From nobody Thu Apr 9 08:15:55 2026 Received: from mail.avm.de (mail.avm.de [212.42.244.119]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D72A74A2E2E; Tue, 10 Mar 2026 11:55:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=212.42.244.119 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773143765; cv=none; b=GWxkI2dRg/Z5k+3n8S/ZoiZHeyhkQbbGtnfUFOdcCLJlZ+xHXg5Y5lkMpTOl4X25UR/cPWKI+WRc0S+sC1o0AbHnzGHkS9l/8nigKg3VXEzVXz6wtojDSLdqUVrOaLPIhe9fFpAwHGOanOU/jNCQXAAmhIg4KycHGJZOy3NEoKM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773143765; c=relaxed/simple; bh=Zdu+cVQUurUlnC57nYv7WmkJa7Su1n9ZL+7ubRQiCbU=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=ETGOgQO62S29Y5rBKCuC50OEKJV223TzORmtHmIdngsCo3qYS6+ji1+z2CWyUvYCvv5AAyv+VFgxxzRvminWt2AQCK9B4XBS7HQF/cWR8tkS+/gSdpm5X9UUSu/Z2LpBPy3z2N7xcPgxqRc0g4oOpVGf+KWO7TYSAKxMckR+tI4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=avm.de; spf=pass smtp.mailfrom=avm.de; dkim=pass (1024-bit key) header.d=avm.de header.i=@avm.de header.b=arIjqC+e; arc=none smtp.client-ip=212.42.244.119 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=avm.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=avm.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=avm.de header.i=@avm.de header.b="arIjqC+e" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=avm.de; s=mail; t=1773143729; bh=Zdu+cVQUurUlnC57nYv7WmkJa7Su1n9ZL+7ubRQiCbU=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=arIjqC+eOW50ePPRI7IzTKWN2gbhB0tQ9WRbPXDZdH2y8Tl8MVJAS9gxKOCgGSNO1 MKRth9R9YTwOofMsTkyRe5Kz4PcjK/cLboke0inMKDssNbfSjXTkXB1/ZhuTMFSoly YzXp7hvqApt2TDtbnjQwMPLewEHxBbUoVg9XuPpY= Received: from [212.42.244.71] (helo=mail.avm.de) by mail.avm.de with ESMTP (eXpurgate 4.55.2) (envelope-from ) id 69b006b1-2367-7f0000032729-7f000001ca3e-1 for ; Tue, 10 Mar 2026 12:55:29 +0100 Received: from mail-auth.avm.de (dovecot-mx-01.avm.de [212.42.244.71]) by mail.avm.de (Postfix) with ESMTPS; Tue, 10 Mar 2026 12:55:29 +0100 (CET) From: Philipp Hahn Date: Tue, 10 Mar 2026 12:49:24 +0100 Subject: [PATCH 58/61] arch/x86: Prefer IS_ERR_OR_NULL over manual NULL check Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260310-b4-is_err_or_null-v1-58-bd63b656022d@avm.de> References: <20260310-b4-is_err_or_null-v1-0-bd63b656022d@avm.de> In-Reply-To: <20260310-b4-is_err_or_null-v1-0-bd63b656022d@avm.de> To: amd-gfx@lists.freedesktop.org, apparmor@lists.ubuntu.com, bpf@vger.kernel.org, ceph-devel@vger.kernel.org, cocci@inria.fr, dm-devel@lists.linux.dev, dri-devel@lists.freedesktop.org, gfs2@lists.linux.dev, intel-gfx@lists.freedesktop.org, intel-wired-lan@lists.osuosl.org, iommu@lists.linux.dev, kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-block@vger.kernel.org, linux-bluetooth@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-cifs@vger.kernel.org, linux-clk@vger.kernel.org, linux-erofs@lists.ozlabs.org, linux-ext4@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-gpio@vger.kernel.org, linux-hyperv@vger.kernel.org, linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, linux-leds@vger.kernel.org, linux-media@vger.kernel.org, linux-mips@vger.kernel.org, linux-mm@kvack.org, linux-modules@vger.kernel.org, linux-mtd@lists.infradead.org, linux-nfs@vger.kernel.org, linux-omap@vger.kernel.org, linux-phy@lists.infradead.org, linux-pm@vger.kernel.org, linux-rockchip@lists.infradead.org, linux-s390@vger.kernel.org, linux-scsi@vger.kernel.org, linux-sctp@vger.kernel.org, linux-security-module@vger.kernel.org, linux-sh@vger.kernel.org, linux-sound@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-trace-kernel@vger.kernel.org, linux-usb@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org, ntfs3@lists.linux.dev, samba-technical@lists.samba.org, sched-ext@lists.linux.dev, target-devel@vger.kernel.org, tipc-discussion@lists.sourceforge.net, v9fs@lists.linux.dev, Philipp Hahn Cc: Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" X-Developer-Signature: v=1; a=openpgp-sha256; l=1972; i=phahn-oss@avm.de; h=from:subject:message-id; bh=Zdu+cVQUurUlnC57nYv7WmkJa7Su1n9ZL+7ubRQiCbU=; b=owEBbQGS/pANAwAKATQtBlPRrKzbAcsmYgBpsAabkCM/59lsV79Q3PWR22p56JLuGabUpuR4i qxQub+ly/qJATMEAAEKAB0WIQQ5bPBtrWDUcDQCppg0LQZT0ays2wUCabAGmwAKCRA0LQZT0ays 2xXOB/9ZPHi30qdJIkWySghqlR16lgaAoi3kyqOX8y681/67uYGL/oYTixO52tnBrjVPqGtMJMl /Q1KhfevGkVNYzFAfMrFBpAZag+UIgbv/BCAd+mAYMHmfUSOVrYD15iCyuV/mzNjhjHEufwESj4 I0XaRrF8IjuTyxoOaAktjvNz5kPAQuNzEBmaZ3v2GCRGsUPgyn1rW2fNRbOhVzN0Q0ZlAeRhTj/ Qq0svuNBXvGJBVWHLKzaFNv3dtadS6o0vkr1vZsO43v1j0qtJ5bmVxhOhChUZ8M0SvSfZzOtGDb woeHnmnHVjGmRuu20BTVhdN6fCN/9hgCBGPx0vI7/S13IInk X-Developer-Key: i=phahn-oss@avm.de; a=openpgp; fpr=58AF7C2E007CDBE62C59E078F50EFDCF8AD04B1A X-purgate-ID: 149429::1773143729-8448CE1F-1FDA919B/0/0 X-purgate-type: clean X-purgate-size: 1974 X-purgate-Ad: Categorized by eleven eXpurgate (R) https://www.eleven.de X-purgate: This mail is considered clean (visit https://www.eleven.de for further information) X-purgate: clean 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 To: Ingo Molnar To: Borislav Petkov To: Dave Hansen To: x86@kernel.org To: "H. Peter Anvin" Cc: linux-kernel@vger.kernel.org Signed-off-by: Philipp Hahn --- 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..6dc45838d8e439e117815b85e28= 40bb3a6688ed8 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, con= st struct core_text *ct) return; =20 dest =3D call_get_dest(addr); - if (!dest || WARN_ON_ONCE(IS_ERR(dest))) + if (WARN_ON_ONCE(IS_ERR_OR_NULL(dest))) return; =20 if (!is_coretext(ct, dest)) diff --git a/arch/x86/kernel/irq.c b/arch/x86/kernel/irq.c index ec77be217eaf5f558fa73c2ff6cf1ab8953ee2f8..81963909066d72607f58d3e443a= 21a3b3e701a99 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 =3D __this_cpu_read(vector_irq[vector]); =20 - if (likely(!IS_ERR_OR_NULL(desc))) { + if (!IS_ERR_OR_NULL(desc)) { handle_irq(desc, regs); return true; } --=20 2.43.0