#include <linux/interrupt.h>
#include <linux/spinlock.h>
#include <linux/io.h>
+#include <linux/log2.h>
#include <asm/rtc.h>
#define DRV_NAME "sh-rtc"
void __iomem *regbase;
unsigned long regsize;
struct resource *res;
- unsigned int alarm_irq, periodic_irq, carry_irq;
+ int alarm_irq;
+ int periodic_irq;
+ int carry_irq;
struct rtc_device *rtc_dev;
spinlock_t lock;
unsigned long capabilities; /* See asm-sh/rtc.h for cap bits */
static int sh_rtc_irq_set_freq(struct device *dev, int freq)
{
+ if (!is_power_of_2(freq))
+ return -EINVAL;
return sh_rtc_ioctl(dev, RTC_IRQP_SET, freq);
}
/* get periodic/carry/alarm irqs */
ret = platform_get_irq(pdev, 0);
- if (unlikely(ret < 0)) {
+ if (unlikely(ret <= 0)) {
ret = -ENOENT;
dev_err(&pdev->dev, "No IRQ for period\n");
goto err_badres;
rtc->periodic_irq = ret;
ret = platform_get_irq(pdev, 1);
- if (unlikely(ret < 0)) {
+ if (unlikely(ret <= 0)) {
ret = -ENOENT;
dev_err(&pdev->dev, "No IRQ for carry\n");
goto err_badres;
rtc->carry_irq = ret;
ret = platform_get_irq(pdev, 2);
- if (unlikely(ret < 0)) {
+ if (unlikely(ret <= 0)) {
ret = -ENOENT;
dev_err(&pdev->dev, "No IRQ for alarm\n");
goto err_badres;