From nobody Fri Sep 25 16:03:28 2026 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 52E4F56E05B; Thu, 10 Sep 2026 17:56:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789063008; cv=none; b=DuTpPajvMp1VeAIQRGoQugbpwResYZGu28hAeF7S9Ve89puj/cUpXdnKjUE2ome9IB9owcsCH82zGvDmK1NSuP4zaFua/gzK5oW9VFDFWFOljQv2neGsk6UQegvCPDGKeu5InVDM9HcMbPFUfmOkslzTwJMwsOKEOgoXZGNmG8c= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789063008; c=relaxed/simple; bh=32jdSFjdfOg0u5OevMlQMRGedokP33/5ea+cJ51Fo4k=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=nF3bOKAv509dJ1D39a7ypj6KdyCMmKhEWtAVn4KUTAvtyIsf3z0UJtz3GVjKIOcx/0TyOv1kLXrH78okfHjk/5Ct7IZSExWYcEOmZ3lDIrn+nBSbPCEN8ktH767CxWtCrc24LAI5xC3uhWKSc+cPACxKm/bCtKsFYhYFpG2yWVY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=TYKuN/TJ; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="TYKuN/TJ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 702A31F00893; Thu, 10 Sep 2026 17:56:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1789063007; bh=n88X9FTg1q6xLXp2uwI00NmcVcngfPjMolzBATDbazw=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=TYKuN/TJrK9YAg2qLjNok0wCj/4eKr8iocVUQbr/NbPzkGo+wza19GuhSUIOSf1FQ tNsFIOaVXbd9s8TRLZ1OmSTpBrYMWwXEwtKZYu4ojZFBX7m5dWOcNZgmp+Rj3rqlxZ d1mFK44WwrjGl1L7gBxneAwzzaTcmQQ0W6smw94DVWOinmNFb+E59+p77ahXLB101U O9nhxufgpAulbq8rsiYMETUk7nsGDQS58qnCLmN6R254O9rstVF1pVPL81Ix2raFh7 i9l1+evbSv0WW/qKn22u6axirtGuSXWMsGL+tbu4WIsx1Bq1BzahKwg+30NFgKZWHo WCb/be+xOG7UQ== From: "Rafael J. Wysocki" To: Linux ACPI Cc: LKML , Andy Shevchenko Subject: [PATCH v1 4/4] ACPI: glue: Skip devices with no type in acpi_device_notify() Date: Thu, 10 Sep 2026 19:56:22 +0200 Message-ID: <2078562.PYKUYFuaPT@rafael.j.wysocki> Organization: Linux Kernel Development - Intel In-Reply-To: <12995802.O9o76ZdvQC@rafael.j.wysocki> References: <12995802.O9o76ZdvQC@rafael.j.wysocki> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: "Rafael J. Wysocki" Since all of the users of struct acpi_bus_type use the device type for matching, devices without a type will not be matched by any of them, so they can be skipped early in acpi_device_notify(). Update the code accordingly. Signed-off-by: Rafael J. Wysocki --- drivers/acpi/glue.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/acpi/glue.c b/drivers/acpi/glue.c index 1981ebfb5ce0..c53f3d86254a 100644 --- a/drivers/acpi/glue.c +++ b/drivers/acpi/glue.c @@ -63,6 +63,9 @@ static struct acpi_device *acpi_companion_lookup(struct d= evice *dev) { struct acpi_bus_type *type; =20 + if (!dev->type) + return NULL; + guard(rwsem_read)(&bus_type_sem); =20 list_for_each_entry(type, &bus_type_list, list) { --=20 2.51.0