rtc: Fix RTC PIE frequency limit
commit 938f97bcf1bdd1b681d5d14d1d7117a2e22d4434 upstream.
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: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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 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);