[PATCH] wifi: ath12k: fix channel list copy on big endian

[Alexander Wilhelm]

The ath12k_wmi_scan_req_arg structure defines the channel list in
CPU-native order, while wmi_start_scan_cmd expects the values in
little-endian format. The simple memcpy causes the hardware scan to fail on
big-endian architectures. Set __le32* type for the tmp_ptr and swap channel
values to support both architectures correctly.

Signed-off-by: Alexander Wilhelm <alexander.wilhelm at westermo.com>
---
 drivers/net/wireless/ath/ath12k/wmi.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/net/wireless/ath/ath12k/wmi.c b/drivers/net/wireless/ath/ath12k/wmi.c
index 65a05a9520ff..9e1d3c662852 100644
--- a/drivers/net/wireless/ath/ath12k/wmi.c
+++ b/drivers/net/wireless/ath/ath12k/wmi.c
@@ -2571,7 +2571,8 @@ int ath12k_wmi_send_scan_start_cmd(struct ath12k *ar,
 	struct wmi_tlv *tlv;
 	void *ptr;
 	int i, ret, len;
-	u32 *tmp_ptr, extraie_len_with_pad = 0;
+	__le32 *tmp_ptr;
+	u32 extraie_len_with_pad = 0;
 	struct ath12k_wmi_hint_short_ssid_arg *s_ssid = NULL;
 	struct ath12k_wmi_hint_bssid_arg *hint_bssid = NULL;
 
@@ -2656,9 +2657,10 @@ int ath12k_wmi_send_scan_start_cmd(struct ath12k *ar,
 	tlv = ptr;
 	tlv->header = ath12k_wmi_tlv_hdr(WMI_TAG_ARRAY_UINT32, len);
 	ptr += TLV_HDR_SIZE;
-	tmp_ptr = (u32 *)ptr;
+	tmp_ptr = (__le32 *)ptr;
 
-	memcpy(tmp_ptr, arg->chan_list, arg->num_chan * 4);
+	for (i = 0; i < arg->num_chan; i++)
+		tmp_ptr[i] = cpu_to_le32(arg->chan_list[i]);
 
 	ptr += len;
 

---
base-commit: 702847e8cfd51856836a282db2073defd7cfd80c
change-id: 20260317-fix-channel-list-copy-cef5cad24fb6

Best regards,
-- 
Alexander Wilhelm <alexander.wilhelm at westermo.com>