From: <Lewis.Hanly@microchip.com>
To: <maz@kernel.org>
Cc: <linux-gpio@vger.kernel.org>, <linux-riscv@lists.infradead.org>,
<linus.walleij@linaro.org>, <brgl@bgdev.pl>,
<linux-kernel@vger.kernel.org>, <palmer@dabbelt.com>,
<Conor.Dooley@microchip.com>, <Daire.McNamara@microchip.com>
Subject: Re: [PATCH v3 1/1] gpio: mpfs: add polarfire soc gpio support
Date: Sat, 16 Jul 2022 12:17:36 +0000 [thread overview]
Message-ID: <6ac50f6a-684d-d2b3-a32d-97635abdff13@microchip.com> (raw)
In-Reply-To: <87pmi549rp.wl-maz@kernel.org>
On 16/07/2022 11:44, Marc Zyngier wrote:
> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
>
> On Sat, 16 Jul 2022 08:11:13 +0100,
> <lewis.hanly@microchip.com> wrote:
>>
>> From: Lewis Hanly <lewis.hanly@microchip.com>
>>
>> Add a driver to support the Polarfire SoC gpio controller.
>>
>> Signed-off-by: Lewis Hanly <lewis.hanly@microchip.com>
>> ---
>> drivers/gpio/Kconfig | 9 +
>> drivers/gpio/Makefile | 1 +
>> drivers/gpio/gpio-mpfs.c | 361 +++++++++++++++++++++++++++++++++++++++
>> 3 files changed, 371 insertions(+)
>> create mode 100644 drivers/gpio/gpio-mpfs.c
>
> A couple of other nits:
>
>> +static const struct of_device_id mpfs_of_ids[] = {
>> + { .compatible = "microchip,mpfs-gpio", },
>
> Where is the DT binding for this?
Already upstream,
Documentation/devicetree/bindings/gpio/microchip%2Cmpfs-gpio.yaml
>
>> + { /* end of list */ }
>> +};
>> +
>> +static struct platform_driver mpfs_gpio_driver = {
>> + .probe = mpfs_gpio_probe,
>> + .driver = {
>> + .name = "microchip,mpfs-gpio",
>> + .of_match_table = mpfs_of_ids,
>> + },
>> + .remove = mpfs_gpio_remove,
>
> No, please. You cannot enforce that there are no interrupts being used
> (and nothing checks for this), and you're pretty much guaranteed that
> the system will catch fire on the first interrupt being delivered.
> Moreover, your "remove" callback only turns the clock off, which is
> yet another nail on that coffin.
Will remove.
>
> M.
>
> --
> Without deviation from the norm, progress is not possible.
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next prev parent reply other threads:[~2022-07-16 12:18 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-16 7:11 [PATCH v3 0/1] Add Polarfire SoC GPIO support lewis.hanly
2022-07-16 7:11 ` [PATCH v3 1/1] gpio: mpfs: add polarfire soc gpio support lewis.hanly
2022-07-16 10:33 ` Marc Zyngier
2022-07-16 15:21 ` Lewis.Hanly
2022-07-16 17:52 ` Marc Zyngier
2022-07-16 18:32 ` Conor.Dooley
2022-07-17 15:10 ` Marc Zyngier
2022-07-17 15:46 ` Conor.Dooley
2022-07-31 8:56 ` Lewis.Hanly
2022-07-16 10:44 ` Marc Zyngier
2022-07-16 12:17 ` Lewis.Hanly [this message]
2022-07-16 12:20 ` Conor.Dooley
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