overflow: Replace fake root_device with kunit_device

Using struct root_device to create fake devices for tests is something
of a hack. The new struct kunit_device is meant for this purpose, so use
it instead.

Reviewed-by: Matti Vaittinen <mazziesaccount@gmail.com>
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David Gow <davidgow@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>

diff --git a/lib/overflow_kunit.c b/lib/overflow_kunit.c
index 34db0b3aa502346bcc3bb339c19c06bf128e035c..c527f6b75789462d7f57606eef241aeb3ef3718f 100644 (file)
--- a/lib/overflow_kunit.c
+++ b/lib/overflow_kunit.c
@@ -6,6 +6,7 @@
  */
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
+#include <kunit/device.h>
 #include <kunit/test.h>
 #include <linux/device.h>
 #include <linux/kernel.h>
@@ -618,7 +619,7 @@ static void overflow_allocation_test(struct kunit *test)
 } while (0)
 
        /* Create dummy device for devm_kmalloc()-family tests. */
-       dev = root_device_register(device_name);
+       dev = kunit_device_register(test, device_name);
        KUNIT_ASSERT_FALSE_MSG(test, IS_ERR(dev),
                               "Cannot register test device\n");
 
@@ -634,8 +635,6 @@ static void overflow_allocation_test(struct kunit *test)
        check_allocation_overflow(devm_kmalloc);
        check_allocation_overflow(devm_kzalloc);
 
-       device_unregister(dev);
-
        kunit_info(test, "%d allocation overflow tests finished\n", count);
 #undef check_allocation_overflow
 }