From patchwork Fri Feb 2 19:59:08 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stephen Boyd X-Patchwork-Id: 13543337 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 EE9B1126F01; Fri, 2 Feb 2024 19:59:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706903957; cv=none; b=nzD4ffN0CepjBF+gTwe/lnMmHrrYGXVu7LLJ+I0KbU+5PqmCV3j7Fiwho06r7E86lzegfotTrDft72eeWoIH3AeEff5jZjx5rDt94mVcHqCu9jq2MlQPTmdURgQJRVBpHiGjRHWmmR3GVVaPoeqThK9DqPt4n9i640sg/4ZCLdM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706903957; c=relaxed/simple; bh=PiweXFroDHF7yXaa82SMFRXH/FDbm1RzgiHTih6bLA8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=lG22swlSyaidBABSLfN58GNfQpu5CNXjMMDY7I9h+PbrxzXGV53XzEOAdMLs/KF2t3E3EuyDxA6PxquCHK2L5kqrsmo3JDHdp1TNTyYIp9HZFLeBAREGKh79lvrqDZSbD9eMfhFkPJFcx/5WCXxKjJcUfl/kDvGoLS8DjIJHrek= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=LUsABn4B; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="LUsABn4B" Received: by smtp.kernel.org (Postfix) with ESMTPSA id F0422C43390; Fri, 2 Feb 2024 19:59:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1706903956; bh=PiweXFroDHF7yXaa82SMFRXH/FDbm1RzgiHTih6bLA8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LUsABn4BtEE+3rLzRs0MQ2C02aC4eRavx+NnUEigQIDN5hEhEZNBOQJZPL8COpFiE lorefdZOxB8OV+F2B33bLbZYuCDULzTivEsiui+momrj0H+Q4M8bILqL6UXIb2VZG8 2a4s2d8yNcFame9bG1gYjm7fRnJ0b1loqO9DK41wYC40o8K8MLf+BOFe1Y+PHMhias njRXktKCexQ9Yv8x4+YTqiHhB31aR091ZwIt79dQ9s29u1QvLULGcboC0mabkoiOis bdoKOrdCx2OSnf4HWEb5yIMklX06Ug8ejLsbsHsTP/c7+WG2Qd9+ZAF9Hq4PyzUetv l0y+61kYAJv5Q== From: Stephen Boyd To: Rob Herring Cc: linux-kernel@vger.kernel.org, patches@lists.linux.dev, linux-um@lists.infradead.org, linux-arm-kernel@lists.infradead.org, kunit-dev@googlegroups.com, linux-kselftest@vger.kernel.org, devicetree@vger.kernel.org, Frank Rowand , David Gow , Brendan Higgins Subject: [PATCH v3 7/7] of: Add KUnit test to confirm DTB is loaded Date: Fri, 2 Feb 2024 11:59:08 -0800 Message-ID: <20240202195909.3458162-8-sboyd@kernel.org> X-Mailer: git-send-email 2.43.0.594.gd9cf4e227d-goog In-Reply-To: <20240202195909.3458162-1-sboyd@kernel.org> References: <20240202195909.3458162-1-sboyd@kernel.org> Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Add a KUnit test that confirms a DTB has been loaded, i.e. there is a root node, and that the of_have_populated_dt() API works properly. Cc: Rob Herring Cc: Frank Rowand Cc: David Gow Cc: Brendan Higgins Signed-off-by: Stephen Boyd Reviewed-by: David Gow --- drivers/of/.kunitconfig | 3 +++ drivers/of/Kconfig | 9 ++++++++ drivers/of/Makefile | 2 ++ drivers/of/of_test.c | 48 +++++++++++++++++++++++++++++++++++++++++ 4 files changed, 62 insertions(+) create mode 100644 drivers/of/.kunitconfig create mode 100644 drivers/of/of_test.c diff --git a/drivers/of/.kunitconfig b/drivers/of/.kunitconfig new file mode 100644 index 000000000000..5a8fee11978c --- /dev/null +++ b/drivers/of/.kunitconfig @@ -0,0 +1,3 @@ +CONFIG_KUNIT=y +CONFIG_OF=y +CONFIG_OF_KUNIT_TEST=y diff --git a/drivers/of/Kconfig b/drivers/of/Kconfig index 17733285b415..53d1b5dd89e8 100644 --- a/drivers/of/Kconfig +++ b/drivers/of/Kconfig @@ -37,6 +37,15 @@ config OF_UNITTEST If unsure, say N here. This option is not safe to enable. +config OF_KUNIT_TEST + tristate "Devicetree KUnit Test" if !KUNIT_ALL_TESTS + depends on KUNIT + default KUNIT_ALL_TESTS + help + This option builds KUnit unit tests for device tree infrastructure. + + If unsure, say N here, but this option is safe to enable. + config OF_ALL_DTBS bool "Build all Device Tree Blobs" depends on COMPILE_TEST diff --git a/drivers/of/Makefile b/drivers/of/Makefile index df305348d1cb..251d33532148 100644 --- a/drivers/of/Makefile +++ b/drivers/of/Makefile @@ -19,4 +19,6 @@ obj-y += kexec.o endif endif +obj-$(CONFIG_OF_KUNIT_TEST) += of_test.o + obj-$(CONFIG_OF_UNITTEST) += unittest-data/ diff --git a/drivers/of/of_test.c b/drivers/of/of_test.c new file mode 100644 index 000000000000..71a767b42b43 --- /dev/null +++ b/drivers/of/of_test.c @@ -0,0 +1,48 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * KUnit tests for OF APIs + */ +#include +#include + +#include + +/* + * Test that the root node "/" can be found by path. + */ +static void dtb_root_node_found_by_path(struct kunit *test) +{ + struct device_node *np; + + np = of_find_node_by_path("/"); + KUNIT_EXPECT_NOT_ERR_OR_NULL(test, np); + of_node_put(np); +} + +/* + * Test that the 'of_root' global variable is always populated when DT code is + * enabled. + */ +static void dtb_root_node_populates_of_root(struct kunit *test) +{ + KUNIT_EXPECT_NOT_ERR_OR_NULL(test, of_root); +} + +static struct kunit_case dtb_test_cases[] = { + KUNIT_CASE(dtb_root_node_found_by_path), + KUNIT_CASE(dtb_root_node_populates_of_root), + {} +}; + +/* + * Test suite to confirm a DTB is loaded. + */ +static struct kunit_suite dtb_suite = { + .name = "dtb", + .test_cases = dtb_test_cases, +}; + +kunit_test_suites( + &dtb_suite, +); +MODULE_LICENSE("GPL");