| Message ID | 20250428025940.980313-1-liudalin@kylinsec.com.cn |
|---|---|
| State | Superseded |
| Headers | show |
| Series | rtc: loongson: Add missing alarm notifications for ACPI RTC events | expand |
diff --git a/drivers/rtc/rtc-loongson.c b/drivers/rtc/rtc-loongson.c index 97e5625c064c..0c573f198f63 100644 --- a/drivers/rtc/rtc-loongson.c +++ b/drivers/rtc/rtc-loongson.c @@ -129,6 +129,8 @@ static u32 loongson_rtc_handler(void *id) { struct loongson_rtc_priv *priv = (struct loongson_rtc_priv *)id; + rtc_update_irq(priv->rtcdev, 1, RTC_AF | RTC_IRQF); + spin_lock(&priv->lock); /* Disable RTC alarm wakeup and interrupt */ writel(readl(priv->pm_base + PM1_EN_REG) & ~RTC_EN,
When an application sets and enables an alarm on Loongson RTC devices, the alarm notification fails to propagate to userspace because the ACPI event handler omits calling rtc_update_irq(). As a result, processes waiting via select() or poll() on RTC device files fail to receive alarm notifications. Fixes: 1b733a9ebc3d ("rtc: Add rtc driver for the Loongson family chips") Signed-off-by: Liu Dalin <liudalin@kylinsec.com.cn> --- drivers/rtc/rtc-loongson.c | 2 ++ 1 file changed, 2 insertions(+)