From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Sinan Kaya <okaya@codeaurora.org>,
dmaengine <dmaengine@vger.kernel.org>,
"Rafael J . Wysocki" <rjw@rjwysocki.net>,
linux-acpi@vger.kernel.org
Cc: Sakari Ailus <sakari.ailus@linux.intel.com>,
Vinod Koul <vinod.koul@intel.com>
Subject: [v2,2/6] ACPI / bus: Do not traverse through non-existed device table
Date: Thu, 01 Feb 2018 22:45:21 +0200 [thread overview]
Message-ID: <1517517921.7000.1447.camel@linux.intel.com> (raw)
On Thu, 2018-02-01 at 22:40 +0200, Andy Shevchenko wrote:
> On Thu, 2018-02-01 at 15:32 -0500, Sinan Kaya wrote:
> > On 2/1/2018 3:20 PM, Andy Shevchenko wrote:
> > > When __acpi_match_device() is called it would be possible to have
> > > ACPI ID table a MULL pointer. To avoid potential dereference,
> >
> > NULL
>
> Thanks, will fix later.
>
> > Why not bail out here immediately if ids is null?
>
> Because of the code which wasn't in context of this patch.
>
> See also patch 1 in the series.
>
> It's about how acpi_driver_match_device() uses it.
Btw, it makes device_get_match_data() to work properly on PRP0001 kind
of devices.
next reply other threads:[~2018-02-01 20:45 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-01 20:45 Andy Shevchenko [this message]
-- strict thread matches above, loose matches on Subject: below --
2018-02-05 15:59 [v2,2/6] ACPI / bus: Do not traverse through non-existed device table Andy Shevchenko
2018-02-05 15:56 Andy Shevchenko
2018-02-04 7:18 Rafael J. Wysocki
2018-02-01 20:40 Andy Shevchenko
2018-02-01 20:32 Sinan Kaya
2018-02-01 20:20 Andy Shevchenko
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