@@ -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);
@@ -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);
@@ -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:
@@ -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);
@@ -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)
@@ -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,
@@ -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;
}
@@ -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;
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. Tested-on: QCA6174 hw3.2 SDIO WLAN.RMH.4.4.1-00049 Signed-off-by: Wen Gong <wgong@codeaurora.org> --- 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(-)