Re: [PATCH v3 6/7] gpio: exar: switch to using regmap

Andy Shevchenko
2020-11-10T14:25:33Z

On Tue, Nov 10, 2020 at 01:34:05PM +0100, Bartosz Golaszewski wrote:
> From: Bartosz Golaszewski <bgolaszewski@baylibre.com>
>
> We can simplify the code in gpio-exar by using regmap. This allows us to
> drop the mutex (regmap provides its own locking) and we can also reuse
> regmap's bit operations instead of implementing our own update function.

...

> + /*
> + * We don't need to check the return values of mmio regmap operations (unless
> + * the regmap has a clock attached which is not the case here).
> + */
> + exar_gpio->regs = devm_regmap_init_mmio(dev, p, &exar_regmap_config);
> + if (IS_ERR(exar_gpio->regs))
> + return PTR_ERR(exar_gpio->regs);
>
> index = ida_alloc(&ida_index, GFP_KERNEL);
> - if (index < 0) {
> - ret = index;
> - goto err_mutex_destroy;
> - }
> + if (index < 0)
> + return index;

And below you effectively use p as regmap!
That's what renaming of variable regs -> regmap or map can easily reveal.

exar_gpio->regs = p;

--
With Best Regards,
Andy Shevchenko