When it has more than one restart_work queued meanwhile, the 2nd restart_work is very easy to break the 1st restart work and lead recovery fail.
Add a flag to allow only one restart work running untill device successfully recovered. It already has flag ATH10K_FLAG_CRASH_FLUSH, but it can not use this flag again, because it is clear in ath10k_core_start. The function ieee80211_reconfig(called by ieee80211_restart_work) of mac80211 do many things and drv_start(call to ath10k_core_start) is 1st thing, when drv_start complete, it does not mean restart complete. So it add new flag and clear it in ath10k_reconfig_complete, because it is the last thing called from drv_reconfig_complete of function ieee80211_reconfig, after it, the restart process finished. Tested-on: QCA6174 hw3.2 SDIO WLAN.RMH.4.4.1-00049 Signed-off-by: Wen Gong <[email protected]> --- v6: change commit log v5: change ref count to BIT dev flag, change all queue_work(ar->workqueue, &ar->restart_work) to ath10k_core_start_recovery v4: add atomic_dec(&ar->restart_count) if state is not on v3: change atomic_inc_and_test to atomic_add_return, remove check of ATH10K_STATE_ON v2: add "add refcount for ath10k_core_restart" and remove ar_sdio->can_recovery drivers/net/wireless/ath/ath10k/core.c | 11 +++++++++++ drivers/net/wireless/ath/ath10k/core.h | 4 ++++ drivers/net/wireless/ath/ath10k/debug.c | 6 +++--- drivers/net/wireless/ath/ath10k/mac.c | 1 + drivers/net/wireless/ath/ath10k/pci.c | 2 +- drivers/net/wireless/ath/ath10k/sdio.c | 6 +++--- drivers/net/wireless/ath/ath10k/snoc.c | 2 +- drivers/net/wireless/ath/ath10k/wmi.c | 2 +- 8 files changed, 25 insertions(+), 9 deletions(-) diff --git a/drivers/net/wireless/ath/ath10k/core.c b/drivers/net/wireless/ath/ath10k/core.c index cfffd20df0cc..a9c3cbb400be 100644 --- a/drivers/net/wireless/ath/ath10k/core.c +++ b/drivers/net/wireless/ath/ath10k/core.c @@ -2277,6 +2277,17 @@ static int ath10k_init_hw_params(struct ath10k *ar) return 0; } +void ath10k_core_start_recovery(struct ath10k *ar) +{ + if (test_and_set_bit(ATH10K_FLAG_RESTARTING, &ar->dev_flags)) { + ath10k_warn(ar, "already restarting\n"); + return; + } + + queue_work(ar->workqueue, &ar->restart_work); +} +EXPORT_SYMBOL(ath10k_core_start_recovery); + static void ath10k_core_restart(struct work_struct *work) { struct ath10k *ar = container_of(work, struct ath10k, restart_work); diff --git a/drivers/net/wireless/ath/ath10k/core.h b/drivers/net/wireless/ath/ath10k/core.h index 5c18f6c20462..347137ab7c09 100644 --- a/drivers/net/wireless/ath/ath10k/core.h +++ b/drivers/net/wireless/ath/ath10k/core.h @@ -837,6 +837,9 @@ enum ath10k_dev_flags { /* Per Station statistics service */ ATH10K_FLAG_PEER_STATS, + + /* Indicates that ath10k device is during recovery process and not complete */ + ATH10K_FLAG_RESTARTING, }; enum ath10k_cal_mode { @@ -1291,6 +1294,7 @@ int ath10k_core_start(struct ath10k *ar, enum ath10k_firmware_mode mode, const struct ath10k_fw_components *fw_components); int ath10k_wait_for_suspend(struct ath10k *ar, u32 suspend_opt); void ath10k_core_stop(struct ath10k *ar); +void ath10k_core_start_recovery(struct ath10k *ar); int ath10k_core_register(struct ath10k *ar, const struct ath10k_bus_params *bus_params); void ath10k_core_unregister(struct ath10k *ar); diff --git a/drivers/net/wireless/ath/ath10k/debug.c b/drivers/net/wireless/ath/ath10k/debug.c index e8250a665433..6b6dde513bab 100644 --- a/drivers/net/wireless/ath/ath10k/debug.c +++ b/drivers/net/wireless/ath/ath10k/debug.c @@ -583,7 +583,7 @@ static ssize_t ath10k_write_simulate_fw_crash(struct file *file, ret = ath10k_debug_fw_assert(ar); } else if (!strcmp(buf, "hw-restart")) { ath10k_info(ar, "user requested hw restart\n"); - queue_work(ar->workqueue, &ar->restart_work); + ath10k_core_start_recovery(ar); ret = 0; } else { ret = -EINVAL; @@ -2005,7 +2005,7 @@ static ssize_t ath10k_write_btcoex(struct file *file, } } else { ath10k_info(ar, "restarting firmware due to btcoex change"); - queue_work(ar->workqueue, &ar->restart_work); + ath10k_core_start_recovery(ar); } if (val) @@ -2136,7 +2136,7 @@ static ssize_t ath10k_write_peer_stats(struct file *file, ath10k_info(ar, "restarting firmware due to Peer stats change"); - queue_work(ar->workqueue, &ar->restart_work); + ath10k_core_start_recovery(ar); ret = count; exit: diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c index 82b4bf5ba612..9980011feea8 100644 --- a/drivers/net/wireless/ath/ath10k/mac.c +++ b/drivers/net/wireless/ath/ath10k/mac.c @@ -7268,6 +7268,7 @@ static void ath10k_reconfig_complete(struct ieee80211_hw *hw, ath10k_info(ar, "device successfully recovered\n"); ar->state = ATH10K_STATE_ON; ieee80211_wake_queues(ar->hw); + clear_bit(ATH10K_FLAG_RESTARTING, &ar->dev_flags); } mutex_unlock(&ar->conf_mutex); diff --git a/drivers/net/wireless/ath/ath10k/pci.c b/drivers/net/wireless/ath/ath10k/pci.c index 36426efdb2ea..a21b44ea04ab 100644 --- a/drivers/net/wireless/ath/ath10k/pci.c +++ b/drivers/net/wireless/ath/ath10k/pci.c @@ -1774,7 +1774,7 @@ static void ath10k_pci_fw_dump_work(struct work_struct *work) mutex_unlock(&ar->dump_mutex); - queue_work(ar->workqueue, &ar->restart_work); + ath10k_core_start_recovery(ar); } static void ath10k_pci_fw_crashed_dump(struct ath10k *ar) diff --git a/drivers/net/wireless/ath/ath10k/sdio.c b/drivers/net/wireless/ath/ath10k/sdio.c index 81ddaafb6721..eef96dd1e1ff 100644 --- a/drivers/net/wireless/ath/ath10k/sdio.c +++ b/drivers/net/wireless/ath/ath10k/sdio.c @@ -561,7 +561,7 @@ static int ath10k_sdio_mbox_rx_alloc(struct ath10k *ar, ATH10K_HTC_MBOX_MAX_PAYLOAD_LENGTH); ret = -ENOMEM; - queue_work(ar->workqueue, &ar->restart_work); + ath10k_core_start_recovery(ar); ath10k_warn(ar, "exceeds length, start recovery\n"); goto err; @@ -960,7 +960,7 @@ static int ath10k_sdio_mbox_read_int_status(struct ath10k *ar, ret = ath10k_sdio_read(ar, MBOX_HOST_INT_STATUS_ADDRESS, irq_proc_reg, sizeof(*irq_proc_reg)); if (ret) { - queue_work(ar->workqueue, &ar->restart_work); + ath10k_core_start_recovery(ar); ath10k_warn(ar, "read int status fail, start recovery\n"); goto out; } @@ -2501,7 +2501,7 @@ void ath10k_sdio_fw_crashed_dump(struct ath10k *ar) ath10k_sdio_enable_intrs(ar); - queue_work(ar->workqueue, &ar->restart_work); + ath10k_core_start_recovery(ar); } static int ath10k_sdio_probe(struct sdio_func *func, diff --git a/drivers/net/wireless/ath/ath10k/snoc.c b/drivers/net/wireless/ath/ath10k/snoc.c index 645ed5f63ef8..9ab696f758bd 100644 --- a/drivers/net/wireless/ath/ath10k/snoc.c +++ b/drivers/net/wireless/ath/ath10k/snoc.c @@ -1295,7 +1295,7 @@ int ath10k_snoc_fw_indication(struct ath10k *ar, u64 type) switch (type) { case ATH10K_QMI_EVENT_FW_READY_IND: if (test_bit(ATH10K_SNOC_FLAG_REGISTERED, &ar_snoc->flags)) { - queue_work(ar->workqueue, &ar->restart_work); + ath10k_core_start_recovery(ar); break; } diff --git a/drivers/net/wireless/ath/ath10k/wmi.c b/drivers/net/wireless/ath/ath10k/wmi.c index a81a1ab2de19..c6be27ad7543 100644 --- a/drivers/net/wireless/ath/ath10k/wmi.c +++ b/drivers/net/wireless/ath/ath10k/wmi.c @@ -1936,7 +1936,7 @@ int ath10k_wmi_cmd_send(struct ath10k *ar, struct sk_buff *skb, u32 cmd_id) if (ret == -EAGAIN) { ath10k_warn(ar, "wmi command %d timeout, restarting hardware\n", cmd_id); - queue_work(ar->workqueue, &ar->restart_work); + ath10k_core_start_recovery(ar); } return ret; -- 2.23.0 _______________________________________________ ath10k mailing list [email protected] http://lists.infradead.org/mailman/listinfo/ath10k
