linux-kernel - [PATCH 0/3] Bluetooth: hci_qca: Add delay after power-off pulse

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Mon, 25 Feb 2019 15:49:51 -0800
From:   Matthias Kaehlcke <mka@...omium.org>
To:     Marcel Holtmann <marcel@...tmann.org>,
        Johan Hedberg <johan.hedberg@...il.com>
Cc:     linux-bluetooth@...r.kernel.org, linux-kernel@...r.kernel.org,
        Balakrishna Godavarthi <bgodavar@...eaurora.org>,
        Matthias Kaehlcke <mka@...omium.org>
Subject: [PATCH 0/3] Bluetooth: hci_qca: Add delay after power-off pulse

Initialization of the QCA WCN3990 often fails at boot time:

 [   15.205224] Bluetooth: hci0: setting up wcn3990
 [   17.341062] Bluetooth: hci0: command 0xfc00 tx timeout
 [   22.101453] ERROR: Bluetooth initialization failed
 [   25.337740] Bluetooth: hci0: Reading QCA version information failed (-110)

A short delay after sending a power-off pulse (which is done immediately
before sending a power-on pulse) fixes this.

Also move the delays to qca_send_power_pulse(), since they are directly
related with sending the pulses. Change the interface of
qca_send_power_pulse() to receive a boolean instead of a power pulse
command, this improves readability of the function with the delays
added.

Matthias Kaehlcke (3):
  Bluetooth: hci_qca: Pass boolean 'on/off' to qca_send_power_pulse()
  Bluetooth: hci_qca: Move boot delay to qca_send_power_pulse()
  Bluetooth: hci_qca: Add delay after power-off pulse

 drivers/bluetooth/hci_qca.c | 18 +++++++++++-------
 1 file changed, 11 insertions(+), 7 deletions(-)

-- 
2.21.0.rc0.258.g878e2cd30e-goog