Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
MIME-Version: 1.0
References: <20210408195029.69974-1-krzysztof.kozlowski@canonical.com>
In-Reply-To: <20210408195029.69974-1-krzysztof.kozlowski@canonical.com>
From:   Linus Walleij <linus.walleij@linaro.org>
Date:   Sat, 10 Apr 2021 02:07:26 +0200
Message-ID: <CACRpkdYm0yG7mC0H7YwgQdPP1eT=GSkvHbohA7jc6LDsVPsZBQ@mail.gmail.com>
Subject: Re: [PATCH] pinctrl: samsung: use 'int' for register masks in Exynos
To:     Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Cc:     Tomasz Figa <tomasz.figa@gmail.com>,
        Sylwester Nawrocki <s.nawrocki@samsung.com>,
        Linux ARM <linux-arm-kernel@lists.infradead.org>,
        linux-samsung-soc <linux-samsung-soc@vger.kernel.org>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@vger.kernel.org>,
        linux-kernel <linux-kernel@vger.kernel.org>,
        Marek Szyprowski <m.szyprowski@samsung.com>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Content-Type: text/plain; charset="UTF-8"
Precedence: bulk

On Thu, Apr 8, 2021 at 9:50 PM Krzysztof Kozlowski
<krzysztof.kozlowski@canonical.com> wrote:

> The Special Function Registers on all Exynos SoC, including ARM64, are
> 32-bit wide, so entire driver uses matching functions like readl() or
> writel().  On 64-bit ARM using unsigned long for register masks:
> 1. makes little sense as immediately after bitwise operation it will be
>    cast to 32-bit value when calling writel(),
> 2. is actually error-prone because it might promote other operands to
>    64-bit.
>
> Addresses-Coverity: Unintentional integer overflow
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
(...)
> Please apply it directly, I don't have any patches for Samsung pinctrl
> in my tree.

OK! Patch applied!

Yours,
Linus Walleij