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SubjectRe: [PATCH] of: Kconfig: Let OF_UNITTEST depend on "I2C=y" and "I2C_MUX=y"
Date
On Wednesday 04 March 2015 16:04:23 Geert Uytterhoeven wrote:
> > - depends on OF_IRQ && OF_EARLY_FLATTREE
> > + depends on OF_IRQ && OF_EARLY_FLATTREE && I2C=y && I2C_MUX=y
>
> ... I think it would be better to replace "#if IS_ENABLED(CONFIG_XXX)" by
> "#ifdef CONFIG_XXX" in drivers/of/unittest.c instead.
>

Agreed. I came across the same bug and came to the same conclusion as you.

How about this:

8<----
Subject: of: unittest: fix I2C dependency

The unittest fails to link if I2C or I2C_MUX is a loadable module:

drivers/built-in.o: In function `selftest_i2c_mux_remove':
unittest.c:(.text+0xb0ce4): undefined reference to `i2c_del_mux_adapter'

This changes the newly added IS_ENABLED() checks to use IS_BUILTIN()
instead, which evaluates to false if the other driver is a module.

Reported-by: Chen Gang <gang.chen.5i5j@gmail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: d5e75500ca401 ("of: unitest: Add I2C overlay unit tests.")

diff --git a/drivers/of/unittest.c b/drivers/of/unittest.c
index 0cf9a236d438..8daa49206c36 100644
--- a/drivers/of/unittest.c
+++ b/drivers/of/unittest.c
@@ -979,7 +979,7 @@ static int of_path_platform_device_exists(const char *path)
return pdev != NULL;
}

-#if IS_ENABLED(CONFIG_I2C)
+#if IS_BUILTIN(CONFIG_I2C)

/* get the i2c client device instantiated at the path */
static struct i2c_client *of_path_to_i2c_client(const char *path)
@@ -1445,7 +1445,7 @@ static void of_selftest_overlay_11(void)
return;
}

-#if IS_ENABLED(CONFIG_I2C) && IS_ENABLED(CONFIG_OF_OVERLAY)
+#if IS_BUILTIN(CONFIG_I2C) && IS_ENABLED(CONFIG_OF_OVERLAY)

struct selftest_i2c_bus_data {
struct platform_device *pdev;
@@ -1584,7 +1584,7 @@ static struct i2c_driver selftest_i2c_dev_driver = {
.id_table = selftest_i2c_dev_id,
};

-#if IS_ENABLED(CONFIG_I2C_MUX)
+#if IS_BUILTIN(CONFIG_I2C_MUX)

struct selftest_i2c_mux_data {
int nchans;
@@ -1695,7 +1695,7 @@ static int of_selftest_overlay_i2c_init(void)
"could not register selftest i2c bus driver\n"))
return ret;

-#if IS_ENABLED(CONFIG_I2C_MUX)
+#if IS_BUILTIN(CONFIG_I2C_MUX)
ret = i2c_add_driver(&selftest_i2c_mux_driver);
if (selftest(ret == 0,
"could not register selftest i2c mux driver\n"))
@@ -1707,7 +1707,7 @@ static int of_selftest_overlay_i2c_init(void)

static void of_selftest_overlay_i2c_cleanup(void)
{
-#if IS_ENABLED(CONFIG_I2C_MUX)
+#if IS_BUILTIN(CONFIG_I2C_MUX)
i2c_del_driver(&selftest_i2c_mux_driver);
#endif
platform_driver_unregister(&selftest_i2c_bus_driver);
@@ -1814,7 +1814,7 @@ static void __init of_selftest_overlay(void)
of_selftest_overlay_10();
of_selftest_overlay_11();

-#if IS_ENABLED(CONFIG_I2C)
+#if IS_BUILTIN(CONFIG_I2C)
if (selftest(of_selftest_overlay_i2c_init() == 0, "i2c init failed\n"))
goto out;



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