linux-kernel - Re: [PATCH 2/4] gpio: aspeed: Simplify with of_device_get_match

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Message-ID: <cf23070f-8a3c-4c13-a46c-dc95f044c936@linaro.org>
Date: Thu, 6 Nov 2025 20:13:37 +0100
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Bartosz Golaszewski <brgl@...ev.pl>
Cc: Linus Walleij <linus.walleij@...aro.org>, Joel Stanley <joel@....id.au>,
 Andrew Jeffery <andrew@...econstruct.com.au>,
 Eugeniy Paltsev <Eugeniy.Paltsev@...opsys.com>,
 Shubhrajyoti Datta <shubhrajyoti.datta@....com>,
 Srinivas Neeli <srinivas.neeli@....com>, Michal Simek
 <michal.simek@....com>, linux-gpio@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 linux-aspeed@...ts.ozlabs.org
Subject: Re: [PATCH 2/4] gpio: aspeed: Simplify with
 of_device_get_match_data()

On 06/11/2025 17:23, Bartosz Golaszewski wrote:
> On Thu, Nov 6, 2025 at 5:16 PM Krzysztof Kozlowski
> <krzysztof.kozlowski@...aro.org> wrote:
>>
>> Driver's probe function matches against driver's of_device_id table,
>> where each entry has non-NULL match data, so of_match_node() can be
>> simplified with of_device_get_match_data().
>>
>> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
>> ---
>>  drivers/gpio/gpio-aspeed.c | 7 ++-----
>>  1 file changed, 2 insertions(+), 5 deletions(-)
>>
>> diff --git a/drivers/gpio/gpio-aspeed.c b/drivers/gpio/gpio-aspeed.c
>> index 2e0ae953dd99..3d675b63936c 100644
>> --- a/drivers/gpio/gpio-aspeed.c
>> +++ b/drivers/gpio/gpio-aspeed.c
>> @@ -1305,7 +1305,6 @@ MODULE_DEVICE_TABLE(of, aspeed_gpio_of_table);
>>
>>  static int aspeed_gpio_probe(struct platform_device *pdev)
>>  {
>> -       const struct of_device_id *gpio_id;
>>         struct gpio_irq_chip *girq;
>>         struct aspeed_gpio *gpio;
>>         int rc, irq, i, banks, err;
>> @@ -1323,8 +1322,8 @@ static int aspeed_gpio_probe(struct platform_device *pdev)
>>
>>         raw_spin_lock_init(&gpio->lock);
>>
>> -       gpio_id = of_match_node(aspeed_gpio_of_table, pdev->dev.of_node);
>> -       if (!gpio_id)
>> +       gpio->config = of_device_get_match_data(&pdev->dev);
> 
> If you're already doing it, just use device_get_match_data() here and
> elsewhere in the series.

That's not exactly equivalent, but I guess it does not matter if driver
probes only via OF. Sure, I'll change it.


Best regards,
Krzysztof