linux-kernel - Re: [PATCH 1/2] ARM: Fix off by one in checking DMA zone size

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Date:   Thu, 24 Mar 2022 20:02:04 +0100
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Florian Fainelli <f.fainelli@...il.com>
Cc:     linux-arm-kernel@...ts.infradead.org,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        Russell King <linux@...linux.org.uk>,
        Nicolas Pitre <nico@...xnic.net>,
        Catalin Marinas <catalin.marinas@....com>,
        open list <linux-kernel@...r.kernel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Ard Biesheuvel <ardb@...nel.org>
Subject: Re: [PATCH 1/2] ARM: Fix off by one in checking DMA zone size

On Thu, Mar 24, 2022 at 6:54 PM Florian Fainelli <f.fainelli@...il.com> wrote:

> The maximum DMA address is PAGE_OFFSET + arm_dma_zone_size - 1, fix this
> by doing the appropriate subtraction.
>
> Fixes: 650320181a08 ("ARM: change ARM_DMA_ZONE_SIZE into a variable")
> Suggested-by: Geert Uytterhoeven <geert@...ux-m68k.org>
> Signed-off-by: Florian Fainelli <f.fainelli@...il.com>

Reviewed-by: Linus Walleij <linus.walleij@...aro.org>

Yours,
Linus Walleij