From 2469bb6a6af944755a7d7daf66be90f3b8decbf9 Mon Sep 17 00:00:00 2001 From: Baochen Qiang Date: Mon, 27 Oct 2025 09:49:12 +0800 Subject: Revert "wifi: ath10k: avoid unnecessary wait for service ready message" This reverts commit 51a73f1b2e56b0324b4a3bb8cebc4221b5be4c7a. Although this commit benefits QCA6174, it breaks QCA988x and QCA9984 [1][2]. Since it is not likely to root cause/fix this issue in a short time, revert it to get those chips back. Compile tested only. Fixes: 51a73f1b2e56 ("wifi: ath10k: avoid unnecessary wait for service ready message") Link: https://lore.kernel.org/ath10k/6d41bc00602c33ffbf68781f563ff2e6c6915a3e.camel@gmail.com # [1] Closes: https://bugzilla.kernel.org/show_bug.cgi?id=220671 # [2] Signed-off-by: Baochen Qiang Reviewed-by: Vasanthakumar Thiagarajan Cc: stable@vger.kernel.org Link: https://patch.msgid.link/20251027-ath10k-revert-polling-first-change-v1-1-89aaf3bcbfa1@oss.qualcomm.com Signed-off-by: Jeff Johnson --- drivers/net/wireless/ath/ath10k/wmi.c | 39 ++++++++++++++++++----------------- 1 file changed, 20 insertions(+), 19 deletions(-) diff --git a/drivers/net/wireless/ath/ath10k/wmi.c b/drivers/net/wireless/ath/ath10k/wmi.c index b3b00d324075..b4aad6604d6d 100644 --- a/drivers/net/wireless/ath/ath10k/wmi.c +++ b/drivers/net/wireless/ath/ath10k/wmi.c @@ -1764,32 +1764,33 @@ void ath10k_wmi_put_wmi_channel(struct ath10k *ar, struct wmi_channel *ch, int ath10k_wmi_wait_for_service_ready(struct ath10k *ar) { - unsigned long timeout = jiffies + WMI_SERVICE_READY_TIMEOUT_HZ; unsigned long time_left, i; - /* Sometimes the PCI HIF doesn't receive interrupt - * for the service ready message even if the buffer - * was completed. PCIe sniffer shows that it's - * because the corresponding CE ring doesn't fires - * it. Workaround here by polling CE rings. Since - * the message could arrive at any time, continue - * polling until timeout. - */ - do { + time_left = wait_for_completion_timeout(&ar->wmi.service_ready, + WMI_SERVICE_READY_TIMEOUT_HZ); + if (!time_left) { + /* Sometimes the PCI HIF doesn't receive interrupt + * for the service ready message even if the buffer + * was completed. PCIe sniffer shows that it's + * because the corresponding CE ring doesn't fires + * it. Workaround here by polling CE rings once. + */ + ath10k_warn(ar, "failed to receive service ready completion, polling..\n"); + for (i = 0; i < CE_COUNT; i++) ath10k_hif_send_complete_check(ar, i, 1); - /* The 100 ms granularity is a tradeoff considering scheduler - * overhead and response latency - */ time_left = wait_for_completion_timeout(&ar->wmi.service_ready, - msecs_to_jiffies(100)); - if (time_left) - return 0; - } while (time_before(jiffies, timeout)); + WMI_SERVICE_READY_TIMEOUT_HZ); + if (!time_left) { + ath10k_warn(ar, "polling timed out\n"); + return -ETIMEDOUT; + } + + ath10k_warn(ar, "service ready completion received, continuing normally\n"); + } - ath10k_warn(ar, "failed to receive service ready completion\n"); - return -ETIMEDOUT; + return 0; } int ath10k_wmi_wait_for_unified_ready(struct ath10k *ar) -- cgit v1.2.3 From 7ceba45a6658ce637da334cd0ebf27f4ede6c0fe Mon Sep 17 00:00:00 2001 From: Benjamin Berg Date: Tue, 28 Oct 2025 12:58:37 +0200 Subject: wifi: cfg80211: add an hrtimer based delayed work item The normal timer mechanism assume that timeout further in the future need a lower accuracy. As an example, the granularity for a timer scheduled 4096 ms in the future on a 1000 Hz system is already 512 ms. This granularity is perfectly sufficient for e.g. timeouts, but there are other types of events that will happen at a future point in time and require a higher accuracy. Add a new wiphy_hrtimer_work type that uses an hrtimer internally. The API is almost identical to the existing wiphy_delayed_work and it can be used as a drop-in replacement after minor adjustments. The work will be scheduled relative to the current time with a slack of 1 millisecond. CC: stable@vger.kernel.org # 6.4+ Signed-off-by: Benjamin Berg Reviewed-by: Johannes Berg Signed-off-by: Miri Korenblit Link: https://patch.msgid.link/20251028125710.7f13a2adc5eb.I01b5af0363869864b0580d9c2a1770bafab69566@changeid Signed-off-by: Johannes Berg --- include/net/cfg80211.h | 78 ++++++++++++++++++++++++++++++++++++++++++++++++++ net/wireless/core.c | 56 ++++++++++++++++++++++++++++++++++++ net/wireless/trace.h | 21 ++++++++++++++ 3 files changed, 155 insertions(+) diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 781624f5913a..820e299f06b5 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -6435,6 +6435,11 @@ static inline void wiphy_delayed_work_init(struct wiphy_delayed_work *dwork, * after wiphy_lock() was called. Therefore, wiphy_cancel_work() can * use just cancel_work() instead of cancel_work_sync(), it requires * being in a section protected by wiphy_lock(). + * + * Note that these are scheduled with a timer where the accuracy + * becomes less the longer in the future the scheduled timer is. Use + * wiphy_hrtimer_work_queue() if the timer must be not be late by more + * than approximately 10 percent. */ void wiphy_delayed_work_queue(struct wiphy *wiphy, struct wiphy_delayed_work *dwork, @@ -6506,6 +6511,79 @@ void wiphy_delayed_work_flush(struct wiphy *wiphy, bool wiphy_delayed_work_pending(struct wiphy *wiphy, struct wiphy_delayed_work *dwork); +struct wiphy_hrtimer_work { + struct wiphy_work work; + struct wiphy *wiphy; + struct hrtimer timer; +}; + +enum hrtimer_restart wiphy_hrtimer_work_timer(struct hrtimer *t); + +static inline void wiphy_hrtimer_work_init(struct wiphy_hrtimer_work *hrwork, + wiphy_work_func_t func) +{ + hrtimer_setup(&hrwork->timer, wiphy_hrtimer_work_timer, + CLOCK_BOOTTIME, HRTIMER_MODE_REL); + wiphy_work_init(&hrwork->work, func); +} + +/** + * wiphy_hrtimer_work_queue - queue hrtimer work for the wiphy + * @wiphy: the wiphy to queue for + * @hrwork: the high resolution timer worker + * @delay: the delay given as a ktime_t + * + * Please refer to wiphy_delayed_work_queue(). The difference is that + * the hrtimer work uses a high resolution timer for scheduling. This + * may be needed if timeouts might be scheduled further in the future + * and the accuracy of the normal timer is not sufficient. + * + * Expect a delay of a few milliseconds as the timer is scheduled + * with some slack and some more time may pass between queueing the + * work and its start. + */ +void wiphy_hrtimer_work_queue(struct wiphy *wiphy, + struct wiphy_hrtimer_work *hrwork, + ktime_t delay); + +/** + * wiphy_hrtimer_work_cancel - cancel previously queued hrtimer work + * @wiphy: the wiphy, for debug purposes + * @hrtimer: the hrtimer work to cancel + * + * Cancel the work *without* waiting for it, this assumes being + * called under the wiphy mutex acquired by wiphy_lock(). + */ +void wiphy_hrtimer_work_cancel(struct wiphy *wiphy, + struct wiphy_hrtimer_work *hrtimer); + +/** + * wiphy_hrtimer_work_flush - flush previously queued hrtimer work + * @wiphy: the wiphy, for debug purposes + * @hrwork: the hrtimer work to flush + * + * Flush the work (i.e. run it if pending). This must be called + * under the wiphy mutex acquired by wiphy_lock(). + */ +void wiphy_hrtimer_work_flush(struct wiphy *wiphy, + struct wiphy_hrtimer_work *hrwork); + +/** + * wiphy_hrtimer_work_pending - Find out whether a wiphy hrtimer + * work item is currently pending. + * + * @wiphy: the wiphy, for debug purposes + * @hrwork: the hrtimer work in question + * + * Return: true if timer is pending, false otherwise + * + * Please refer to the wiphy_delayed_work_pending() documentation as + * this is the equivalent function for hrtimer based delayed work + * items. + */ +bool wiphy_hrtimer_work_pending(struct wiphy *wiphy, + struct wiphy_hrtimer_work *hrwork); + /** * enum ieee80211_ap_reg_power - regulatory power for an Access Point * diff --git a/net/wireless/core.c b/net/wireless/core.c index 797f9f2004a6..54a34d8d356e 100644 --- a/net/wireless/core.c +++ b/net/wireless/core.c @@ -1787,6 +1787,62 @@ bool wiphy_delayed_work_pending(struct wiphy *wiphy, } EXPORT_SYMBOL_GPL(wiphy_delayed_work_pending); +enum hrtimer_restart wiphy_hrtimer_work_timer(struct hrtimer *t) +{ + struct wiphy_hrtimer_work *hrwork = + container_of(t, struct wiphy_hrtimer_work, timer); + + wiphy_work_queue(hrwork->wiphy, &hrwork->work); + + return HRTIMER_NORESTART; +} +EXPORT_SYMBOL_GPL(wiphy_hrtimer_work_timer); + +void wiphy_hrtimer_work_queue(struct wiphy *wiphy, + struct wiphy_hrtimer_work *hrwork, + ktime_t delay) +{ + trace_wiphy_hrtimer_work_queue(wiphy, &hrwork->work, delay); + + if (!delay) { + hrtimer_cancel(&hrwork->timer); + wiphy_work_queue(wiphy, &hrwork->work); + return; + } + + hrwork->wiphy = wiphy; + hrtimer_start_range_ns(&hrwork->timer, delay, + 1000 * NSEC_PER_USEC, HRTIMER_MODE_REL); +} +EXPORT_SYMBOL_GPL(wiphy_hrtimer_work_queue); + +void wiphy_hrtimer_work_cancel(struct wiphy *wiphy, + struct wiphy_hrtimer_work *hrwork) +{ + lockdep_assert_held(&wiphy->mtx); + + hrtimer_cancel(&hrwork->timer); + wiphy_work_cancel(wiphy, &hrwork->work); +} +EXPORT_SYMBOL_GPL(wiphy_hrtimer_work_cancel); + +void wiphy_hrtimer_work_flush(struct wiphy *wiphy, + struct wiphy_hrtimer_work *hrwork) +{ + lockdep_assert_held(&wiphy->mtx); + + hrtimer_cancel(&hrwork->timer); + wiphy_work_flush(wiphy, &hrwork->work); +} +EXPORT_SYMBOL_GPL(wiphy_hrtimer_work_flush); + +bool wiphy_hrtimer_work_pending(struct wiphy *wiphy, + struct wiphy_hrtimer_work *hrwork) +{ + return hrtimer_is_queued(&hrwork->timer); +} +EXPORT_SYMBOL_GPL(wiphy_hrtimer_work_pending); + static int __init cfg80211_init(void) { int err; diff --git a/net/wireless/trace.h b/net/wireless/trace.h index 8a4c34112eb5..2b71f1d867a0 100644 --- a/net/wireless/trace.h +++ b/net/wireless/trace.h @@ -304,6 +304,27 @@ TRACE_EVENT(wiphy_delayed_work_queue, __entry->delay) ); +TRACE_EVENT(wiphy_hrtimer_work_queue, + TP_PROTO(struct wiphy *wiphy, struct wiphy_work *work, + ktime_t delay), + TP_ARGS(wiphy, work, delay), + TP_STRUCT__entry( + WIPHY_ENTRY + __field(void *, instance) + __field(void *, func) + __field(ktime_t, delay) + ), + TP_fast_assign( + WIPHY_ASSIGN; + __entry->instance = work; + __entry->func = work->func; + __entry->delay = delay; + ), + TP_printk(WIPHY_PR_FMT " instance=%p func=%pS delay=%llu", + WIPHY_PR_ARG, __entry->instance, __entry->func, + __entry->delay) +); + TRACE_EVENT(wiphy_work_worker_start, TP_PROTO(struct wiphy *wiphy), TP_ARGS(wiphy), -- cgit v1.2.3 From dfa865d490b1bd252045463588a91a4d3c82f3c8 Mon Sep 17 00:00:00 2001 From: Benjamin Berg Date: Tue, 28 Oct 2025 12:58:38 +0200 Subject: wifi: mac80211: use wiphy_hrtimer_work for ttlm_work The work item may be scheduled relatively far in the future. As the event happens at a specific point in time, the normal timer accuracy is not sufficient in that case. Switch to use wiphy_hrtimer_work so that the accuracy is sufficient. CC: stable@vger.kernel.org Fixes: 702e80470a33 ("wifi: mac80211: support handling of advertised TID-to-link mapping") Signed-off-by: Benjamin Berg Reviewed-by: Johannes Berg Signed-off-by: Miri Korenblit Link: https://patch.msgid.link/20251028125710.83c2c611545e.I35498a6d883ea24b0dc4910cf521aa768d2a0e90@changeid Signed-off-by: Johannes Berg --- net/mac80211/ieee80211_i.h | 2 +- net/mac80211/mlme.c | 24 ++++++++++++------------ 2 files changed, 13 insertions(+), 13 deletions(-) diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index 73fd86ec1bce..eb22279c6e01 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -616,7 +616,7 @@ struct ieee80211_if_managed { u16 removed_links; /* TID-to-link mapping support */ - struct wiphy_delayed_work ttlm_work; + struct wiphy_hrtimer_work ttlm_work; struct ieee80211_adv_ttlm_info ttlm_info; struct wiphy_work teardown_ttlm_work; diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index 3b5827ea438e..623a46b3214e 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -45,7 +45,7 @@ #define IEEE80211_ASSOC_TIMEOUT_SHORT (HZ / 10) #define IEEE80211_ASSOC_MAX_TRIES 3 -#define IEEE80211_ADV_TTLM_SAFETY_BUFFER_MS msecs_to_jiffies(100) +#define IEEE80211_ADV_TTLM_SAFETY_BUFFER_MS (100 * USEC_PER_MSEC) #define IEEE80211_ADV_TTLM_ST_UNDERFLOW 0xff00 #define IEEE80211_NEG_TTLM_REQ_TIMEOUT (HZ / 5) @@ -4242,7 +4242,7 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata, memset(&sdata->u.mgd.ttlm_info, 0, sizeof(sdata->u.mgd.ttlm_info)); - wiphy_delayed_work_cancel(sdata->local->hw.wiphy, &ifmgd->ttlm_work); + wiphy_hrtimer_work_cancel(sdata->local->hw.wiphy, &ifmgd->ttlm_work); memset(&sdata->vif.neg_ttlm, 0, sizeof(sdata->vif.neg_ttlm)); wiphy_delayed_work_cancel(sdata->local->hw.wiphy, @@ -7095,7 +7095,7 @@ static void ieee80211_process_adv_ttlm(struct ieee80211_sub_if_data *sdata, /* if a planned TID-to-link mapping was cancelled - * abort it */ - wiphy_delayed_work_cancel(sdata->local->hw.wiphy, + wiphy_hrtimer_work_cancel(sdata->local->hw.wiphy, &sdata->u.mgd.ttlm_work); } else if (sdata->u.mgd.ttlm_info.active) { /* if no TID-to-link element, set to default mapping in @@ -7130,7 +7130,7 @@ static void ieee80211_process_adv_ttlm(struct ieee80211_sub_if_data *sdata, if (ttlm_info.switch_time) { u16 beacon_ts_tu, st_tu, delay; - u32 delay_jiffies; + u64 delay_usec; u64 mask; /* The t2l map switch time is indicated with a partial @@ -7152,23 +7152,23 @@ static void ieee80211_process_adv_ttlm(struct ieee80211_sub_if_data *sdata, if (delay > IEEE80211_ADV_TTLM_ST_UNDERFLOW) return; - delay_jiffies = TU_TO_JIFFIES(delay); + delay_usec = ieee80211_tu_to_usec(delay); /* Link switching can take time, so schedule it * 100ms before to be ready on time */ - if (delay_jiffies > IEEE80211_ADV_TTLM_SAFETY_BUFFER_MS) - delay_jiffies -= + if (delay_usec > IEEE80211_ADV_TTLM_SAFETY_BUFFER_MS) + delay_usec -= IEEE80211_ADV_TTLM_SAFETY_BUFFER_MS; else - delay_jiffies = 0; + delay_usec = 0; sdata->u.mgd.ttlm_info = ttlm_info; - wiphy_delayed_work_cancel(sdata->local->hw.wiphy, + wiphy_hrtimer_work_cancel(sdata->local->hw.wiphy, &sdata->u.mgd.ttlm_work); - wiphy_delayed_work_queue(sdata->local->hw.wiphy, + wiphy_hrtimer_work_queue(sdata->local->hw.wiphy, &sdata->u.mgd.ttlm_work, - delay_jiffies); + us_to_ktime(delay_usec)); return; } } @@ -8802,7 +8802,7 @@ void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata) timer_setup(&ifmgd->conn_mon_timer, ieee80211_sta_conn_mon_timer, 0); wiphy_delayed_work_init(&ifmgd->tx_tspec_wk, ieee80211_sta_handle_tspec_ac_params_wk); - wiphy_delayed_work_init(&ifmgd->ttlm_work, + wiphy_hrtimer_work_init(&ifmgd->ttlm_work, ieee80211_tid_to_link_map_work); wiphy_delayed_work_init(&ifmgd->neg_ttlm_timeout_work, ieee80211_neg_ttlm_timeout_work); -- cgit v1.2.3 From 3f654d53dff565095d83a84e3b6187526dadf4c8 Mon Sep 17 00:00:00 2001 From: Benjamin Berg Date: Tue, 28 Oct 2025 12:58:39 +0200 Subject: wifi: mac80211: use wiphy_hrtimer_work for ml_reconf_work The work item may be scheduled relatively far in the future. As the event happens at a specific point in time, the normal timer accuracy is not sufficient in that case. Switch to use wiphy_hrtimer_work so that the accuracy is sufficient. CC: stable@vger.kernel.org Fixes: 8eb8dd2ffbbb ("wifi: mac80211: Support link removal using Reconfiguration ML element") Signed-off-by: Benjamin Berg Reviewed-by: Johannes Berg Signed-off-by: Miri Korenblit Link: https://patch.msgid.link/20251028125710.24a7b54e9e37.I063c5c15bf7672f94cea75f83e486a3ca52d098f@changeid Signed-off-by: Johannes Berg --- net/mac80211/ieee80211_i.h | 2 +- net/mac80211/mlme.c | 10 +++++----- 2 files changed, 6 insertions(+), 6 deletions(-) diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index eb22279c6e01..eb38049b2252 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -612,7 +612,7 @@ struct ieee80211_if_managed { u8 *assoc_req_ies; size_t assoc_req_ies_len; - struct wiphy_delayed_work ml_reconf_work; + struct wiphy_hrtimer_work ml_reconf_work; u16 removed_links; /* TID-to-link mapping support */ diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index 623a46b3214e..f95bcf84ecc2 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -4249,7 +4249,7 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata, &ifmgd->neg_ttlm_timeout_work); sdata->u.mgd.removed_links = 0; - wiphy_delayed_work_cancel(sdata->local->hw.wiphy, + wiphy_hrtimer_work_cancel(sdata->local->hw.wiphy, &sdata->u.mgd.ml_reconf_work); wiphy_work_cancel(sdata->local->hw.wiphy, @@ -6876,7 +6876,7 @@ static void ieee80211_ml_reconfiguration(struct ieee80211_sub_if_data *sdata, /* In case the removal was cancelled, abort it */ if (sdata->u.mgd.removed_links) { sdata->u.mgd.removed_links = 0; - wiphy_delayed_work_cancel(sdata->local->hw.wiphy, + wiphy_hrtimer_work_cancel(sdata->local->hw.wiphy, &sdata->u.mgd.ml_reconf_work); } return; @@ -6906,9 +6906,9 @@ static void ieee80211_ml_reconfiguration(struct ieee80211_sub_if_data *sdata, } sdata->u.mgd.removed_links = removed_links; - wiphy_delayed_work_queue(sdata->local->hw.wiphy, + wiphy_hrtimer_work_queue(sdata->local->hw.wiphy, &sdata->u.mgd.ml_reconf_work, - TU_TO_JIFFIES(delay)); + us_to_ktime(ieee80211_tu_to_usec(delay))); } static int ieee80211_ttlm_set_links(struct ieee80211_sub_if_data *sdata, @@ -8793,7 +8793,7 @@ void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata) ieee80211_csa_connection_drop_work); wiphy_delayed_work_init(&ifmgd->tdls_peer_del_work, ieee80211_tdls_peer_del_work); - wiphy_delayed_work_init(&ifmgd->ml_reconf_work, + wiphy_hrtimer_work_init(&ifmgd->ml_reconf_work, ieee80211_ml_reconf_work); wiphy_delayed_work_init(&ifmgd->reconf.wk, ieee80211_ml_sta_reconf_timeout); -- cgit v1.2.3 From fbc1cc6973099f45e4c30b86f12b4435c7cb7d24 Mon Sep 17 00:00:00 2001 From: Benjamin Berg Date: Tue, 28 Oct 2025 12:58:40 +0200 Subject: wifi: mac80211: use wiphy_hrtimer_work for csa.switch_work The work item may be scheduled relatively far in the future. As the event happens at a specific point in time, the normal timer accuracy is not sufficient in that case. Switch to use wiphy_hrtimer_work so that the accuracy is sufficient. To make this work, use the same clock to store the timestamp. CC: stable@vger.kernel.org Fixes: ec3252bff7b6 ("wifi: mac80211: use wiphy work for channel switch") Signed-off-by: Benjamin Berg Reviewed-by: Johannes Berg Signed-off-by: Miri Korenblit Link: https://patch.msgid.link/20251028125710.68258c7e4ac4.I4ff2b2cdffbbf858bf5f08baccc7a88c4f9efe6f@changeid Signed-off-by: Johannes Berg --- net/mac80211/chan.c | 2 +- net/mac80211/ieee80211_i.h | 4 ++-- net/mac80211/link.c | 4 ++-- net/mac80211/mlme.c | 18 +++++++++--------- 4 files changed, 14 insertions(+), 14 deletions(-) diff --git a/net/mac80211/chan.c b/net/mac80211/chan.c index 57065714cf8c..7f8799fd673e 100644 --- a/net/mac80211/chan.c +++ b/net/mac80211/chan.c @@ -1290,7 +1290,7 @@ ieee80211_link_chanctx_reservation_complete(struct ieee80211_link_data *link) &link->csa.finalize_work); break; case NL80211_IFTYPE_STATION: - wiphy_delayed_work_queue(sdata->local->hw.wiphy, + wiphy_hrtimer_work_queue(sdata->local->hw.wiphy, &link->u.mgd.csa.switch_work, 0); break; case NL80211_IFTYPE_UNSPECIFIED: diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index eb38049b2252..878c3b14aeb8 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -1017,10 +1017,10 @@ struct ieee80211_link_data_managed { bool operating_11g_mode; struct { - struct wiphy_delayed_work switch_work; + struct wiphy_hrtimer_work switch_work; struct cfg80211_chan_def ap_chandef; struct ieee80211_parsed_tpe tpe; - unsigned long time; + ktime_t time; bool waiting_bcn; bool ignored_same_chan; bool blocked_tx; diff --git a/net/mac80211/link.c b/net/mac80211/link.c index d71eabe5abf8..4a19b765ccb6 100644 --- a/net/mac80211/link.c +++ b/net/mac80211/link.c @@ -472,10 +472,10 @@ static int _ieee80211_set_active_links(struct ieee80211_sub_if_data *sdata, * from there. */ if (link->conf->csa_active) - wiphy_delayed_work_queue(local->hw.wiphy, + wiphy_hrtimer_work_queue(local->hw.wiphy, &link->u.mgd.csa.switch_work, link->u.mgd.csa.time - - jiffies); + ktime_get_boottime()); } for_each_set_bit(link_id, &add, IEEE80211_MLD_MAX_NUM_LINKS) { diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index f95bcf84ecc2..f3138d158535 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -2594,7 +2594,7 @@ void ieee80211_chswitch_done(struct ieee80211_vif *vif, bool success, return; } - wiphy_delayed_work_queue(sdata->local->hw.wiphy, + wiphy_hrtimer_work_queue(sdata->local->hw.wiphy, &link->u.mgd.csa.switch_work, 0); } @@ -2753,7 +2753,8 @@ ieee80211_sta_process_chanswitch(struct ieee80211_link_data *link, .timestamp = timestamp, .device_timestamp = device_timestamp, }; - unsigned long now; + u32 csa_time_tu; + ktime_t now; int res; lockdep_assert_wiphy(local->hw.wiphy); @@ -2983,10 +2984,9 @@ ieee80211_sta_process_chanswitch(struct ieee80211_link_data *link, csa_ie.mode); /* we may have to handle timeout for deactivated link in software */ - now = jiffies; - link->u.mgd.csa.time = now + - TU_TO_JIFFIES((max_t(int, csa_ie.count, 1) - 1) * - link->conf->beacon_int); + now = ktime_get_boottime(); + csa_time_tu = (max_t(int, csa_ie.count, 1) - 1) * link->conf->beacon_int; + link->u.mgd.csa.time = now + us_to_ktime(ieee80211_tu_to_usec(csa_time_tu)); if (ieee80211_vif_link_active(&sdata->vif, link->link_id) && local->ops->channel_switch) { @@ -3001,7 +3001,7 @@ ieee80211_sta_process_chanswitch(struct ieee80211_link_data *link, } /* channel switch handled in software */ - wiphy_delayed_work_queue(local->hw.wiphy, + wiphy_hrtimer_work_queue(local->hw.wiphy, &link->u.mgd.csa.switch_work, link->u.mgd.csa.time - now); return; @@ -8849,7 +8849,7 @@ void ieee80211_mgd_setup_link(struct ieee80211_link_data *link) else link->u.mgd.req_smps = IEEE80211_SMPS_OFF; - wiphy_delayed_work_init(&link->u.mgd.csa.switch_work, + wiphy_hrtimer_work_init(&link->u.mgd.csa.switch_work, ieee80211_csa_switch_work); ieee80211_clear_tpe(&link->conf->tpe); @@ -10064,7 +10064,7 @@ void ieee80211_mgd_stop_link(struct ieee80211_link_data *link) &link->u.mgd.request_smps_work); wiphy_work_cancel(link->sdata->local->hw.wiphy, &link->u.mgd.recalc_smps); - wiphy_delayed_work_cancel(link->sdata->local->hw.wiphy, + wiphy_hrtimer_work_cancel(link->sdata->local->hw.wiphy, &link->u.mgd.csa.switch_work); } -- cgit v1.2.3 From 70e8335485966d7d4ed85976dceab52803b151a2 Mon Sep 17 00:00:00 2001 From: Abdun Nihaal Date: Tue, 28 Oct 2025 23:13:39 +0530 Subject: wifi: zd1211rw: fix potential memory leak in __zd_usb_enable_rx() The memory allocated for urbs with kcalloc() is not freed on any error path. Fix that by freeing it in the error path. Fixes: e85d0918b54f ("[PATCH] ZyDAS ZD1211 USB-WLAN driver") Signed-off-by: Abdun Nihaal Link: https://patch.msgid.link/20251028174341.139134-1-nihaal@cse.iitm.ac.in Signed-off-by: Johannes Berg --- drivers/net/wireless/zydas/zd1211rw/zd_usb.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/wireless/zydas/zd1211rw/zd_usb.c b/drivers/net/wireless/zydas/zd1211rw/zd_usb.c index 2faa0de2a36e..8ee15a15f4ca 100644 --- a/drivers/net/wireless/zydas/zd1211rw/zd_usb.c +++ b/drivers/net/wireless/zydas/zd1211rw/zd_usb.c @@ -791,6 +791,7 @@ error: if (urbs) { for (i = 0; i < RX_URBS_COUNT; i++) free_rx_urb(urbs[i]); + kfree(urbs); } return r; } -- cgit v1.2.3