rtc: bunch of drivers: fix 'no irq' case handing
This patch fixes a bunch of irq checking misuses. Most drivers were
getting irq via platform_get_irq(), which returns -ENXIO or r->start.
rtc-cmos.c is special. It is using PNP and platform bindings. Hopefully
nobody is using PNP IRQ 0 for RTC. So the changes should be safe.
rtc-sh.c is using platform_get_irq, but was storing a result into an
unsigned type, then was checking for < 0. This is fixed now.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/rtc/rtc-sh.c b/drivers/rtc/rtc-sh.c
index aaf9d6a..5ed66ac 100644
--- a/drivers/rtc/rtc-sh.c
+++ b/drivers/rtc/rtc-sh.c
@@ -89,7 +89,9 @@
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 */
@@ -578,7 +580,7 @@
/* 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;
@@ -586,7 +588,7 @@
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;
@@ -594,7 +596,7 @@
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;