From 936fe64c4a04aece9738c07f468d7fa6febc8275 Mon Sep 17 00:00:00 2001
From: Gwenhael Goavec-Merou <gwenhael.goavec-merou@trabucayre.com>
Date: Wed, 31 Dec 2025 12:09:58 +0100
Subject: [PATCH] ftdipp_mpsse.cpp: setClkFreq: flush buffers before changing
 clock frequency

---
 src/ftdipp_mpsse.cpp | 22 +++++++++++-----------
 1 file changed, 11 insertions(+), 11 deletions(-)

diff --git a/src/ftdipp_mpsse.cpp b/src/ftdipp_mpsse.cpp
index 0c13a4e..3deb7da 100644
--- a/src/ftdipp_mpsse.cpp
+++ b/src/ftdipp_mpsse.cpp
@@ -377,6 +377,17 @@ int FTDIpp_MPSSE::setClkFreq(uint32_t clkHZ)
 	float real_freq = 0;
 	uint16_t presc;
 
+#if (FTDI_VERSION < 105)
+	ftdi_usb_purge_buffers(_ftdi);
+#else
+	if ((ret = ftdi_tcioflush(_ftdi)) < 0) {
+		printError("selfClkFreq: fail to flush buffers: " +
+				string(ftdi_get_error_string(_ftdi)));
+		return ret;
+	}
+
+#endif
+
 	_clkHZ = clkHZ;
 
 	/* FT2232C has no divide by 5 instruction
@@ -446,17 +457,6 @@ int FTDIpp_MPSSE::setClkFreq(uint32_t clkHZ)
 		return ret;
 	}
 
-#if (FTDI_VERSION < 105)
-	ftdi_usb_purge_buffers(_ftdi);
-#else
-	if ((ret = ftdi_tcioflush(_ftdi)) < 0) {
-		printError("selfClkFreq: fail to flush buffers: " +
-				string(ftdi_get_error_string(_ftdi)));
-		return ret;
-	}
-
-#endif
-
 	_clkHZ = real_freq;
 
 	return real_freq;