From patchwork Tue Jan 30 00:45:06 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stephen Boyd X-Patchwork-Id: 13536608 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 8617D3716F; Tue, 30 Jan 2024 00:45:15 +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=1706575515; cv=none; b=kE+xAXOnLgozS9uHXvZlFkRTCGpECq8K6RvW/Z+BBwsd7461/0TzulTNxXS9bxBebdEVG/2gS4GtCVsYJR2zbwmZbasRNsJzO0zYYbqEPnNyUPRIn0bRQ88zhjJotEpVRNDqVIMV8WEpFRnAhucnyMufWVkN0fAyVHXzhZ2Y+CM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706575515; c=relaxed/simple; bh=PiweXFroDHF7yXaa82SMFRXH/FDbm1RzgiHTih6bLA8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=LVlxJzGg/RC1xTQiLKm8w98HNxbY/KrcpkoLEA5heqfwXizIuwy3U+waXDa0/X0PRxhisHMGHaAv4KQ83j6v/7+DwJ5zFVfsj0bR/TrGDezEPgCauRPOjvvSomJQyFMMcV1eneDWZemjRdjC+VY42mNirJGlTTp2AhvUHw62U7s= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=TzGOXf0x; 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="TzGOXf0x" Received: by smtp.kernel.org (Postfix) with ESMTPSA id DB6E4C43609; Tue, 30 Jan 2024 00:45:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1706575515; bh=PiweXFroDHF7yXaa82SMFRXH/FDbm1RzgiHTih6bLA8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=TzGOXf0xtEnuBMKuXJA6vqerJOp0D0uIDNQFWdGOH3l33XbaHnYJ9I3mYGODL2xxv FvYYJep2tflHq4V0UcqCEB2qc3z3xiIyVM65MQ8F12kGMHIq0zhX5iTNd0OwzHK3uJ +D5rvAm5GRr5SPCQ7vSVXDIJvzCWbXCZx1R6KdhL5mC8W37TCpLc6jZVKmF9iSNWQJ QLggfDM/lA5RPUFdkYhPg/HyXl5R+4b4rdKWSsuxduScfg/a0lFoiNIhC2yqRQoXdj ajXgXI0puNc540MbLYhob5cDaQwc0mvu8sBP/DHUYcm2YixEL2Rpls3ikHYNE9Xsnw cWSsF2qgM1ovg== 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 v2 7/7] of: Add KUnit test to confirm DTB is loaded Date: Mon, 29 Jan 2024 16:45:06 -0800 Message-ID: <20240130004508.1700335-8-sboyd@kernel.org> X-Mailer: git-send-email 2.43.0.429.g432eaa2c6b-goog In-Reply-To: <20240130004508.1700335-1-sboyd@kernel.org> References: <20240130004508.1700335-1-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 --- 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");