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[103.229.16.4]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-3990d75fc49sm10447855a91.12.2026.09.02.01.52.43 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 02 Sep 2026 01:52:47 -0700 (PDT) Message-ID: <163b2dba-0af9-4594-8067-be9e711bb4b4@oss.qualcomm.com> Date: Wed, 2 Sep 2026 16:52:39 +0800 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] coresight: fix trace ID search skipping pass-through NoC devices To: Leo Yan Cc: Suzuki K Poulose , Mike Leach , James Clark , Alexander Shishkin , Richard Cheng , coresight@lists.linaro.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org References: <20260817-fix-trace-id-assign-issue-v1-1-b2164e33f9fa@oss.qualcomm.com> <20260902082209.GT8904@e132581.arm.com> <28d5c8bf-87b1-4172-94a8-0e1b7ba1f083@oss.qualcomm.com> <20260902084538.GU8904@e132581.arm.com> Content-Language: en-US From: Jie Gan In-Reply-To: <20260902084538.GU8904@e132581.arm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwOTAyMDA3OCBTYWx0ZWRfX0LqJRmsTfIxz Nbh7ItzBLTbwLNnwiVjFESfzf7G7eH9R3g7PSzsFvIC0lSSuHEQEQVl1Omfgmp+O+sNiT18w6gi 03oxnMoUvoX9WUo04k07z7Xw69rYEloApLsvH/0ymOwdjkuRNXeUvS/vPAPPjlaM+teRWYU1kQX QL06ZV7otcm+YauB4xw7G/f3E5F7fOjudjJu9l3qHBWve3vfUCabQb+7KkMaaMAqS35AZU/5vck G7WPHJFVm42lNMBM6SxEJcrmZNzu3nCH4dzpXneYXZUDILWrKrgSVLO88X9k/BGghn+a6U1csT0 09YVMWQpc1HANhAagIHLh00IPK8IeXYzCnSnFA43AJ/tbSz2Te2T8ZZH5LzkpNrICd9doQOL/iy MzBPe7XEw+oWwHTi+bwG+NmdcDJXGcu7H63cJsUPE6RvF5lvhVLkHe1GFX1jTzncPNcmIYR2m7u RK8iHkRJdlLoeVYQZvw== X-Proofpoint-ORIG-GUID: peB9PT-qk__jUtxIDCTSRE4IYnsCf6NK X-Proofpoint-Spam-Info: AW1haW4tMjYwOTAyMDA3OCBTYWx0ZWRfX8wlashjsdDyr wDeiNfb/xwOfGkLHj55u0PzGLpq8+QyKNktrhCBCcMswtV6ZNjMI0DoW7lkYP3dBskTW55/AStP xmQ2inWAx/pn0iGDHPUvTQ4+7RN/kFM= X-Authority-Analysis: v=2.4 cv=LfkMLDfi c=1 sm=1 tr=0 ts=6a97e3e1 cx=c_pps a=0uOsjrqzRL749jD1oC5vDA==:117 a=nuhDOHQX5FNHPW3J6Bj6AA==:17 a=IkcTkHD0fZMA:10 a=VdqzKS8jKosA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=3WHJM1ZQz_JShphwDgj5:22 a=VwQbUJbxAAAA:8 a=EUspDBNiAAAA:8 a=ASdo0e-X16dllrNbtIEA:9 a=QEXdDO2ut3YA:10 a=mQ_c8vxmzFEMiUWkPHU9:22 X-Proofpoint-GUID: peB9PT-qk__jUtxIDCTSRE4IYnsCf6NK X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-09-02_01,2026-09-01_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 bulkscore=0 clxscore=1015 impostorscore=0 malwarescore=0 phishscore=0 lowpriorityscore=0 spamscore=0 priorityscore=1501 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2609020078 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260902_015251_161088_CAE89548 X-CRM114-Status: GOOD ( 24.77 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 9/2/2026 4:45 PM, Leo Yan wrote: > On Wed, Sep 02, 2026 at 04:35:11PM +0800, Jie Gan wrote: > > [...] > >> Hi Leo, >> >> Thanks for the suggestion. > > You're welcome! > >> I will fix this in the TNOC driver. I agree that there is no need to use >> additional error codes to report the failure. >> >> I will post the new fix patch after below patch[1] to be applied to avoid >> conflict. > > The patch in the link has no fix tag, but current patch is a simple fix. I called it as a fix because the TNOC device cannot be probed by the AMBA driver unless the PID is manually assigned. This is a hardware limitation rather than a driver issue. The problem is resolved by switching the device to use a platform driver, so I didnt add a fixes tag. I will send the simple fix first. Depending on which patch gets applied first, I'll respin the other one to avoid conflicts. Thanks, Jie > I'd suggest to give priority this patch - this is friendly for porting > to stable kernels. > > If there have dependency (based on your local test), you could explictly > mention the dependency in cover letter and resend the tnoc probe series. > > Thanks, > Leo > >> [1] https://lore.kernel.org/all/20260710-fix-tracenoc-probe-issue-v6-2-41eb36fef8d9@oss.qualcomm.com/