[openwrt/openwrt] hostapd: fix bss config reload while in DFS state

[LEDE Commits]

nbd pushed a commit to openwrt/openwrt.git, branch main:
https://git.openwrt.org/3786d15561f6e3923eac9cdff4246226a96b589a

commit 3786d15561f6e3923eac9cdff4246226a96b589a
Author: Felix Fietkau <nbd at nbd.name>
AuthorDate: Sat Jul 5 20:45:48 2025 +0200

    hostapd: fix bss config reload while in DFS state
    
    Only start a BSS after a config change if it was started before.
    
    Signed-off-by: Felix Fietkau <nbd at nbd.name>
---
 package/network/services/hostapd/src/src/ap/ucode.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/package/network/services/hostapd/src/src/ap/ucode.c b/package/network/services/hostapd/src/src/ap/ucode.c
index cbe2ee9506..081872ebe8 100644
--- a/package/network/services/hostapd/src/src/ap/ucode.c
+++ b/package/network/services/hostapd/src/src/ap/ucode.c
@@ -256,6 +256,7 @@ uc_hostapd_bss_set_config(uc_vm_t *vm, size_t nargs)
 	uc_value_t *files_only = uc_fn_arg(2);
 	unsigned int i, idx = 0;
 	int ret = -1;
+	bool started;
 
 	if (!hapd || ucv_type(file) != UC_STRING)
 		goto out;
@@ -287,6 +288,7 @@ uc_hostapd_bss_set_config(uc_vm_t *vm, size_t nargs)
 		goto free;
 	}
 
+	started = hapd->started;
 	__uc_hostapd_bss_stop(hapd);
 
 	old_bss = hapd->conf;
@@ -299,7 +301,10 @@ uc_hostapd_bss_set_config(uc_vm_t *vm, size_t nargs)
 	if (hapd == iface->bss[0])
 		memcpy(hapd->own_addr, hapd->conf->bssid, ETH_ALEN);
 
-	ret = __uc_hostapd_bss_start(hapd);
+	if (started)
+		ret = __uc_hostapd_bss_start(hapd);
+	else
+		ret = 0;
 	hostapd_ucode_update_interfaces();
 
 free: