RE: [PATCH v7 9/9] gpio: realtek: Add driver for Realtek DHC RTD1625 SoC

Hi Mathieu,

> On Thu Jul 23, 2026 at 5:42 AM CEST, Yu-Chun Lin wrote:
> 
> Hi,
> 
> > From: Tzuyi Chang <[email protected]>
> > +static void rtd1625_gpio_irq_handle(struct irq_desc *desc) {
> > +     unsigned int (*get_reg_offset)(struct rtd1625_gpio *gpio, unsigned
> int offset);
> > +     struct rtd1625_gpio *data = irq_desc_get_handler_data(desc);
> > +     struct irq_chip *chip = irq_desc_get_chip(desc);
> > +     unsigned int irq = irq_desc_get_irq(desc);
> > +     struct irq_domain *domain = data->domain;
> > +     unsigned int reg_offset, i, j, val;
> > +     irq_hw_number_t hwirq;
> > +     unsigned long status;
> > +     u32 irq_type;
> > +
> > +     if (irq == data->irqs[RTD1625_IRQ_ASSERT])
> > +             get_reg_offset = &rtd1625_gpio_gpa_offset;
> > +     else if (irq == data->irqs[RTD1625_IRQ_DEASSERT])
> > +             get_reg_offset = &rtd1625_gpio_gpda_offset;
> > +     else if (irq == data->irqs[RTD1625_IRQ_LEVEL])
> > +             get_reg_offset = &rtd1625_gpio_level_offset;
> > +     else
> > +             return;
> > +
> > +     chained_irq_enter(chip, desc);
> > +
> > +     for (i = 0; i < data->info->num_gpios; i += 32) {
> > +             reg_offset = get_reg_offset(data, i);
> > +             regmap_read(data->regmap, reg_offset, &val);
> > +
> > +             status = val;
> 
> Can the regmap_read() fail here? We are not checking its return, so maybe
> status will contain garbage?
> 

Agreed. Will fix.

Best Regards,
Yu-Chun

> Thanks,
> Mathieu
>