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Subject: Re: [PATCH v3] microblaze: Replace setup_irq() by request_irq()
To:     afzal mohammed <afzal.mohd.ma@gmail.com>,
        linux-kernel@vger.kernel.org
References: <20200304005000.5067-1-afzal.mohd.ma@gmail.com>
From:   Michal Simek <monstr@monstr.eu>
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Message-ID: <955f28cf-f0b4-e616-1c95-23d157244fb5@monstr.eu>
Date:   Mon, 9 Mar 2020 12:43:59 +0100
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From: Michal Simek <monstr@monstr.eu>
To: afzal mohammed <afzal.mohd.ma@gmail.com>, linux-kernel@vger.kernel.org
Message-ID: <955f28cf-f0b4-e616-1c95-23d157244fb5@monstr.eu>
Subject: Re: [PATCH v3] microblaze: Replace setup_irq() by request_irq()
References: <20200304005000.5067-1-afzal.mohd.ma@gmail.com>
In-Reply-To: <20200304005000.5067-1-afzal.mohd.ma@gmail.com>

--Nnq5kcNMPenQ7UNPLELRuIDCvo2c97uLF
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On 04. 03. 20 1:49, afzal mohammed wrote:
> request_irq() is preferred over setup_irq(). Invocations of setup_irq()=

> occur after memory allocators are ready.
>=20
> Per tglx[1], setup_irq() existed in olden days when allocators were not=

> ready by the time early interrupts were initialized.
>=20
> Hence replace setup_irq() by request_irq().
>=20
> [1] https://lkml.kernel.org/r/alpine.DEB.2.20.1710191609480.1971@nanos
>=20
> Signed-off-by: afzal mohammed <afzal.mohd.ma@gmail.com>
> ---
> Hi microblaze maintainers,
>=20
> if okay w/ this change, please consider taking it thr' your tree, else =
please
> let me know.
>=20
> Regards
> afzal
>=20
> Link to v2 & v1,
> [v2] https://lkml.kernel.org/r/cover.1582471508.git.afzal.mohd.ma@gmail=
=2Ecom
> [v1] https://lkml.kernel.org/r/cover.1581478323.git.afzal.mohd.ma@gmail=
=2Ecom
>=20
> v3:
>  * Split out from tree wide series, as Thomas suggested to get it thr'
> 	respective maintainers
>  * Modify pr_err displayed in case of error
>  * Re-arrange code & choose pr_err args as required to improve readabil=
ity
>  * Remove irrelevant parts from commit message & improve
> =20
> v2:
>  * Replace pr_err("request_irq() on %s failed" by
>            pr_err("%s: request_irq() failed"
>  * Commit message massage
>=20
>  arch/microblaze/kernel/timer.c | 10 ++--------
>  1 file changed, 2 insertions(+), 8 deletions(-)
>=20
> diff --git a/arch/microblaze/kernel/timer.c b/arch/microblaze/kernel/ti=
mer.c
> index a6683484b3a1..f8832cf49384 100644
> --- a/arch/microblaze/kernel/timer.c
> +++ b/arch/microblaze/kernel/timer.c
> @@ -161,13 +161,6 @@ static irqreturn_t timer_interrupt(int irq, void *=
dev_id)
>  	return IRQ_HANDLED;
>  }
> =20
> -static struct irqaction timer_irqaction =3D {
> -	.handler =3D timer_interrupt,
> -	.flags =3D IRQF_TIMER,
> -	.name =3D "timer",
> -	.dev_id =3D &clockevent_xilinx_timer,
> -};
> -
>  static __init int xilinx_clockevent_init(void)
>  {
>  	clockevent_xilinx_timer.mult =3D
> @@ -309,7 +302,8 @@ static int __init xilinx_timer_init(struct device_n=
ode *timer)
> =20
>  	freq_div_hz =3D timer_clock_freq / HZ;
> =20
> -	ret =3D setup_irq(irq, &timer_irqaction);
> +	ret =3D request_irq(irq, timer_interrupt, IRQF_TIMER, "timer",
> +			  &clockevent_xilinx_timer);
>  	if (ret) {
>  		pr_err("Failed to setup IRQ");
>  		return ret;
>=20


Applied.

Thanks,
Michal

--=20
Michal Simek, Ing. (M.Eng), OpenPGP -> KeyID: FE3D1F91
w: www.monstr.eu p: +42-0-721842854
Maintainer of Linux kernel - Xilinx Microblaze
Maintainer of Linux kernel - Xilinx Zynq ARM and ZynqMP ARM64 SoCs
U-Boot custodian - Xilinx Microblaze/Zynq/ZynqMP/Versal SoCs


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