linux-kernel - Re: [PATCH v4 8/8] linux/log2.h: Use roundup/dow_pow

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Message-ID: <CAL_JsqLMCXdnZag3jihV_dzuR+wFaVKFb7q_PdKTxTg0LVA6cw@mail.gmail.com>
Date:   Tue, 3 Dec 2019 09:53:05 -0600
From:   Rob Herring <robh+dt@...nel.org>
To:     Nicolas Saenz Julienne <nsaenzjulienne@...e.de>
Cc:     Andrew Murray <andrew.murray@....com>,
        Marc Zyngier <maz@...nel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Hanjun Guo <guohanjun@...wei.com>,
        Sudeep Holla <sudeep.holla@....com>,
        Tariq Toukan <tariqt@...lanox.com>,
        Frank Rowand <frowand.list@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        "maintainer:BROADCOM BCM7XXX ARM ARCHITECTURE" 
        <bcm-kernel-feedback-list@...adcom.com>,
        Eric Anholt <eric@...olt.net>,
        Stefan Wahren <wahrenst@....net>,
        Shawn Lin <shawn.lin@...k-chips.com>,
        Heiko Stuebner <heiko@...ech.de>,
        Christoph Hellwig <hch@....de>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Robin Murphy <robin.murphy@....com>,
        james.quinlan@...adcom.com, Matthias Brugger <mbrugger@...e.com>,
        Phil Elwell <phil@...pberrypi.org>,
        Jeremy Linton <jeremy.linton@....com>,
        PCI <linux-pci@...r.kernel.org>,
        "moderated list:BROADCOM BCM2835 ARM ARCHITECTURE" 
        <linux-rpi-kernel@...ts.infradead.org>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Len Brown <lenb@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        linux-acpi@...r.kernel.org,
        "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" 
        <linux-arm-kernel@...ts.infradead.org>,
        netdev <netdev@...r.kernel.org>, linux-rdma@...r.kernel.org,
        devicetree@...r.kernel.org,
        "open list:ARM/Rockchip SoC..." <linux-rockchip@...ts.infradead.org>,
        Linux IOMMU <iommu@...ts.linux-foundation.org>
Subject: Re: [PATCH v4 8/8] linux/log2.h: Use roundup/dow_pow_two() on 64bit calculations

On Tue, Dec 3, 2019 at 5:48 AM Nicolas Saenz Julienne
<nsaenzjulienne@...e.de> wrote:
>
> The function now is safe to use while expecting a 64bit value. Use it
> where relevant.

What was wrong with the existing code? This is missing some context.

> Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@...e.de>
> ---
>  drivers/acpi/arm64/iort.c                        | 2 +-
>  drivers/net/ethernet/mellanox/mlx4/en_clock.c    | 3 ++-
>  drivers/of/device.c                              | 3 ++-

In any case,

Acked-by: Rob Herring <robh@...nel.org>

>  drivers/pci/controller/cadence/pcie-cadence-ep.c | 3 ++-
>  drivers/pci/controller/cadence/pcie-cadence.c    | 3 ++-
>  drivers/pci/controller/pcie-brcmstb.c            | 3 ++-
>  drivers/pci/controller/pcie-rockchip-ep.c        | 5 +++--
>  kernel/dma/direct.c                              | 2 +-
>  8 files changed, 15 insertions(+), 9 deletions(-)