| Message ID | 1313017318-789-5-git-send-email-john.stultz@linaro.org |
|---|---|
| State | Accepted |
| Commit | 938f97bcf1bdd1b681d5d14d1d7117a2e22d4434 |
| Headers | show |
diff --git a/drivers/rtc/interface.c b/drivers/rtc/interface.c index 3195dbd..eb4c883 100644 --- a/drivers/rtc/interface.c +++ b/drivers/rtc/interface.c @@ -708,7 +708,7 @@ int rtc_irq_set_freq(struct rtc_device *rtc, struct rtc_task *task, int freq) int err = 0; unsigned long flags; - if (freq <= 0 || freq > 5000) + if (freq <= 0 || freq > RTC_MAX_FREQ) return -EINVAL; retry: spin_lock_irqsave(&rtc->irq_task_lock, flags); diff --git a/include/linux/rtc.h b/include/linux/rtc.h index b27ebea..93f4d03 100644 --- a/include/linux/rtc.h +++ b/include/linux/rtc.h @@ -97,6 +97,9 @@ struct rtc_pll_info { #define RTC_AF 0x20 /* Alarm interrupt */ #define RTC_UF 0x10 /* Update interrupt for 1Hz RTC */ + +#define RTC_MAX_FREQ 8192 + #ifdef __KERNEL__ #include <linux/types.h>
Thomas earlier submitted a fix to limit the RTC PIE freq, but picked 5000Hz out of the air. Willy noticed that we should instead use the 8192Hz max from the rtc man documentation. Cc: Willy Tarreau <w@1wt.eu> Cc: stable@kernel.org Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: John Stultz <john.stultz@linaro.org> --- drivers/rtc/interface.c | 2 +- include/linux/rtc.h | 3 +++ 2 files changed, 4 insertions(+), 1 deletions(-)