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Subject[PATCH] of: unittest: make gpio overlay test dependent on CONFIG_OF_GPIO
Date
From: Frank Rowand <frank.rowand@sony.com>

Randconfig testing found compile errors in drivers/of/unittest.c if
CONFIG_GPIOLIB is not set because CONFIG_OF_GPIO depends on
CONFIG_GPIOLIB. Make the gpio overlay test depend on CONFIG_OF_GPIO.

No code is modified, it is only moved to a different location and
protected with #ifdef CONFIG_OF_GPIO. An empty
of_unittest_overlay_gpio() is added in the #else.

Reported-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Frank Rowand <frank.rowand@sony.com>
---
drivers/of/unittest.c | 465 ++++++++++++++++++++++++++------------------------
1 file changed, 238 insertions(+), 227 deletions(-)

diff --git a/drivers/of/unittest.c b/drivers/of/unittest.c
index 96ae8a762a9e..1e5a2e4d893e 100644
--- a/drivers/of/unittest.c
+++ b/drivers/of/unittest.c
@@ -61,86 +61,6 @@
#define EXPECT_END(level, fmt, ...) \
printk(level pr_fmt("EXPECT / : ") fmt, ##__VA_ARGS__)

-struct unittest_gpio_dev {
- struct gpio_chip chip;
-};
-
-static int unittest_gpio_chip_request_count;
-static int unittest_gpio_probe_count;
-static int unittest_gpio_probe_pass_count;
-
-static int unittest_gpio_chip_request(struct gpio_chip *chip, unsigned int offset)
-{
- unittest_gpio_chip_request_count++;
-
- pr_debug("%s(): %s %d %d\n", __func__, chip->label, offset,
- unittest_gpio_chip_request_count);
- return 0;
-}
-
-static int unittest_gpio_probe(struct platform_device *pdev)
-{
- struct unittest_gpio_dev *devptr;
- int ret;
-
- unittest_gpio_probe_count++;
-
- devptr = kzalloc(sizeof(*devptr), GFP_KERNEL);
- if (!devptr)
- return -ENOMEM;
-
- platform_set_drvdata(pdev, devptr);
-
- devptr->chip.of_node = pdev->dev.of_node;
- devptr->chip.label = "of-unittest-gpio";
- devptr->chip.base = -1; /* dynamic allocation */
- devptr->chip.ngpio = 5;
- devptr->chip.request = unittest_gpio_chip_request;
-
- ret = gpiochip_add_data(&devptr->chip, NULL);
-
- unittest(!ret,
- "gpiochip_add_data() for node @%pOF failed, ret = %d\n", devptr->chip.of_node, ret);
-
- if (!ret)
- unittest_gpio_probe_pass_count++;
- return ret;
-}
-
-static int unittest_gpio_remove(struct platform_device *pdev)
-{
- struct unittest_gpio_dev *gdev = platform_get_drvdata(pdev);
- struct device *dev = &pdev->dev;
- struct device_node *np = pdev->dev.of_node;
-
- dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
-
- if (!gdev)
- return -EINVAL;
-
- if (gdev->chip.base != -1)
- gpiochip_remove(&gdev->chip);
-
- platform_set_drvdata(pdev, NULL);
- kfree(pdev);
-
- return 0;
-}
-
-static const struct of_device_id unittest_gpio_id[] = {
- { .compatible = "unittest-gpio", },
- {}
-};
-
-static struct platform_driver unittest_gpio_driver = {
- .probe = unittest_gpio_probe,
- .remove = unittest_gpio_remove,
- .driver = {
- .name = "unittest-gpio",
- .of_match_table = of_match_ptr(unittest_gpio_id),
- },
-};
-
static void __init of_unittest_find_node_by_name(void)
{
struct device_node *np;
@@ -1588,6 +1508,244 @@ static int of_path_platform_device_exists(const char *path)
return pdev != NULL;
}

+#ifdef CONFIG_OF_GPIO
+
+struct unittest_gpio_dev {
+ struct gpio_chip chip;
+};
+
+static int unittest_gpio_chip_request_count;
+static int unittest_gpio_probe_count;
+static int unittest_gpio_probe_pass_count;
+
+static int unittest_gpio_chip_request(struct gpio_chip *chip, unsigned int offset)
+{
+ unittest_gpio_chip_request_count++;
+
+ pr_debug("%s(): %s %d %d\n", __func__, chip->label, offset,
+ unittest_gpio_chip_request_count);
+ return 0;
+}
+
+static int unittest_gpio_probe(struct platform_device *pdev)
+{
+ struct unittest_gpio_dev *devptr;
+ int ret;
+
+ unittest_gpio_probe_count++;
+
+ devptr = kzalloc(sizeof(*devptr), GFP_KERNEL);
+ if (!devptr)
+ return -ENOMEM;
+
+ platform_set_drvdata(pdev, devptr);
+
+ devptr->chip.of_node = pdev->dev.of_node;
+ devptr->chip.label = "of-unittest-gpio";
+ devptr->chip.base = -1; /* dynamic allocation */
+ devptr->chip.ngpio = 5;
+ devptr->chip.request = unittest_gpio_chip_request;
+
+ ret = gpiochip_add_data(&devptr->chip, NULL);
+
+ unittest(!ret,
+ "gpiochip_add_data() for node @%pOF failed, ret = %d\n", devptr->chip.of_node, ret);
+
+ if (!ret)
+ unittest_gpio_probe_pass_count++;
+ return ret;
+}
+
+static int unittest_gpio_remove(struct platform_device *pdev)
+{
+ struct unittest_gpio_dev *gdev = platform_get_drvdata(pdev);
+ struct device *dev = &pdev->dev;
+ struct device_node *np = pdev->dev.of_node;
+
+ dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
+
+ if (!gdev)
+ return -EINVAL;
+
+ if (gdev->chip.base != -1)
+ gpiochip_remove(&gdev->chip);
+
+ platform_set_drvdata(pdev, NULL);
+ kfree(pdev);
+
+ return 0;
+}
+
+static const struct of_device_id unittest_gpio_id[] = {
+ { .compatible = "unittest-gpio", },
+ {}
+};
+
+static struct platform_driver unittest_gpio_driver = {
+ .probe = unittest_gpio_probe,
+ .remove = unittest_gpio_remove,
+ .driver = {
+ .name = "unittest-gpio",
+ .of_match_table = of_match_ptr(unittest_gpio_id),
+ },
+};
+
+static void __init of_unittest_overlay_gpio(void)
+{
+ int chip_request_count;
+ int probe_pass_count;
+ int ret;
+
+ /*
+ * tests: apply overlays before registering driver
+ * Similar to installing a driver as a module, the
+ * driver is registered after applying the overlays.
+ *
+ * - apply overlay_gpio_01
+ * - apply overlay_gpio_02a
+ * - apply overlay_gpio_02b
+ * - register driver
+ *
+ * register driver will result in
+ * - probe and processing gpio hog for overlay_gpio_01
+ * - probe for overlay_gpio_02a
+ * - processing gpio for overlay_gpio_02b
+ */
+
+ probe_pass_count = unittest_gpio_probe_pass_count;
+ chip_request_count = unittest_gpio_chip_request_count;
+
+ /*
+ * overlay_gpio_01 contains gpio node and child gpio hog node
+ * overlay_gpio_02a contains gpio node
+ * overlay_gpio_02b contains child gpio hog node
+ */
+
+ unittest(overlay_data_apply("overlay_gpio_01", NULL),
+ "Adding overlay 'overlay_gpio_01' failed\n");
+
+ unittest(overlay_data_apply("overlay_gpio_02a", NULL),
+ "Adding overlay 'overlay_gpio_02a' failed\n");
+
+ unittest(overlay_data_apply("overlay_gpio_02b", NULL),
+ "Adding overlay 'overlay_gpio_02b' failed\n");
+
+ /*
+ * messages are the result of the probes, after the
+ * driver is registered
+ */
+
+ EXPECT_BEGIN(KERN_INFO,
+ "GPIO line <<int>> (line-B-input) hogged as input\n");
+
+ EXPECT_BEGIN(KERN_INFO,
+ "GPIO line <<int>> (line-A-input) hogged as input\n");
+
+ ret = platform_driver_register(&unittest_gpio_driver);
+ if (unittest(ret == 0, "could not register unittest gpio driver\n"))
+ return;
+
+ EXPECT_END(KERN_INFO,
+ "GPIO line <<int>> (line-A-input) hogged as input\n");
+ EXPECT_END(KERN_INFO,
+ "GPIO line <<int>> (line-B-input) hogged as input\n");
+
+ unittest(probe_pass_count + 2 == unittest_gpio_probe_pass_count,
+ "unittest_gpio_probe() failed or not called\n");
+
+ unittest(chip_request_count + 2 == unittest_gpio_chip_request_count,
+ "unittest_gpio_chip_request() called %d times (expected 1 time)\n",
+ unittest_gpio_chip_request_count - chip_request_count);
+
+ /*
+ * tests: apply overlays after registering driver
+ *
+ * Similar to a driver built-in to the kernel, the
+ * driver is registered before applying the overlays.
+ *
+ * overlay_gpio_03 contains gpio node and child gpio hog node
+ *
+ * - apply overlay_gpio_03
+ *
+ * apply overlay will result in
+ * - probe and processing gpio hog.
+ */
+
+ probe_pass_count = unittest_gpio_probe_pass_count;
+ chip_request_count = unittest_gpio_chip_request_count;
+
+ EXPECT_BEGIN(KERN_INFO,
+ "GPIO line <<int>> (line-D-input) hogged as input\n");
+
+ /* overlay_gpio_03 contains gpio node and child gpio hog node */
+
+ unittest(overlay_data_apply("overlay_gpio_03", NULL),
+ "Adding overlay 'overlay_gpio_03' failed\n");
+
+ EXPECT_END(KERN_INFO,
+ "GPIO line <<int>> (line-D-input) hogged as input\n");
+
+ unittest(probe_pass_count + 1 == unittest_gpio_probe_pass_count,
+ "unittest_gpio_probe() failed or not called\n");
+
+ unittest(chip_request_count + 1 == unittest_gpio_chip_request_count,
+ "unittest_gpio_chip_request() called %d times (expected 1 time)\n",
+ unittest_gpio_chip_request_count - chip_request_count);
+
+ /*
+ * overlay_gpio_04a contains gpio node
+ *
+ * - apply overlay_gpio_04a
+ *
+ * apply the overlay will result in
+ * - probe for overlay_gpio_04a
+ */
+
+ probe_pass_count = unittest_gpio_probe_pass_count;
+ chip_request_count = unittest_gpio_chip_request_count;
+
+ /* overlay_gpio_04a contains gpio node */
+
+ unittest(overlay_data_apply("overlay_gpio_04a", NULL),
+ "Adding overlay 'overlay_gpio_04a' failed\n");
+
+ unittest(probe_pass_count + 1 == unittest_gpio_probe_pass_count,
+ "unittest_gpio_probe() failed or not called\n");
+
+ /*
+ * overlay_gpio_04b contains child gpio hog node
+ *
+ * - apply overlay_gpio_04b
+ *
+ * apply the overlay will result in
+ * - processing gpio for overlay_gpio_04b
+ */
+
+ EXPECT_BEGIN(KERN_INFO,
+ "GPIO line <<int>> (line-C-input) hogged as input\n");
+
+ /* overlay_gpio_04b contains child gpio hog node */
+
+ unittest(overlay_data_apply("overlay_gpio_04b", NULL),
+ "Adding overlay 'overlay_gpio_04b' failed\n");
+
+ EXPECT_END(KERN_INFO,
+ "GPIO line <<int>> (line-C-input) hogged as input\n");
+
+ unittest(chip_request_count + 1 == unittest_gpio_chip_request_count,
+ "unittest_gpio_chip_request() called %d times (expected 1 time)\n",
+ unittest_gpio_chip_request_count - chip_request_count);
+}
+
+#else
+
+static void __init of_unittest_overlay_gpio(void)
+{
+ /* skip tests */
+}
+
+#endif
+
#if IS_BUILTIN(CONFIG_I2C)

/* get the i2c client device instantiated at the path */
@@ -2517,153 +2675,6 @@ static inline void of_unittest_overlay_i2c_15(void) { }

#endif

-static void __init of_unittest_overlay_gpio(void)
-{
- int chip_request_count;
- int probe_pass_count;
- int ret;
-
- /*
- * tests: apply overlays before registering driver
- * Similar to installing a driver as a module, the
- * driver is registered after applying the overlays.
- *
- * - apply overlay_gpio_01
- * - apply overlay_gpio_02a
- * - apply overlay_gpio_02b
- * - register driver
- *
- * register driver will result in
- * - probe and processing gpio hog for overlay_gpio_01
- * - probe for overlay_gpio_02a
- * - processing gpio for overlay_gpio_02b
- */
-
- probe_pass_count = unittest_gpio_probe_pass_count;
- chip_request_count = unittest_gpio_chip_request_count;
-
- /*
- * overlay_gpio_01 contains gpio node and child gpio hog node
- * overlay_gpio_02a contains gpio node
- * overlay_gpio_02b contains child gpio hog node
- */
-
- unittest(overlay_data_apply("overlay_gpio_01", NULL),
- "Adding overlay 'overlay_gpio_01' failed\n");
-
- unittest(overlay_data_apply("overlay_gpio_02a", NULL),
- "Adding overlay 'overlay_gpio_02a' failed\n");
-
- unittest(overlay_data_apply("overlay_gpio_02b", NULL),
- "Adding overlay 'overlay_gpio_02b' failed\n");
-
- /*
- * messages are the result of the probes, after the
- * driver is registered
- */
-
- EXPECT_BEGIN(KERN_INFO,
- "GPIO line <<int>> (line-B-input) hogged as input\n");
-
- EXPECT_BEGIN(KERN_INFO,
- "GPIO line <<int>> (line-A-input) hogged as input\n");
-
- ret = platform_driver_register(&unittest_gpio_driver);
- if (unittest(ret == 0, "could not register unittest gpio driver\n"))
- return;
-
- EXPECT_END(KERN_INFO,
- "GPIO line <<int>> (line-A-input) hogged as input\n");
- EXPECT_END(KERN_INFO,
- "GPIO line <<int>> (line-B-input) hogged as input\n");
-
- unittest(probe_pass_count + 2 == unittest_gpio_probe_pass_count,
- "unittest_gpio_probe() failed or not called\n");
-
- unittest(chip_request_count + 2 == unittest_gpio_chip_request_count,
- "unittest_gpio_chip_request() called %d times (expected 1 time)\n",
- unittest_gpio_chip_request_count - chip_request_count);
-
- /*
- * tests: apply overlays after registering driver
- *
- * Similar to a driver built-in to the kernel, the
- * driver is registered before applying the overlays.
- *
- * overlay_gpio_03 contains gpio node and child gpio hog node
- *
- * - apply overlay_gpio_03
- *
- * apply overlay will result in
- * - probe and processing gpio hog.
- */
-
- probe_pass_count = unittest_gpio_probe_pass_count;
- chip_request_count = unittest_gpio_chip_request_count;
-
- EXPECT_BEGIN(KERN_INFO,
- "GPIO line <<int>> (line-D-input) hogged as input\n");
-
- /* overlay_gpio_03 contains gpio node and child gpio hog node */
-
- unittest(overlay_data_apply("overlay_gpio_03", NULL),
- "Adding overlay 'overlay_gpio_03' failed\n");
-
- EXPECT_END(KERN_INFO,
- "GPIO line <<int>> (line-D-input) hogged as input\n");
-
- unittest(probe_pass_count + 1 == unittest_gpio_probe_pass_count,
- "unittest_gpio_probe() failed or not called\n");
-
- unittest(chip_request_count + 1 == unittest_gpio_chip_request_count,
- "unittest_gpio_chip_request() called %d times (expected 1 time)\n",
- unittest_gpio_chip_request_count - chip_request_count);
-
- /*
- * overlay_gpio_04a contains gpio node
- *
- * - apply overlay_gpio_04a
- *
- * apply the overlay will result in
- * - probe for overlay_gpio_04a
- */
-
- probe_pass_count = unittest_gpio_probe_pass_count;
- chip_request_count = unittest_gpio_chip_request_count;
-
- /* overlay_gpio_04a contains gpio node */
-
- unittest(overlay_data_apply("overlay_gpio_04a", NULL),
- "Adding overlay 'overlay_gpio_04a' failed\n");
-
- unittest(probe_pass_count + 1 == unittest_gpio_probe_pass_count,
- "unittest_gpio_probe() failed or not called\n");
-
- /*
- * overlay_gpio_04b contains child gpio hog node
- *
- * - apply overlay_gpio_04b
- *
- * apply the overlay will result in
- * - processing gpio for overlay_gpio_04b
- */
-
- EXPECT_BEGIN(KERN_INFO,
- "GPIO line <<int>> (line-C-input) hogged as input\n");
-
- /* overlay_gpio_04b contains child gpio hog node */
-
- unittest(overlay_data_apply("overlay_gpio_04b", NULL),
- "Adding overlay 'overlay_gpio_04b' failed\n");
-
- EXPECT_END(KERN_INFO,
- "GPIO line <<int>> (line-C-input) hogged as input\n");
-
- unittest(chip_request_count + 1 == unittest_gpio_chip_request_count,
- "unittest_gpio_chip_request() called %d times (expected 1 time)\n",
- unittest_gpio_chip_request_count - chip_request_count);
-}
-
static void __init of_unittest_overlay(void)
{
struct device_node *bus_np = NULL;
--
Frank Rowand <frank.rowand@sony.com>
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