linux-kernel - Re: [PATCH v2 3/4] gpio: siul2-s32g2: add NXP S32G2/S32G3 SoCs support

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Message-ID: <65f9ea8f-dd4d-4b57-9c53-cf9a9b475b06@web.de>
Date: Sat, 14 Sep 2024 18:40:07 +0200
From: Markus Elfring <Markus.Elfring@....de>
To: Andrei Stefanescu <andrei.stefanescu@....nxp.com>,
 Ghennadi Procopciuc <ghennadi.procopciuc@....com>,
 Larisa Grigore <larisa.grigore@....com>, Phu Luu An <phu.luuan@....com>,
 linux-gpio@...r.kernel.org, devicetree@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org, Bartosz Golaszewski <brgl@...ev.pl>,
 Chester Lin <chester62515@...il.com>, Conor Dooley <conor+dt@...nel.org>,
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>,
 Linus Walleij <linus.walleij@...aro.org>,
 Matthias Brugger <mbrugger@...e.com>, "Rafael J. Wysocki"
 <rafael@...nel.org>, Rob Herring <robh@...nel.org>
Cc: LKML <linux-kernel@...r.kernel.org>, s32@....com
Subject: Re: [PATCH v2 3/4] gpio: siul2-s32g2: add NXP S32G2/S32G3 SoCs
 support

…
> +++ b/drivers/gpio/gpio-siul2-s32g2.c
> @@ -0,0 +1,581 @@
…
> +static void siul2_gpio_set_direction(struct siul2_gpio_dev *dev,
> +				     unsigned int gpio, int dir)
> +{
> +	unsigned long flags;
> +
> +	raw_spin_lock_irqsave(&dev->lock, flags);
…
> +	raw_spin_unlock_irqrestore(&dev->lock, flags);
> +}
…

Under which circumstances would you become interested to apply a statement
like “guard(raw_spinlock_irqsave)(&dev->lock);”?
https://elixir.bootlin.com/linux/v6.11-rc7/source/include/linux/spinlock.h#L551

Regards,
Markus