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From: Sergey Ryazanov <>
To: Andy Shevchenko <>
Cc: Loic Poulain <>,
	"David S. Miller" <>,
	Network Development <>,
	open list <>,
	Johannes Berg <>,
	Jakub Kicinski <>
Subject: Re: [PATCH v1 1/1] wwan: core: Avoid returning error pointer from wwan_create_dev()
Date: Fri, 6 Aug 2021 12:13:15 +0300	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

Hello Andy,

On Fri, Aug 6, 2021 at 12:08 PM Andy Shevchenko
<> wrote:
> On Thu, Aug 05, 2021 at 09:53:57PM +0200, Loic Poulain wrote:
>> On Thu, 5 Aug 2021 at 20:38, Andy Shevchenko
>> <> wrote:
>>> wwan_create_dev() is expected to return either valid pointer or NULL,
>>> In some cases it might return the error pointer. Prevent this by converting
>>> it to NULL after wwan_dev_get_by_parent().
>> wwan_create_dev is called both from wwan_register_ops() and
>> wwan_create_port(), one using IS_ERR and the other using NULL testing,
>> they should be aligned as well.
> Ah, good catch!
> I just sent v2, but eventually I have decided to switch to error pointer since
> it seems the most used pattern in the code.

I agree that returning the error pointer is a good solution here.
Thank you for the fix.


      reply	other threads:[~2021-08-06  9:13 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-05 18:31 Andy Shevchenko
2021-08-05 19:53 ` Loic Poulain
2021-08-06  9:07   ` Andy Shevchenko
2021-08-06  9:13     ` Sergey Ryazanov [this message]

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