linux-kernel - Re: [PATCH 16/18] clocksource: Replace setup_irq() by request

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Message-ID: <7ebf8cbc-0186-c8ea-fc0d-979c762b526b@linaro.org>
Date:   Thu, 20 Feb 2020 12:13:41 +0100
From:   Daniel Lezcano <daniel.lezcano@...aro.org>
To:     afzal mohammed <afzal.mohd.ma@...il.com>,
        linux-kernel@...r.kernel.org, linux-rpi-kernel@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org,
        linux-amlogic@...ts.infradead.org
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Florian Fainelli <f.fainelli@...il.com>,
        Ray Jui <rjui@...adcom.com>,
        Scott Branden <sbranden@...adcom.com>,
        bcm-kernel-feedback-list@...adcom.com,
        Nicolas Saenz Julienne <nsaenzjulienne@...e.de>,
        Kukjin Kim <kgene@...nel.org>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        Barry Song <baohua@...nel.org>,
        Uwe Kleine-König <u.kleine-koenig@...gutronix.de>,
        Kevin Hilman <khilman@...libre.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Tony Prisk <linux@...sktech.co.nz>,
        Allison Randal <allison@...utok.net>,
        Enrico Weigelt <info@...ux.net>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Kate Stewart <kstewart@...uxfoundation.org>
Subject: Re: [PATCH 16/18] clocksource: Replace setup_irq() by request_irq()

On 12/02/2020 09:05, afzal mohammed wrote:
> request_irq() is preferred over setup_irq(). Existing callers of
> setup_irq() reached mostly via 'init_IRQ()' & 'time_init()', while
> memory allocators are ready by 'mm_init()'.
> 
> Per tglx[1], setup_irq() existed in olden days when allocators were not
> ready by the time early interrupts were initialized.
> 
> Hence replace setup_irq() by request_irq().
> 
> Seldom remove_irq() usage has been observed coupled with setup_irq(),
> wherever that has been found, it too has been replaced by free_irq().
> 
> [1] https://lkml.kernel.org/r/alpine.DEB.2.20.1710191609480.1971@nanos
> 
> Signed-off-by: afzal mohammed <afzal.mohd.ma@...il.com>

Nice, thanks for this cleanup

Acked-by: Daniel Lezcano <daniel.lezcano@...aro.org>

[ ... ]

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