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Message-ID: <dfe18768-f6da-4c60-880d-deeae3c3b04d@linaro.org>
Date: Wed, 24 Apr 2024 06:10:07 +0200
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Subject: Re: [PATCH v6 1/2] Bluetooth: qca: Fix BT enable failure for QCA6390
To: quic_zijuhu <quic_zijuhu@quicinc.com>, luiz.dentz@gmail.com,
 luiz.von.dentz@intel.com, marcel@holtmann.org
Cc: linux-bluetooth@vger.kernel.org, bartosz.golaszewski@linaro.org,
 wt@penguintechs.org, regressions@lists.linux.dev, kernel@quicinc.com
References: <1713919602-5812-1-git-send-email-quic_zijuhu@quicinc.com>
 <1713919602-5812-2-git-send-email-quic_zijuhu@quicinc.com>
 <349b27a5-d2d3-46f1-b002-44f81e0cedef@linaro.org>
 <e8cd122d-e342-45c2-b078-a4ca2d8dcfff@quicinc.com>
From: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
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In-Reply-To: <e8cd122d-e342-45c2-b078-a4ca2d8dcfff@quicinc.com>
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On 24/04/2024 06:07, quic_zijuhu wrote:
> On 4/24/2024 12:06 PM, Krzysztof Kozlowski wrote:
>> On 24/04/2024 02:46, Zijun Hu wrote:
>>> Commit 56d074d26c58 ("Bluetooth: hci_qca: don't use IS_ERR_OR_NULL()
>>> with gpiod_get_optional()") will cause below serious regression issue:
>>>
>>> BT can't be enabled any more after below steps:
>>> cold boot -> enable BT -> disable BT -> BT enable failure
>>> if property enable-gpios is not configured within DT|ACPI for QCA6390.
>>>
>>> The commit wrongly changes flag @power_ctrl_enabled set logic for this
>>> case as shown by its below code applet and causes this serious issue.
>>> qcadev->bt_en = devm_gpiod_get_optional(&serdev->dev, "enable",
>>>                                                GPIOD_OUT_LOW);
>>> - if (IS_ERR_OR_NULL(qcadev->bt_en)) {
>>> + if (IS_ERR(qcadev->bt_en)) {
>>>   	dev_warn(&serdev->dev, "failed to acquire enable gpio\n");
>>> 	power_ctrl_enabled = false;
>>>   }
>>>
>>> Fixed by reverting the mentioned commit for QCA6390.
>>>
>>> Fixes: 56d074d26c58 ("Bluetooth: hci_qca: don't use IS_ERR_OR_NULL() with gpiod_get_optional()")
>>> Reported-by: Wren Turkal <wt@penguintechs.org>
>>> Link: https://bugzilla.kernel.org/show_bug.cgi?id=218726
>>> Link: https://lore.kernel.org/linux-bluetooth/ea20bb9b-6b60-47fc-ae42-5eed918ad7b4@quicinc.com/T/#m73d6a71d2f454bb03588c66f3ef7912274d37c6f
>>> Signed-off-by: Zijun Hu <quic_zijuhu@quicinc.com>
>>> Tested-by: Wren Turkal <wt@penguintechs.org>
>>
>> No, Bartosz' patch should go.
>>
> what is Bartosz' patch.

Srsly? You were Cc'ed on it. How many upstream patches on upstream
mailing lists do you receive that you lost track of them?

Best regards,
Krzysztof