diff options
| author | Michal Kazior <michal.kazior@tieto.com> | 2013-07-16 09:54:35 +0200 |
|---|---|---|
| committer | Kalle Valo <kvalo@qca.qualcomm.com> | 2013-07-30 18:01:20 +0300 |
| commit | affd321733eebc92b12cd329505f63e94ae80c93 (patch) | |
| tree | 2e743c8a0a89f6e6057cd2c8f4b96769dfcdde17 /drivers/net/wireless/ath/ath10k/wmi.c | |
| parent | 87571bf0b8b27d4a97848ce48de34fa6d3b12db8 (diff) | |
ath10k: implement device recovery
Restart the hardware if FW crashes.
If FW crashes during recovery we leave the
hardware in a "wedged" state to avoid recursive
recoveries.
When in "wedged" state userspace may bring
interfaces down (to issue stop()) and then bring
one interface (to issue start()) to reload
hardware manually.
Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
Diffstat (limited to 'drivers/net/wireless/ath/ath10k/wmi.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath10k/wmi.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath10k/wmi.c b/drivers/net/wireless/ath/ath10k/wmi.c index b7e7e456b5d..0d25cd733af 100644 --- a/drivers/net/wireless/ath/ath10k/wmi.c +++ b/drivers/net/wireless/ath/ath10k/wmi.c @@ -27,6 +27,13 @@ void ath10k_wmi_flush_tx(struct ath10k *ar) { int ret; + lockdep_assert_held(&ar->conf_mutex); + + if (ar->state == ATH10K_STATE_WEDGED) { + ath10k_warn("wmi flush skipped - device is wedged anyway\n"); + return; + } + ret = wait_event_timeout(ar->wmi.wq, atomic_read(&ar->wmi.pending_tx_count) == 0, 5*HZ); |