diff mbox series

kunit: device: Fix a NULL vs IS_ERR() check in init()

Message ID dd938a86-38d9-4d62-abd0-1df80395fbbd@moroto.mountain (mailing list archive)
State Accepted
Commit 083974ebb8fc65978d6cacd1bcfe9158d6234b98
Delegated to: Brendan Higgins
Headers show
Series kunit: device: Fix a NULL vs IS_ERR() check in init() | expand

Commit Message

Dan Carpenter Jan. 10, 2024, 6:55 p.m. UTC
The root_device_register() function does not return NULL, it returns
error pointers.  Fix the check to match.

Fixes: d03c720e03bd ("kunit: Add APIs for managing devices")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
---
 lib/kunit/device.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Comments

Rae Moar Jan. 10, 2024, 9:09 p.m. UTC | #1
On Wed, Jan 10, 2024 at 1:55 PM Dan Carpenter <dan.carpenter@linaro.org> wrote:
>
> The root_device_register() function does not return NULL, it returns
> error pointers.  Fix the check to match.
>
> Fixes: d03c720e03bd ("kunit: Add APIs for managing devices")
> Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>

This change looks good to me! We could check for IS_ERR_OR_NULL
instead but this change is more correct and is also how others check
root_device_register().

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

Thanks!
Rae


> ---
>  lib/kunit/device.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/lib/kunit/device.c b/lib/kunit/device.c
> index f5371287b375..074c6dd2e36a 100644
> --- a/lib/kunit/device.c
> +++ b/lib/kunit/device.c
> @@ -45,8 +45,8 @@ int kunit_bus_init(void)
>         int error;
>
>         kunit_bus_device = root_device_register("kunit");
> -       if (!kunit_bus_device)
> -               return -ENOMEM;
> +       if (IS_ERR(kunit_bus_device))
> +               return PTR_ERR(kunit_bus_device);
>
>         error = bus_register(&kunit_bus_type);
>         if (error)
> --
> 2.43.0
>
> --
> You received this message because you are subscribed to the Google Groups "KUnit Development" group.
> To unsubscribe from this group and stop receiving emails from it, send an email to kunit-dev+unsubscribe@googlegroups.com.
> To view this discussion on the web visit https://groups.google.com/d/msgid/kunit-dev/dd938a86-38d9-4d62-abd0-1df80395fbbd%40moroto.mountain.
David Gow Jan. 11, 2024, 11:42 p.m. UTC | #2
On Thu, 11 Jan 2024 at 02:55, Dan Carpenter <dan.carpenter@linaro.org> wrote:
>
> The root_device_register() function does not return NULL, it returns
> error pointers.  Fix the check to match.
>
> Fixes: d03c720e03bd ("kunit: Add APIs for managing devices")
> Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
> ---

Thanks for catching this.

Reviewed-by: David Gow <davidgow@google.com>

Cheers,
-- David
diff mbox series

Patch

diff --git a/lib/kunit/device.c b/lib/kunit/device.c
index f5371287b375..074c6dd2e36a 100644
--- a/lib/kunit/device.c
+++ b/lib/kunit/device.c
@@ -45,8 +45,8 @@  int kunit_bus_init(void)
 	int error;
 
 	kunit_bus_device = root_device_register("kunit");
-	if (!kunit_bus_device)
-		return -ENOMEM;
+	if (IS_ERR(kunit_bus_device))
+		return PTR_ERR(kunit_bus_device);
 
 	error = bus_register(&kunit_bus_type);
 	if (error)