@@ -8908,7 +8908,7 @@ static int ath11k_mac_op_remain_on_channel(struct ieee80211_hw *hw,
{
struct ath11k *ar = hw->priv;
struct ath11k_vif *arvif = ath11k_vif_to_arvif(vif);
- struct scan_req_params arg;
+ struct scan_req_params *arg;
int ret;
u32 scan_time_msec;
@@ -8940,27 +8940,31 @@ static int ath11k_mac_op_remain_on_channel(struct ieee80211_hw *hw,
scan_time_msec = ar->hw->wiphy->max_remain_on_channel_duration * 2;
- memset(&arg, 0, sizeof(arg));
- ath11k_wmi_start_scan_init(ar, &arg);
- arg.num_chan = 1;
- arg.chan_list = kcalloc(arg.num_chan, sizeof(*arg.chan_list),
- GFP_KERNEL);
- if (!arg.chan_list) {
+ arg = kzalloc(sizeof(*arg), GFP_KERNEL);
+ if (!arg) {
ret = -ENOMEM;
goto exit;
}
+ ath11k_wmi_start_scan_init(ar, arg);
+ arg->num_chan = 1;
+ arg->chan_list = kcalloc(arg->num_chan, sizeof(*arg->chan_list),
+ GFP_KERNEL);
+ if (!arg->chan_list) {
+ ret = -ENOMEM;
+ goto free_arg;
+ }
- arg.vdev_id = arvif->vdev_id;
- arg.scan_id = ATH11K_SCAN_ID;
- arg.chan_list[0] = chan->center_freq;
- arg.dwell_time_active = scan_time_msec;
- arg.dwell_time_passive = scan_time_msec;
- arg.max_scan_time = scan_time_msec;
- arg.scan_flags |= WMI_SCAN_FLAG_PASSIVE;
- arg.scan_flags |= WMI_SCAN_FILTER_PROBE_REQ;
- arg.burst_duration = duration;
-
- ret = ath11k_start_scan(ar, &arg);
+ arg->vdev_id = arvif->vdev_id;
+ arg->scan_id = ATH11K_SCAN_ID;
+ arg->chan_list[0] = chan->center_freq;
+ arg->dwell_time_active = scan_time_msec;
+ arg->dwell_time_passive = scan_time_msec;
+ arg->max_scan_time = scan_time_msec;
+ arg->scan_flags |= WMI_SCAN_FLAG_PASSIVE;
+ arg->scan_flags |= WMI_SCAN_FILTER_PROBE_REQ;
+ arg->burst_duration = duration;
+
+ ret = ath11k_start_scan(ar, arg);
if (ret) {
ath11k_warn(ar->ab, "failed to start roc scan: %d\n", ret);
@@ -8986,7 +8990,9 @@ static int ath11k_mac_op_remain_on_channel(struct ieee80211_hw *hw,
ret = 0;
free_chan_list:
- kfree(arg.chan_list);
+ kfree(arg->chan_list);
+free_arg:
+ kfree(arg);
exit:
mutex_unlock(&ar->conf_mutex);
return ret;
When compiling with clang 16.0.6, I've noticed the following: drivers/net/wireless/ath/ath11k/mac.c:8903:12: warning: stack frame size (1032) exceeds limit (1024) in 'ath11k_mac_op_remain_on_channel' [-Wframe-larger-than] static int ath11k_mac_op_remain_on_channel(struct ieee80211_hw *hw, ^ 68/1032 (6.59%) spills, 964/1032 (93.41%) variables So switch to kzalloc()'ed instance of 'struct scan_req_params' like it's done in 'ath11k_mac_op_hw_scan()'. Compile tested only. Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru> --- v2: adjust ath11k_mac_op_remain_on_channel() exit path (Jeff Johnson) --- drivers/net/wireless/ath/ath11k/mac.c | 44 +++++++++++++++------------ 1 file changed, 25 insertions(+), 19 deletions(-)