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Subject: Re: [PATCH v2] Bluetooth: btmtksdio: fix deadlock in close and reset
 paths
From: patchwork-bot+bluetooth@kernel.org
Message-Id: 
 <178647901335.1134064.2663051483826196708.git-patchwork-notify@kernel.org>
Date: Tue, 11 Aug 2026 20:10:13 +0000
References: 
 <81B94E6D2ACC0BFD+20260810-btmtksdio-deadlock-fix-v2-1-0eb31f9066d6@uniontech.com>
In-Reply-To: 
 <81B94E6D2ACC0BFD+20260810-btmtksdio-deadlock-fix-v2-1-0eb31f9066d6@uniontech.com>
To: ZhaoJinming <zhaojinming@uniontech.com>
Cc: luiz.dentz@gmail.com, linux-bluetooth@vger.kernel.org,
 marcel@holtmann.org, matthias.bgg@gmail.com,
 angelogioacchino.delregno@collabora.com, linux-kernel@vger.kernel.org,
 linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org

Hello:

This patch was applied to bluetooth/bluetooth-next.git (master)
by Luiz Augusto von Dentz <luiz.von.dentz@intel.com>:

On Mon, 10 Aug 2026 18:22:38 +0800 you wrote:
> btmtksdio_close() and btmtksdio_reset() call cancel_work_sync() on
> bdev->txrx_work while holding the sdio host lock, which is also acquired
> by btmtksdio_txrx_work().  If txrx_work is queued when close/reset runs,
> a worker thread may start it after the host lock is taken and block in
> sdio_claim_host(), while cancel_work_sync() waits for the work to
> finish.  The host lock is only released after cancel_work_sync()
> returns, so both sides wait forever, deadlocking close/reset.
> 
> [...]

Here is the summary with links:
  - [v2] Bluetooth: btmtksdio: fix deadlock in close and reset paths
    https://git.kernel.org/bluetooth/bluetooth-next/c/fca8fe614904

You are awesome, thank you!
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