[PATCH v3 1/2] gpio: mvebu: use platform_irq_count

[Peng Fan <peng.fan@xxxxxxx>]

From: Peng Fan <peng.fan@xxxxxxx>

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.

Reviewed-and-Commit-Log-Provided-by: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx>
Signed-off-by: Peng Fan <peng.fan@xxxxxxx>
---

V3: Add tag

V2:
 Update commit log, add err handling
 Not tested, just code inspection


 drivers/gpio/gpio-mvebu.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/gpio/gpio-mvebu.c b/drivers/gpio/gpio-mvebu.c
index 993bbeb3c006..f0fd82b3417c 100644
--- a/drivers/gpio/gpio-mvebu.c
+++ b/drivers/gpio/gpio-mvebu.c
@@ -46,7 +46,6 @@
 #include <linux/irqdomain.h>
 #include <linux/mfd/syscon.h>
 #include <linux/of_device.h>
-#include <linux/of_irq.h>
 #include <linux/pinctrl/consumer.h>
 #include <linux/platform_device.h>
 #include <linux/pwm.h>
@@ -1102,7 +1101,11 @@ static int mvebu_gpio_probe(struct platform_device *pdev)
 		soc_variant = MVEBU_GPIO_SOC_VARIANT_ORION;
 
 	/* Some gpio controllers do not provide irq support */
-	have_irqs = of_irq_count(np) != 0;
+	err = platform_irq_count(pdev);
+	if (err < 0)
+		return err;
+
+	have_irqs = err != 0;
 
 	mvchip = devm_kzalloc(&pdev->dev, sizeof(struct mvebu_gpio_chip),
 			      GFP_KERNEL);
-- 
2.16.4