Commit 82c0f589 authored by Rob Herring's avatar Rob Herring Committed by Grant Likely
Browse files

of: selftest: add deferred probe interrupt test 



Signed-off-by: default avatarRob Herring <robh@kernel.org>
[grant.likely: fixed failure when root node specifies the interrupt parent]
Signed-off-by: default avatarGrant Likely <grant.likely@linaro.org>
parent ae107d06

drivers/of/selftest.c

+32 −0
Original line number Diff line number Diff line
@@ -10,6 +10,7 @@ 
#include <linux/module.h>

#include <linux/of.h>

#include <linux/of_irq.h>

#include <linux/of_platform.h>

#include <linux/list.h>

#include <linux/mutex.h>

#include <linux/slab.h>
@@ -427,6 +428,36 @@ static void __init of_selftest_match_node(void) 
	}

}



static void __init of_selftest_platform_populate(void)

{

	int irq;

	struct device_node *np;

	struct platform_device *pdev;



	np = of_find_node_by_path("/testcase-data");

	of_platform_populate(np, of_default_bus_match_table, NULL, NULL);



	/* Test that a missing irq domain returns -EPROBE_DEFER */

	np = of_find_node_by_path("/testcase-data/testcase-device1");

	pdev = of_find_device_by_node(np);

	if (!pdev)

		selftest(0, "device 1 creation failed\n");

	irq = platform_get_irq(pdev, 0);

	if (irq != -EPROBE_DEFER)

		selftest(0, "device deferred probe failed - %d\n", irq);



	/* Test that a parsing failure does not return -EPROBE_DEFER */

	np = of_find_node_by_path("/testcase-data/testcase-device2");

	pdev = of_find_device_by_node(np);

	if (!pdev)

		selftest(0, "device 2 creation failed\n");

	irq = platform_get_irq(pdev, 0);

	if (irq >= 0 || irq == -EPROBE_DEFER)

		selftest(0, "device parsing error failed - %d\n", irq);



	selftest(1, "passed");

}



static int __init of_selftest(void)

{

	struct device_node *np;
@@ -445,6 +476,7 @@ static int __init of_selftest(void) 
	of_selftest_parse_interrupts();

	of_selftest_parse_interrupts_extended();

	of_selftest_match_node();

	of_selftest_platform_populate();

	pr_info("end of selftest - %i passed, %i failed\n",

		selftest_results.passed, selftest_results.failed);

	return 0;

drivers/of/testcase-data/tests-interrupts.dtsi

+13 −0
Original line number Diff line number Diff line
@@ -54,5 +54,18 @@ 
						      <&test_intmap1 1 2>;

			};

		};



		testcase-device1 {

			compatible = "testcase-device";

			interrupt-parent = <&test_intc0>;

			interrupts = <1>;

		};



		testcase-device2 {

			compatible = "testcase-device";

			interrupt-parent = <&test_intc2>;

			interrupts = <1>; /* invalid specifier - too short */

		};

	};



};