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gpio: bcm-kona: use platform_irq_count

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platform_irq_count() is the more generic way (independent of
device trees) to determine the count of available interrupts. So
use this instead.

As platform_irq_count() might return an error code (which
of_irq_count doesn't) some additional handling is necessary.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
This commit is contained in:
Peng Fan 2019-12-04 09:24:39 +00:00 committed by Bartosz Golaszewski
parent 0c21639f5a
commit cfdca14c44
1 changed files with 9 additions and 3 deletions
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12
drivers/gpio/gpio-bcm-kona.c
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@ -19,7 +19,6 @@
#include <linux/io.h>
#include <linux/gpio/driver.h>
#include <linux/of_device.h>
#include <linux/of_irq.h>
#include <linux/init.h>
#include <linux/irqdomain.h>
#include <linux/irqchip/chained_irq.h>
@ -586,11 +585,18 @@ static int bcm_kona_gpio_probe(struct platform_device *pdev)
kona_gpio->gpio_chip = template_chip;
chip = &kona_gpio->gpio_chip;
kona_gpio->num_bank = of_irq_count(dev->of_node);
if (kona_gpio->num_bank == 0) {
ret = platform_irq_count(pdev);
if (!ret) {
dev_err(dev, "Couldn't determine # GPIO banks\n");
return -ENOENT;
} else if (ret < 0) {
if (ret != -EPROBE_DEFER)
dev_err(dev, "Couldn't determine GPIO banks: (%pe)\n",
ERR_PTR(ret));
return ret;
}
kona_gpio->num_bank = ret;
if (kona_gpio->num_bank > GPIO_MAX_BANK_NUM) {
dev_err(dev, "Too many GPIO banks configured (max=%d)\n",
GPIO_MAX_BANK_NUM);