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Message-ID: <5e5e869c-da12-4818-837e-55709f0c4db9@kernel.org>
Date: Fri, 3 May 2024 12:16:25 +0200
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Subject: Re: [PATCH v1] Bluetooth: qca: Fix BT enable failure again for
 QCA6390 after warm reboot
To: Zijun Hu <quic_zijuhu@quicinc.com>, luiz.dentz@gmail.com,
 luiz.von.dentz@intel.com, marcel@holtmann.org
Cc: linux-bluetooth@vger.kernel.org, wt@penguintechs.org,
 regressions@lists.linux.dev, stable@vger.kernel.org
References: <1714658761-15326-1-git-send-email-quic_zijuhu@quicinc.com>
From: Krzysztof Kozlowski <krzk@kernel.org>
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In-Reply-To: <1714658761-15326-1-git-send-email-quic_zijuhu@quicinc.com>
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On 02/05/2024 16:06, Zijun Hu wrote:
> Commit 272970be3dab ("Bluetooth: hci_qca: Fix driver shutdown on closed
> serdev") will cause below regression issue:
> 
> BT can't be enabled after below steps:
> cold boot -> enable BT -> disable BT -> warm reboot -> BT enable failure
> if property enable-gpios is not configured within DT|ACPI for QCA6390.
> 
> The commit is to fix a use-after-free issue within qca_serdev_shutdown()
> during reboot, but also introduces this regression issue regarding above
> steps since the VSC is not sent to reset controller during warm reboot.
> 
> Fixed by sending the VSC to reset controller within qca_serdev_shutdown()
> once BT was ever enabled, and the use-after-free issue is also be fixed
> by this change since serdev is still opened when send to serdev.
> 
> Fixes: 272970be3dab ("Bluetooth: hci_qca: Fix driver shutdown on closed serdev")
> Cc: stable@vger.kernel.org
> Reported-by: Wren Turkal <wt@penguintechs.org>
> Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218726
> Signed-off-by: Zijun Hu <quic_zijuhu@quicinc.com>
> Tested-by: Wren Turkal <wt@penguintechs.org>
> ---
>  drivers/bluetooth/hci_qca.c | 5 ++---

I don't think this is v1. Version your patches properly and provide
changelog.

I asked already *two times*:
1. On which kernel did you test it?
2. On which hardware did you test it?

I am not interested in any replies like "I wrote something on bugzilla".
I am really fed up with your elusive, time-wasting replies, so be
specific here.

Best regards,
Krzysztof