From a5af0edabbbb82921186d54828c0b48c51036d72 Mon Sep 17 00:00:00 2001
From: Michael Ossmann <mike@ossmann.com>
Date: Tue, 13 Jan 2026 14:54:26 -0500
Subject: [PATCH] Ignore re-tune requests

If the requested frequency is the same as the already-configured
frequency, ignore the tuning request.
---
 firmware/common/radio.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/firmware/common/radio.c b/firmware/common/radio.c
index d1441847..29aba95c 100644
--- a/firmware/common/radio.c
+++ b/firmware/common/radio.c
@@ -206,6 +206,8 @@ radio_gain_t radio_get_gain(radio_t* radio, radio_chan_id chan_id, radio_gain_id
 	return radio->channel[chan_id].config.gain[element];
 }
 
+static uint64_t applied_freq = 0xffffffffffffffff;
+
 radio_error_t radio_set_frequency(
 	radio_t* radio,
 	radio_chan_id chan_id,
@@ -257,6 +259,10 @@ radio_error_t radio_set_frequency(
 	}
 
 	// auto-tune
+	if (frequency.hz == applied_freq) {
+		return RADIO_OK;
+	}
+	applied_freq = frequency.hz;
 	bool ok;
 #ifndef PRALINE
 	switch (config->mode) {