd->nwp))
+ if (!IS_ERR_OR_NULL(gpiomtd->nwp))
gpiod_direction_output(gpiomtd->nwp, 1);
/*
@@ -381,10 +381,10 @@ static int gpio_nand_probe(struct platform_device *pdev)
return 0;
err_wp:
- if (gpiomtd->nwp && !IS_ERR(gpiomtd->nwp))
+ if (!IS_ERR_OR_NULL(gpiomtd->nwp))
gpiod_set_value(gpiomtd->nwp, 0);
out_ce:
- if (gpiomtd->nce && !IS_ERR(gpiomtd->nce))
+ if (!IS_ERR_OR_NULL(gpiomtd->nce))
gpiod_set_value(gpiomtd->nce, 0);
return ret;
--
2.43.0
^ permalink raw reply related
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