linux-kernel - Re: [PATCH] kunit: Fix a NULL vs IS

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Date: Wed, 10 Jan 2024 15:47:34 -0500
From: Rae Moar <rmoar@...gle.com>
To: Dan Carpenter <dan.carpenter@...aro.org>
Cc: Brendan Higgins <brendan.higgins@...ux.dev>, David Gow <davidgow@...gle.com>, 
	linux-kselftest@...r.kernel.org, kunit-dev@...glegroups.com, 
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: Re: [PATCH] kunit: Fix a NULL vs IS_ERR() bug

On Wed, Jan 10, 2024 at 1:55 PM Dan Carpenter <dan.carpenter@...aroorg> wrote:
>
> The kunit_device_register() function doesn't return NULL, it returns
> error pointers.  Change the KUNIT_ASSERT_NOT_NULL() to check for
> ERR_OR_NULL().
>
> Fixes: d03c720e03bd ("kunit: Add APIs for managing devices")
> Signed-off-by: Dan Carpenter <dan.carpenter@...aro.org>

This change looks good to me! Thanks!
-Rae

Reviewed-by: Rae Moar <rmoar@...gle.com>

> ---
> It's a pity that there isn't a KUNIT_ASSERT_NOT_ERR_PTR() macro...
>
>  lib/kunit/kunit-test.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/lib/kunit/kunit-test.c b/lib/kunit/kunit-test.c
> index c4259d910356..f7980ef236a3 100644
> --- a/lib/kunit/kunit-test.c
> +++ b/lib/kunit/kunit-test.c
> @@ -720,7 +720,7 @@ static void kunit_device_cleanup_test(struct kunit *test)
>         long action_was_run = 0;
>
>         test_device = kunit_device_register(test, "my_device");
> -       KUNIT_ASSERT_NOT_NULL(test, test_device);
> +       KUNIT_ASSERT_NOT_ERR_OR_NULL(test, test_device);
>
>         /* Add an action to verify cleanup. */
>         devm_add_action(test_device, test_dev_action, &action_was_run);
> --
> 2.43.0
>
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