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gpio: mb86s7x: Remove superfluous test for ACPI companion

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acpi_gpiochip_request_interrupts() will check for ACPI handle of
the GPIO chip parent device and bail out if there is none defined.
Thus, has_acpi_companion() is effectively repeating above and
is not needed in the individual driver.

Assigning ->to_irq() unconditionally doesn't change anything, except
an error code, but this we fix as well by propagating it from
platform_get_irq().

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20200512182623.54990-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Andy Shevchenko 2020-05-12 21:26:23 +03:00 committed by Linus Walleij
parent 672de52744
commit db67aa33d5
1 changed files with 6 additions and 8 deletions
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14
drivers/gpio/gpio-mb86s7x.c
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@ -145,7 +145,9 @@ static int mb86s70_gpio_to_irq(struct gpio_chip *gc, unsigned int offset)
for (index = 0;; index++) {
irq = platform_get_irq(to_platform_device(gc->parent), index);
if (irq <= 0)
if (irq < 0)
return irq;
if (irq == 0)
break;
if (irq_get_irq_data(irq)->hwirq == offset)
return irq;
@ -184,15 +186,13 @@ static int mb86s70_gpio_probe(struct platform_device *pdev)
gchip->gc.free = mb86s70_gpio_free;
gchip->gc.get = mb86s70_gpio_get;
gchip->gc.set = mb86s70_gpio_set;
gchip->gc.to_irq = mb86s70_gpio_to_irq;
gchip->gc.label = dev_name(&pdev->dev);
gchip->gc.ngpio = 32;
gchip->gc.owner = THIS_MODULE;
gchip->gc.parent = &pdev->dev;
gchip->gc.base = -1;
if (has_acpi_companion(&pdev->dev))
gchip->gc.to_irq = mb86s70_gpio_to_irq;
ret = gpiochip_add_data(&gchip->gc, gchip);
if (ret) {
dev_err(&pdev->dev, "couldn't register gpio driver\n");
@ -200,8 +200,7 @@ static int mb86s70_gpio_probe(struct platform_device *pdev)
return ret;
}
if (has_acpi_companion(&pdev->dev))
acpi_gpiochip_request_interrupts(&gchip->gc);
acpi_gpiochip_request_interrupts(&gchip->gc);
return 0;
}
@ -210,8 +209,7 @@ static int mb86s70_gpio_remove(struct platform_device *pdev)
{
struct mb86s70_gpio_chip *gchip = platform_get_drvdata(pdev);
if (has_acpi_companion(&pdev->dev))
acpi_gpiochip_free_interrupts(&gchip->gc);
acpi_gpiochip_free_interrupts(&gchip->gc);
gpiochip_remove(&gchip->gc);
clk_disable_unprepare(gchip->clk);