@@ -671,6 +671,8 @@ struct rtw_iter_bitrate_mask_data {
struct rtw_dev *rtwdev;
struct ieee80211_vif *vif;
const struct cfg80211_bitrate_mask *mask;
+ unsigned int num_si;
+ struct rtw_sta_info *si[RTW_MAX_MAC_ID_NUM];
};
static void rtw_ra_mask_info_update_iter(void *data, struct ieee80211_sta *sta)
@@ -691,7 +693,8 @@ static void rtw_ra_mask_info_update_iter(void *data, struct ieee80211_sta *sta)
}
si->use_cfg_mask = true;
- rtw_update_sta_info(br_data->rtwdev, si);
+
+ br_data->si[br_data->num_si++] = si;
}
static void rtw_ra_mask_info_update(struct rtw_dev *rtwdev,
@@ -699,11 +702,16 @@ static void rtw_ra_mask_info_update(struct rtw_dev *rtwdev,
const struct cfg80211_bitrate_mask *mask)
{
struct rtw_iter_bitrate_mask_data br_data;
+ unsigned int i;
br_data.rtwdev = rtwdev;
br_data.vif = vif;
br_data.mask = mask;
+ br_data.num_si = 0;
rtw_iterate_stas_atomic(rtwdev, rtw_ra_mask_info_update_iter, &br_data);
+
+ for (i = 0; i < br_data.num_si; i++)
+ rtw_update_sta_info(rtwdev, br_data.si[i]);
}
static int rtw_ops_set_bitrate_mask(struct ieee80211_hw *hw,
@@ -712,7 +720,9 @@ static int rtw_ops_set_bitrate_mask(struct ieee80211_hw *hw,
{
struct rtw_dev *rtwdev = hw->priv;
+ mutex_lock(&rtwdev->mutex);
rtw_ra_mask_info_update(rtwdev, vif, mask);
+ mutex_unlock(&rtwdev->mutex);
return 0;
}
rtw_update_sta_info() internally access some registers while being called unter an atomic lock acquired by rtw_iterate_vifs_atomic(). Move rtw_update_sta_info() call out of (rtw_ra_mask_info_update_iter) in preparation for SDIO support where register access may sleep. Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> --- v2 -> v3: - Move the mutex lock (to protect the dta inside br_data.si[i]) to rtw_ops_set_bitrate_mask() for consistency with other functions in the whole driver (and especially in the same file) as suggested by Ping-Ke (thank you!) v1 -> v2: - keep rtw_iterate_vifs_atomic() to prevent deadlocks as Johannes suggested. Keep track of all relevant stations inside rtw_ra_mask_info_update_iter() and the iter-data and then call rtw_update_sta_info() while held under rtwdev->mutex instead drivers/net/wireless/realtek/rtw88/mac80211.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-)