From patchwork Sat Nov 9 22:00:28 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans de Goede X-Patchwork-Id: 13869714 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (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 42CBF42069 for ; Sat, 9 Nov 2024 22:00:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731189647; cv=none; b=F+4MP1trAKu9J9lI1WPRSWB7FBRFu33Cp6hjk0WTmW+R5ab0S5Iz2YjXEtu69WctjmFYUjOpGlhLKkh6JD5lwkKQOxebyUIZN/Qw5PMOUeNfimJ6iRakUuX9/U38GQxuU0E/xbzhkQ/mdQCfyzwlS/2yzn2/kCLiTrvxHnmqDhI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731189647; c=relaxed/simple; bh=y0A6f5FOKVQea5gb0AK39dVevQmN3je9X4ws7cs4Tno=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=OWOHdZJ+qGD0rqQkjIg8ZsLx0ZeOihKFkuBSz2gPSjNYzZjbSB9TP9YiM17Tnt1ATXUDIsurX/aZ1+Vzg6bozCYVNpiZrfAd61ApEnrDCHL/k6hYzjlNaE/seMRbjYTeWZag1n9EdnNSy/ARWN3b3WhmKQmNz5CpRiAB8NmxoIM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=Nx/rG8Rn; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="Nx/rG8Rn" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1731189644; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=2QRF/ZK4oIb1Qn5vFHGBEqnGAFd6pFENWUVKkX2W1lU=; b=Nx/rG8RnZk1B00yVKx7eTVmkKCMCydSOWYcepPC5laR3XbXmujmYuVCzGRA1yWiJuDVGGJ 5o18/yz14KLRjZIucWd27f5zH+NjNrl0m2HQFm5WghfsDWOcBRi6Th8WAYwxblBWLFYUIF U64Rzat2MkrPntZDTTXUTuqQPTTREFU= Received: from mx-prod-mc-03.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-605-Qa6RDUxnNFORFQ0HtU5oNw-1; Sat, 09 Nov 2024 17:00:40 -0500 X-MC-Unique: Qa6RDUxnNFORFQ0HtU5oNw-1 X-Mimecast-MFC-AGG-ID: Qa6RDUxnNFORFQ0HtU5oNw Received: from mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.15]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id A3F7C19560AA; Sat, 9 Nov 2024 22:00:39 +0000 (UTC) Received: from localhost.localdomain (unknown [10.39.192.21]) by mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 2451B1956089; Sat, 9 Nov 2024 22:00:37 +0000 (UTC) From: Hans de Goede To: "Rafael J . Wysocki" Cc: Hans de Goede , linux-acpi@vger.kernel.org Subject: [PATCH] ACPI: x86: Add adev NULL check to acpi_quirk_skip_serdev_enumeration() Date: Sat, 9 Nov 2024 23:00:28 +0100 Message-ID: <20241109220028.83047-1-hdegoede@redhat.com> Precedence: bulk X-Mailing-List: linux-acpi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.0 on 10.30.177.15 acpi_dev_hid_match() does not check for adev == NULL, dereferencing it unconditional. Add a check for adev being NULL before calling acpi_dev_hid_match(). At the moment acpi_quirk_skip_serdev_enumeration() is never called with a controller_parent without an ACPI companion, but better safe than sorry. Signed-off-by: Hans de Goede --- drivers/acpi/x86/utils.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/acpi/x86/utils.c b/drivers/acpi/x86/utils.c index 3eec889d4f5f..423565c31d5e 100644 --- a/drivers/acpi/x86/utils.c +++ b/drivers/acpi/x86/utils.c @@ -536,7 +536,7 @@ int acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *s * Set skip to true so that the tty core creates a serdev ctrl device. * The backlight driver will manually create the serdev client device. */ - if (acpi_dev_hid_match(adev, "DELL0501")) { + if (adev && acpi_dev_hid_match(adev, "DELL0501")) { *skip = true; /* * Create a platform dev for dell-uart-backlight to bind to.