1. 10 May, 2022 6 commits
  2. 09 May, 2022 1 commit
    • Wen Gong's avatar
      ath11k: reset 11d state in process of recovery · 9497b788
      Wen Gong authored
      When doing simulate_fw_crash operation periodically with a short interval
      time such as 10 seconds, it is easy happened WMI command timed out for
      WMI_SCAN_CHAN_LIST_CMDID in ath11k_reg_update_chan_list().
      
      log:
      [42287.610053] ath11k_pci 0000:01:00.0: wmi command 12291 timeout
      [42287.610064] ath11k_pci 0000:01:00.0: failed to send WMI_SCAN_CHAN_LIST cmd
      [42287.610073] ath11k_pci 0000:01:00.0: failed to perform regd update : -11
      
      Note that this issue does not occur with a longer interval such as 20 seconds.
      
      The reason the issue occurs with a shorter interval is the following steps:
      1) Upon initial boot, or after device recovery, the initial hw scan plus
      the 11d scan will run, and when 6 GHz support is present, these scans
      can take up to 12 seconds to complete, so ath11k_reg_update_chan_list()
      is still waiting the completion of ar->completed_11d_scan.
      2) If a simulate_fw_crash operation is received during this time, those
      scans do not complete, and ath11k_core_pre_reconfigure_recovery()
      complete the ar->completed_11d_scan, then ath11k_reg_update_chan_list()
      wakeup and start to send WMI_SCAN_CHAN_LIST_CMDID, but firmware is crashed
      at this moment, so wmi timed out occur.
      
      To address this issue, reset the 11d state during device recovery so that
      WMI_SCAN_CHAN_LIST_CMDID does not timed out for short interval time such
      as 10 seconds.
      
      Tested-on: WCN6855 hw2.0 PCI WLAN.HSP.1.1-03125-QCAHSPSWPL_V1_V2_SILICONZ_LITE-3
      
      Fixes: 1f682dc9 ("ath11k: reduce the wait time of 11d scan and hw scan while add interface")
      Signed-off-by: default avatarWen Gong <quic_wgong@quicinc.com>
      Signed-off-by: default avatarKalle Valo <quic_kvalo@quicinc.com>
      Link: https://lore.kernel.org/r/20220505034636.29582-1-quic_wgong@quicinc.com
      9497b788
  3. 06 May, 2022 4 commits
  4. 04 May, 2022 4 commits
  5. 03 May, 2022 25 commits