linux-kernel - Re: [PATCH v1] drivers/acpi/x86: check return null pointer from acpi_evaluate

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Message-ID: <YwxLCtMCncW3j7iE@black.fi.intel.com>
Date:   Mon, 29 Aug 2022 08:13:46 +0300
From:   Mika Westerberg <mika.westerberg@...ux.intel.com>
To:     Li Zhong <floridsleeves@...il.com>
Cc:     linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org,
        rafael@...nel.org, lenb@...nel.org, mario.limonciello@....com,
        hdegoede@...hat.com, Shyam-sundar.S-k@....com, nakato@...ato.io
Subject: Re: [PATCH v1] drivers/acpi/x86: check return null pointer from
 acpi_evaluate_dsm()

Hi,

On Sun, Aug 28, 2022 at 01:51:20PM -0700, Li Zhong wrote:
> From: lily <floridsleeves@...il.com>
> 
> Check return value from acpi_evaluate_dsm(). Only do ACPI_FREE() when
> out_obj is not NULL pointers.

ACPI_FREE() expands to kfree() and that allows NULL pointers so I don't
think this patch is necessary.