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Subject: Re: [PATCH v1] bluetooth: hci_qca: disable irqs when spinlock is
 acquired
From:   Marcel Holtmann <marcel@holtmann.org>
In-Reply-To: <1567571656-32403-1-git-send-email-c-hbandi@codeaurora.org>
Date:   Wed, 4 Sep 2019 16:06:53 +0200
Cc:     Johan Hedberg <johan.hedberg@gmail.com>, mka@chromium.org,
        linux-kernel@vger.kernel.org, linux-bluetooth@vger.kernel.org,
        hemantg@codeaurora.org, linux-arm-msm@vger.kernel.org,
        bgodavar@codeaurora.org, anubhavg@codeaurora.org
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Message-Id: <6F34A9CD-7C8F-4E5D-9A22-9F05CC2CF9BC@holtmann.org>
References: <1567571656-32403-1-git-send-email-c-hbandi@codeaurora.org>
To:     Harish Bandi <c-hbandi@codeaurora.org>
Sender: linux-bluetooth-owner@vger.kernel.org
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Hi Harish,

> Looks like Deadlock is observed in hci_qca while performing
> stress and stability tests. Since same lock is getting
> acquired from qca_wq_awake_rx and hci_ibs_tx_idle_timeout
> seeing spinlock recursion, irqs should be disable while
> acquiring the spinlock always.
> 
> Signed-off-by: Harish Bandi <c-hbandi@codeaurora.org>
> ---
> drivers/bluetooth/hci_qca.c | 10 ++++++----
> 1 file changed, 6 insertions(+), 4 deletions(-)

patch has been applied to bluetooth-stable tree.

Regards

Marcel