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[199.106.103.254]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-23e3b5e9efbsm59096375ad.5.2025.07.21.07.09.14 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 21 Jul 2025 07:09:15 -0700 (PDT) Message-ID: Date: Mon, 21 Jul 2025 07:09:13 -0700 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH ath-next] wifi: ath12k: bring DFS support back for WCN7850 To: Baochen Qiang , Jeff Johnson , Baochen Qiang Cc: 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: Jeff Johnson Content-Language: en-US In-Reply-To: <20250721-ath12k-dfs-v1-1-065c31454f91@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Authority-Analysis: v=2.4 cv=ZtDtK87G c=1 sm=1 tr=0 ts=687e4a0d cx=c_pps a=IZJwPbhc+fLeJZngyXXI0A==:117 a=JYp8KDb2vCoCEuGobkYCKw==:17 a=IkcTkHD0fZMA:10 a=Wb1JkmetP80A:10 a=VwQbUJbxAAAA:8 a=EUspDBNiAAAA:8 a=Mae7F14F_SpBrmaiimsA:9 a=QEXdDO2ut3YA:10 a=uG9DUKGECoFWVXl0Dc02:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNzIxMDEyNiBTYWx0ZWRfX151a78bLxpZi zaP8V4dXFN9ViOrV3VOd0tVClsYt4aNu5lfFuFLQ7Dd9fN/AJpWNrOZ/bpBDxiWtBkNPgSpE8UC sQ9+aYOL8y1pCmR4PpMj/d+jD9IbQ/QQ3+nN5kBgE+MNKKD+iq6xQ46vR1IZ1CdjPihjpM2ZBrd 2guQsTdLPwMDcdYYHC+imjy0DgjluNZEOZbCGCZmYbo4OicxlzcYOjvmtO1OsW2dYUKlp8FHGdp K+rf+XnHFwAsdHOJJkQB8kuFVHkCYX5MLqVW3b60Mv0SHtYmpXGdRnkpHkCnnaxyIVLpQEf1UAH XffE78eEOiZizpgLeitSISZ+46KgIbNklLZlvNOhEyj/6DCqos9/G0lMI3ZB9Sm4OVfrxvT1iBG RfHDrNax7l/3TcSUSRqXqP7z0xyU2oX0rMixhLnejCHt+9TvScDRhur3s6As/7+gl14dXS70 X-Proofpoint-GUID: lzHpxAI9wJ0YMj041ewh2s0cqtKWuezQ X-Proofpoint-ORIG-GUID: lzHpxAI9wJ0YMj041ewh2s0cqtKWuezQ 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_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 bulkscore=0 clxscore=1015 spamscore=0 phishscore=0 malwarescore=0 priorityscore=1501 impostorscore=0 mlxlogscore=999 suspectscore=0 mlxscore=0 lowpriorityscore=0 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2505280000 definitions=main-2507210126 On 7/20/2025 7:27 PM, 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 > --- I'll update this to capture the following from Bugzilla: --- Comment #3 from Mihai Moldovan (ionic@ionic.de) --- Yeah, adding a second combination with DFS support seems to work fine. Tested-by: Mihai Moldovan (WLAN.HMT.1.1.c5-00284.1-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3)