gpio: tangier: calculate number of ctx using temporary variable

Utilize a temporary variable to calculate number of ctx from ngpio
inside ->probe() implementation.
While at it, include math.h for using DIV_ROUND_UP().

Signed-off-by: Raag Jadav <raag.jadav@intel.com>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

diff --git a/drivers/gpio/gpio-tangier.c b/drivers/gpio/gpio-tangier.c
index e990781..7ce3edd 100644 (file)
--- a/drivers/gpio/gpio-tangier.c
+++ b/drivers/gpio/gpio-tangier.c
@@ -16,6 +16,7 @@
 #include <linux/interrupt.h>
 #include <linux/io.h>
 #include <linux/irq.h>
+#include <linux/math.h>
 #include <linux/module.h>
 #include <linux/pinctrl/pinconf-generic.h>
 #include <linux/spinlock.h>
@@ -428,10 +429,11 @@ static int tng_gpio_add_pin_ranges(struct gpio_chip *chip)
 int devm_tng_gpio_probe(struct device *dev, struct tng_gpio *gpio)
 {
        const struct tng_gpio_info *info = &gpio->info;
+       size_t nctx = DIV_ROUND_UP(info->ngpio, 32);
        struct gpio_irq_chip *girq;
        int ret;
 
-       gpio->ctx = devm_kcalloc(dev, DIV_ROUND_UP(info->ngpio, 32), sizeof(*gpio->ctx), GFP_KERNEL);
+       gpio->ctx = devm_kcalloc(dev, nctx, sizeof(*gpio->ctx), GFP_KERNEL);
        if (!gpio->ctx)
                return -ENOMEM;