From: Viresh Kumar <viresh.kumar@linaro.org>
To: afzal mohammed <afzal.mohd.ma@gmail.com>
Cc: linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org,
Krzysztof Halasa <khalasa@piap.pl>,
Russell King <linux@armlinux.org.uk>,
Hartley Sweeten <hsweeten@visionengravers.com>,
Alexander Sverdlin <alexander.sverdlin@gmail.com>,
Lubomir Rintel <lkundrak@v3.sk>,
Kevin Hilman <khilman@kernel.org>,
Aaro Koskinen <aaro.koskinen@iki.fi>,
Tony Lindgren <tony@atomide.com>,
Viresh Kumar <vireshk@kernel.org>,
Shiraz Hashim <shiraz.linux.kernel@gmail.com>,
Jason Cooper <jason@lakedaemon.net>, Andrew Lunn <andrew@lunn.ch>,
Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>,
Gregory Clement <gregory.clement@bootlin.com>,
Allison Randal <allison@lohutok.net>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Thomas Gleixner <tglx@linutronix.de>,
Arnd Bergmann <arnd@arndb.de>, Enrico Weigelt <info@metux.net>
Subject: Re: [PATCH 02/18] ARM: replace setup_irq() by request_irq()
Date: Wed, 12 Feb 2020 13:40:44 +0530 [thread overview]
Message-ID: <20200212081044.lsw6to5kmzl22ywc@vireshk-i7> (raw)
In-Reply-To: <da7d11b6cf808ea95e2d852a2e8cbca3fde28b6f.1581478324.git.afzal.mohd.ma@gmail.com>
On 12-02-20, 13:32, 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 wherever that has been found, it too has been replaced by free_irq().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@gmail.com>
> ---
> arch/arm/mach-spear/time.c | 9 ++-------
>
> diff --git a/arch/arm/mach-spear/time.c b/arch/arm/mach-spear/time.c
> index 289e036c9c30..92b2850eeb4f 100644
> --- a/arch/arm/mach-spear/time.c
> +++ b/arch/arm/mach-spear/time.c
> @@ -181,12 +181,6 @@ static irqreturn_t spear_timer_interrupt(int irq, void *dev_id)
> return IRQ_HANDLED;
> }
>
> -static struct irqaction spear_timer_irq = {
> - .name = "timer",
> - .flags = IRQF_TIMER,
> - .handler = spear_timer_interrupt
> -};
> -
> static void __init spear_clockevent_init(int irq)
> {
> u32 tick_rate;
> @@ -201,7 +195,8 @@ static void __init spear_clockevent_init(int irq)
>
> clockevents_config_and_register(&clkevt, tick_rate, 3, 0xfff0);
>
> - setup_irq(irq, &spear_timer_irq);
> + if (request_irq(irq, spear_timer_interrupt, IRQF_TIMER, "timer", NULL))
> + pr_err("request_irq() on %s failed\n", "timer");
> }
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
--
viresh
next prev parent reply other threads:[~2020-02-12 8:10 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-12 8:01 [PATCH 00/18] genirq: Remove setup_irq() afzal mohammed
2020-02-12 8:02 ` [PATCH 01/18] alpha: replace setup_irq() by request_irq() afzal mohammed
2020-02-12 8:02 ` [PATCH 02/18] ARM: " afzal mohammed
2020-02-12 8:10 ` Viresh Kumar [this message]
2020-02-12 23:27 ` Alexander Sverdlin
2020-02-12 8:02 ` [PATCH 03/18] c6x: " afzal mohammed
2020-02-13 17:37 ` Mark Salter
2020-02-12 8:03 ` [PATCH 04/18] hexagon: " afzal mohammed
2020-02-12 8:03 ` [PATCH 05/18] ia64: " afzal mohammed
2020-02-12 8:03 ` [PATCH 06/18] m68k: Replace " afzal mohammed
2020-02-12 22:25 ` Finn Thain
2020-02-13 2:03 ` afzal mohammed
2020-02-13 7:11 ` Greg Ungerer
2020-02-14 13:07 ` afzal mohammed
2020-02-12 8:03 ` [PATCH 07/18] microblaze: " afzal mohammed
2020-02-12 8:04 ` [PATCH 08/18] MIPS: " afzal mohammed
2020-02-12 8:04 ` [PATCH 09/18] parisc: " afzal mohammed
2020-02-12 8:04 ` [PATCH 10/18] powerpc: " afzal mohammed
2020-02-13 10:59 ` Christophe Leroy
2020-02-12 8:04 ` [PATCH 11/18] s390: replace " afzal mohammed
2020-02-12 8:04 ` [PATCH 12/18] sh: " afzal mohammed
2020-02-12 8:05 ` [PATCH 13/18] unicore32: " afzal mohammed
2020-02-12 8:05 ` [PATCH 14/18] x86: Replace " afzal mohammed
2020-02-27 10:49 ` Thomas Gleixner
2020-02-27 11:36 ` afzal mohammed
2020-02-27 13:29 ` Thomas Gleixner
2020-02-27 14:26 ` afzal mohammed
2020-02-12 8:05 ` [PATCH 15/18] xtensa: replace " afzal mohammed
2020-02-12 9:10 ` Max Filippov
2020-02-12 8:05 ` [PATCH 16/18] clocksource: Replace " afzal mohammed
2020-02-20 11:13 ` Daniel Lezcano
2020-02-20 14:48 ` Linus Walleij
2020-02-12 8:05 ` [PATCH 17/18] irqchip: " afzal mohammed
[not found] ` <8e00874d072f32496c2d0da05423bda1cadd6975.1581478324.git.afzal.mohd.ma@gmail. com>
2020-02-13 16:02 ` Paul Cercueil
2020-02-12 8:06 ` [PATCH 18/18] genirq: Remove setup_irq() and remove_irq() afzal mohammed
2020-02-20 14:49 ` Linus Walleij
2020-02-27 10:31 ` [PATCH 00/18] genirq: Remove setup_irq() Thomas Gleixner
2020-02-27 11:07 ` afzal mohammed
2020-03-21 17:43 ` afzal mohammed
2020-03-27 16:08 ` [PATCH 0/6] Kill setup_irq() afzal mohammed
2020-03-27 16:09 ` [PATCH v5 1/6] alpha: Replace setup_irq() by request_irq() afzal mohammed
2020-03-27 16:09 ` [PATCH v5 2/6] c6x: replace " afzal mohammed
2020-03-27 16:09 ` [PATCH v5 3/6] hexagon: " afzal mohammed
2020-03-27 16:10 ` [PATCH v5 4/6] sh: " afzal mohammed
2020-03-27 16:10 ` [PATCH v5 5/6] unicore32: " afzal mohammed
2020-03-27 16:11 ` [PATCH v5 6/6] genirq: Remove setup_irq() and remove_irq() afzal mohammed
2020-04-11 14:10 ` afzal mohammed
2020-03-28 2:48 ` [PATCH 0/6] Kill setup_irq() Brian Cain
2020-03-28 7:32 ` afzal mohammed
2020-04-02 15:03 ` Brian Cain
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