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Mon, 21 Jul 2025 08:01:46 -0700 (PDT) X-Google-Smtp-Source: AGHT+IGOHmWE4iyguDMxAHTPOU1nCRim88f/pJDZPNsYN+kAb9LJOLyI2W/6u92FrBlgWXprwHe4bw== X-Received: by 2002:a05:6a20:6f8b:b0:232:a885:e84e with SMTP id adf61e73a8af0-2390dc2f805mr27534927637.25.1753110105474; Mon, 21 Jul 2025 08:01:45 -0700 (PDT) Received: from [192.168.225.142] ([157.49.224.24]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-759c8eb0e98sm5977496b3a.66.2025.07.21.08.01.42 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 21 Jul 2025 08:01:45 -0700 (PDT) Message-ID: <7ee5f1fe-0d0d-ce10-2e6b-8bc9488289dc@oss.qualcomm.com> Date: Mon, 21 Jul 2025 20:31:40 +0530 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Thunderbird/102.13.0 Subject: Re: [PATCH ath-next] wifi: ath12k: bring DFS support back for WCN7850 Content-Language: en-US To: Baochen Qiang , Jeff Johnson , Baochen Qiang Cc: Jeff Johnson , linux-wireless@vger.kernel.org, ath12k@lists.infradead.org, linux-kernel@vger.kernel.org, Mihai Moldovan References: <20250721-ath12k-dfs-v1-1-065c31454f91@oss.qualcomm.com> From: Vasanthakumar Thiagarajan In-Reply-To: <20250721-ath12k-dfs-v1-1-065c31454f91@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Authority-Analysis: v=2.4 cv=CZ4I5Krl c=1 sm=1 tr=0 ts=687e565c cx=c_pps a=m5Vt/hrsBiPMCU0y4gIsQw==:117 a=jjkvTE25TcCRIAzKtE2jAA==:17 a=IkcTkHD0fZMA:10 a=Wb1JkmetP80A:10 a=VwQbUJbxAAAA:8 a=EUspDBNiAAAA:8 a=Mae7F14F_SpBrmaiimsA:9 a=QEXdDO2ut3YA:10 a=IoOABgeZipijB_acs4fv:22 X-Proofpoint-ORIG-GUID: fh0EsvP4oNDoktubPDWvWOAoY4VMYXc5 X-Proofpoint-GUID: fh0EsvP4oNDoktubPDWvWOAoY4VMYXc5 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNzIxMDEzMyBTYWx0ZWRfXyuYEmcOBItoG WeybFCQFM4smjxX9aHYkzIsAL6Yx3xH48gmNiaPnQW2CLBe/WyM2ZQr52Tr/vC6pz0FRTe3gd9o 8M5I1BfuqcLKN+7gVHkWrFFKJiFRwUvAea+VeOUiP3u75veNHm1/LbYwRC+vv2ZevCgODEB8s6v qxdWOWl3S88jEvZoMxoAKxkovykX8kns0aGwK5HwAE8ehg9rZbPRciEg1NchcvI1oiLUs+QfuQ8 6Jvf3CX+RPRcwEEUOmZ6ZmuKUOlQU8X4pbiP4olG7gHz8pTyZiNAq8tBm2yRWkDpGlymixJA0TM vNGwctBmSb/oM15aTns+3/PPdvyENOQ8JEYtyCKU1XvXP1TcwrhNO7L9pcZSfnmFvA2TRNMkcT1 gOyVeP+pmwKqqROuNZkmdKeru/5uz7piB4rdwmevWLmRXo05t1uWv6u2c8RSsQMMvtLYPrkp X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-07-21_04,2025-07-21_02,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 suspectscore=0 mlxlogscore=999 impostorscore=0 clxscore=1015 mlxscore=0 lowpriorityscore=0 phishscore=0 adultscore=0 bulkscore=0 spamscore=0 malwarescore=0 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2505280000 definitions=main-2507210133 On 7/21/2025 7:57 AM, Baochen Qiang wrote: > Due to the restrict in MAC80211 that DFS (Dynamic Frequency Selection) > can't be enabled on multiple channels, commit 176f3009ae59 ("wifi: ath12k: > support 2 channels for single pdev device") removes DFS support in order > to support 2 channels concurrently, making AP mode not working on DFS > channels [1]. > > Revert portions of that commit to bring DFS back, and add a new > combination to support 2-channels concurrency. This is valid because the > MAC80211 restrict works on each individual combination, but does not care > about them as a whole, as far as DFS is concerned. > > This change applies to WCN7850 only, other chips are not affected. > > Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.1.c5-00284.1-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3 > > Fixes: 176f3009ae59 ("wifi: ath12k: support 2 channels for single pdev device") > Reported-by: Mihai Moldovan > Closes: https://bugzilla.kernel.org/show_bug.cgi?id=220346 # 1 > Signed-off-by: Baochen Qiang Reviewed-by: Vasanthakumar Thiagarajan