From b9484852f144676276f2bd5d4361806a9767e7a0 Mon Sep 17 00:00:00 2001
From: Marian Buschsieweke <marian.buschsieweke@ovgu.de>
Date: Mon, 22 May 2023 15:06:07 +0200
Subject: [PATCH] drivers/sx126x: fix argument validation in spreading factor

The lowest possible value is `LORA_SF5` and not `LORA_SF6`. This fixes
the argument validation to allow setting `LORA_SF5` as spreading factor.

Fixes https://github.com/RIOT-OS/RIOT/issues/17861
---
 drivers/sx126x/sx126x_netdev.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/sx126x/sx126x_netdev.c b/drivers/sx126x/sx126x_netdev.c
index 306a1692a4..d6aaaaa658 100644
--- a/drivers/sx126x/sx126x_netdev.c
+++ b/drivers/sx126x/sx126x_netdev.c
@@ -401,7 +401,7 @@ static int _set(netdev_t *netdev, netopt_t opt, const void *val, size_t len)
         const uint8_t max_sf = sx126x_is_llcc68(dev)
                                ? llcc68_max_sf
                                : sx126x_max_sf;
-        if ((sf < LORA_SF6) || (sf > max_sf)) {
+        if ((sf < LORA_SF5) || (sf > max_sf)) {
             res = -EINVAL;
             break;
         }