linux-kernel - Re: [PATCHv5 2/4] irqchip/tegra: Fix overflow implicit truncation warnings

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Message-ID: <CAK8P3a05BPRhnKFO8_wTXfX6bbb2gV2xwjwgaYsDSNeQhHYCZw@mail.gmail.com>
Date:   Mon, 6 Dec 2021 09:51:27 +0100
From:   Arnd Bergmann <arnd@...db.de>
To:     Sai Prakash Ranjan <quic_saipraka@...cinc.com>
Cc:     Will Deacon <will@...nel.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Arnd Bergmann <arnd@...db.de>,
        Steven Rostedt <rostedt@...dmis.org>,
        Marc Zyngier <maz@...nel.org>,
        gregkh <gregkh@...uxfoundation.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        quic_psodagud@...cinc.com
Subject: Re: [PATCHv5 2/4] irqchip/tegra: Fix overflow implicit truncation warnings

On Mon, Dec 6, 2021 at 9:28 AM Sai Prakash Ranjan
<quic_saipraka@...cinc.com> wrote:
>
> Fix -Woverflow warnings for tegra irqchip driver which is a result
> of moving arm64 custom MMIO accessor macros to asm-generic function
> implementations giving a bonus type-checking now and uncovering these
> overflow warnings.
>
> drivers/irqchip/irq-tegra.c: In function ‘tegra_ictlr_suspend’:
> drivers/irqchip/irq-tegra.c:151:18: warning: large integer implicitly truncated to unsigned type [-Woverflow]
>    writel_relaxed(~0ul, ictlr + ICTLR_COP_IER_CLR);
>                   ^
>
> Cc: Marc Zyngier <maz@...nel.org>
> Signed-off-by: Sai Prakash Ranjan <quic_saipraka@...cinc.com>

Reviewed-by: Arnd Bergmann <arnd@...db.de>