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ath10k: introduce a stricter scan state machine

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This aims at fixing some rare scan bugs related to
firmware reporting unexpected scan event
sequences.

One such bug was if spectral scan phyerr reporting
prevented firmware from properly propagating scan
events to host. This led to scan timeout. After
that next scan would trigger scan completed event
first (before scan started event) leading to
ar->scan.in_progress and timeout timer states to
be overwritten incorrectly and making the very
next scan to hang forever.

Reported-by: Janusz Dziedzic <janusz.dziedzic@tieto.com>
Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
This commit is contained in:
Michal Kazior
2014-08-05 14:54:44 +02:00
committed by Kalle Valo
parent 9ff8b7247d
commit 5c81c7fd62
5 changed files with 283 additions and 139 deletions
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4
drivers/net/wireless/ath/ath10k/mac.h
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@@ -31,7 +31,9 @@ void ath10k_mac_destroy(struct ath10k *ar);
int ath10k_mac_register(struct ath10k *ar);
void ath10k_mac_unregister(struct ath10k *ar);
struct ath10k_vif *ath10k_get_arvif(struct ath10k *ar, u32 vdev_id);
void ath10k_reset_scan(unsigned long ptr);
void __ath10k_scan_finish(struct ath10k *ar);
void ath10k_scan_finish(struct ath10k *ar);
void ath10k_scan_timeout_work(struct work_struct *work);
void ath10k_offchan_tx_purge(struct ath10k *ar);
void ath10k_offchan_tx_work(struct work_struct *work);
void ath10k_mgmt_over_wmi_tx_purge(struct ath10k *ar);