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Wed, 24 Apr 2024 13:51:41 GMT Received: from [10.253.14.221] (10.80.80.8) by nasanex01a.na.qualcomm.com (10.52.223.231) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.9; Wed, 24 Apr 2024 06:51:35 -0700 Message-ID: Date: Wed, 24 Apr 2024 21:51:33 +0800 Precedence: bulk X-Mailing-List: linux-bluetooth@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v6 1/2] Bluetooth: qca: Fix BT enable failure for QCA6390 To: Luiz Augusto von Dentz , Wren Turkal CC: Krzysztof Kozlowski , , , , , , 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> <8ae32009-5f5e-49a1-88a1-e330f0614f60@quicinc.com> <5e363318-c6e4-4874-8026-7940b434d583@linaro.org> <2020a858-c3d9-48a7-ad59-3691c6b98fb2@penguintechs.org> Content-Language: en-US From: quic_zijuhu In-Reply-To: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8bit X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nasanex01a.na.qualcomm.com (10.52.223.231) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: D-4jZkdp1eTa5dfwElRZT1IOQMppljE- X-Proofpoint-ORIG-GUID: D-4jZkdp1eTa5dfwElRZT1IOQMppljE- X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1011,Hydra:6.0.650,FMLib:17.11.176.26 definitions=2024-04-24_11,2024-04-24_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 priorityscore=1501 spamscore=0 mlxscore=0 mlxlogscore=999 clxscore=1015 adultscore=0 malwarescore=0 bulkscore=0 impostorscore=0 phishscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2404010003 definitions=main-2404240047 On 4/24/2024 9:49 PM, Luiz Augusto von Dentz wrote: > Hi Wren, > > On Wed, Apr 24, 2024 at 1:04 AM Wren Turkal wrote: >> >> On 4/23/24 9:31 PM, Krzysztof Kozlowski wrote: >>> On 24/04/2024 06:18, quic_zijuhu wrote: >>>> On 4/24/2024 12:10 PM, Krzysztof Kozlowski wrote: >>>>> 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 >>>>>>>> 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 >>>>>>>> Tested-by: Wren Turkal >>>>>>> >>>>>>> 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? >>>>> >>>> Bartosz' patch have basic serious mistook and logic error and have no >>>> any help for QCA6390, and it is not suitable regarding DTS usage. >>> >>> Really? Why you did not respond with comments then? Considering how >>> imprecise and vague you are in describing real issues, I have doubts in >>> your judgment here as well. >> >> Please slow down here. Zijun's patch works and Bartosz's patch does not. >> I don't think Zijun means any ill intent. I am replying to Bartosz's >> patch right now. > > Ok, that is great feedback, so I might be picking up the Zijun v7 set > if we don't find any major problems with it. > thank you, we will start to fix this issue for other product customer have reported to us with different fix. >>> >>> Best regards, >>> Krzysztof >>> >> >> -- >> You're more amazing than you think! > > >