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Date:   Tue, 7 Jan 2020 10:52:57 +0100
From:   "Rafael J. Wysocki" <rafael@...nel.org>
To:     Masahiro Yamada <masahiroy@...nel.org>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Julia Lawall <julia.lawall@...6.fr>,
        ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        linux-clk <linux-clk@...r.kernel.org>,
        linux-crypto@...r.kernel.org, linux-gpio@...r.kernel.org,
        linux-i2c <linux-i2c@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-mtd@...ts.infradead.org, netdev <netdev@...r.kernel.org>,
        "moderated list:SOUND - SOC LAYER / DYNAMIC AUDIO POWER MANAGEM..." 
        <alsa-devel@...a-project.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>
Subject: Re: [PATCH] treewide: remove redundent IS_ERR() before error code check

On Mon, Jan 6, 2020 at 6:11 AM Masahiro Yamada <masahiroy@...nel.org> wrote:
>
> 'PTR_ERR(p) == -E*' is a stronger condition than IS_ERR(p).
> Hence, IS_ERR(p) is unneeded.
>
> The semantic patch that generates this commit is as follows:
>
> // <smpl>
> @@
> expression ptr;
> constant error_code;
> @@
> -IS_ERR(ptr) && (PTR_ERR(ptr) == - error_code)
> +PTR_ERR(ptr) == - error_code
> // </smpl>
>
> Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>
> ---

Acked-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>

for the acpi/scan.c change, but there seems to be a typo in the subject:

s/redundent/redundant/

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