From: Greg KH <gregkh@linuxfoundation.org>
To: Dmitry Antipov <dmantipov@yandex.ru>
Cc: Michael Jamet <michael.jamet@intel.com>,
linux-usb@vger.kernel.org, lvc-project@linuxtesting.org
Subject: Re: [PATCH] thunderbolt: handle possible NULL pointer from get_device()
Date: Fri, 9 Jun 2023 09:46:44 +0200 [thread overview]
Message-ID: <2023060903-unashamed-proactive-8bc9@gregkh> (raw)
In-Reply-To: <d68c759a-e44c-0c6f-03cc-1e07418424eb@yandex.ru>
On Fri, Jun 09, 2023 at 10:15:36AM +0300, Dmitry Antipov wrote:
> On 6/9/23 09:30, Greg KH wrote:
>
> > Sorry, but how can that happen?
>
> Hmmm.. there should be a complete mess in the device tree (e.g. passing
> root device with no parent where the regular device is expected). If
> you're sure that this doesn't worth checking then please disregard this.
Again, how did you test this?
And yes, the driver model guarantees that a child can never have a NULL
parent (except for the root device, but that's a different story...)
thanks,
greg k-h
next prev parent reply other threads:[~2023-06-09 7:47 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-09 6:16 [PATCH] thunderbolt: handle possible NULL pointer from get_device() Dmitry Antipov
2023-06-09 6:30 ` Greg KH
2023-06-09 7:15 ` Dmitry Antipov
2023-06-09 7:46 ` Greg KH [this message]
2023-06-09 8:05 ` Dmitry Antipov
2023-06-09 8:20 ` Greg KH
2023-06-09 9:19 ` Dmitry Antipov
2023-06-09 9:30 ` Greg KH
2023-06-09 8:32 ` [lvc-project] " Alexey Khoroshilov
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