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[103.229.16.4]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2bd5c0605ddsm15089135ad.32.2026.05.14.00.59.01 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 14 May 2026 00:59:04 -0700 (PDT) Message-ID: <3ff9ed80-fd6c-4923-a1da-777ae8aac346@oss.qualcomm.com> Date: Thu, 14 May 2026 15:59:00 +0800 Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] wifi: ath11k: clear shared SRNG pointer state on restart To: kfarnung@gmail.com, Jeff Johnson , Muhammad Usama Anjum Cc: Jeff Johnson , linux-wireless@vger.kernel.org, ath11k@lists.infradead.org, linux-kernel@vger.kernel.org, santiagorr@riseup.net, stable@vger.kernel.org References: <20260513-kfarnung-ath11k-srng-clear-pointer-state-v1-1-bc700dd8b333@gmail.com> From: Baochen Qiang Content-Language: en-US In-Reply-To: <20260513-kfarnung-ath11k-srng-clear-pointer-state-v1-1-bc700dd8b333@gmail.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-GUID: om1h_V033X489Wj_DRrT6Ne2xMZn1diV X-Proofpoint-ORIG-GUID: om1h_V033X489Wj_DRrT6Ne2xMZn1diV X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNTE0MDA3OCBTYWx0ZWRfX1S/Q/yErnqUL /g9zQcj34dBbf1Llw+7cjyx628HboPsxgPLZir2KzWAe01tpCm5YMUDY4SuFeBoeWa3P/W1eh2z /WTEmbaVX6h4ltoQ1selWsRDE6671u4XDRYoJnqSMs8XSTEt2XFCcdyNU8mqWAuE1CBkXL3BhGO RPcBNU4fbmX0KPvl/aRORPLBn/FbeY02D/L08rTHWL4QcDbsX3CRU6Y8jfGUkYZ2yeQH5xOCWFK ZjFdWeXGh9B2J35vi3uDSuyPkTKPmEHzCJAno0pQI4dLEBU5jvvlzOsuNS3akUerjtpusVEZzoi ieL7A5yKi4nVUv6LeHgRu3fIdfcW5UN0UPrAzbMnB8GbT9R/i/+uLvRDvV+5JgTZZH9nRlTpRdc kxadOt/5iYCvwdB5jttcoeBEhKecc37yVquKx3j4Q0hOn2hPSmQhspBAl8NjyypetEuY9m8CBvh 3lhMy0nAPMbP9t9M2AA== X-Authority-Analysis: v=2.4 cv=PbDPQChd c=1 sm=1 tr=0 ts=6a0580ca cx=c_pps a=IZJwPbhc+fLeJZngyXXI0A==:117 a=nuhDOHQX5FNHPW3J6Bj6AA==:17 a=IkcTkHD0fZMA:10 a=NGcC8JguVDcA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=_glEPmIy2e8OvE2BGh3C:22 a=VwQbUJbxAAAA:8 a=pGLkceISAAAA:8 a=EUspDBNiAAAA:8 a=CbO934nNXDxLm8dFh94A:9 a=QEXdDO2ut3YA:10 a=uG9DUKGECoFWVXl0Dc02:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-05-14_01,2026-05-13_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 adultscore=0 suspectscore=0 lowpriorityscore=0 priorityscore=1501 bulkscore=0 phishscore=0 malwarescore=0 spamscore=0 clxscore=1015 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2605050000 definitions=main-2605140078 On 5/14/2026 12:52 PM, Kyle Farnung via B4 Relay wrote: > From: Kyle Farnung > > LMAC rings reuse the shared rdp/wrp pointer buffers without going > through the normal SRNG hw-init path that zeros non-LMAC ring > pointers. After restart, ath11k_hal_srng_clear() can therefore hand > stale hp/tp state from the previous firmware instance back to the new > one. > > Clear the shared pointer buffers while keeping the allocations in > place so restart still avoids reallocating SRNG DMA memory, but starts > with fresh ring-pointer state. > > Fixes: 32be3ca4cf78b ("wifi: ath11k: HAL SRNG: don't deinitialize and re-initialize again") > Cc: stable@vger.kernel.org > Link: https://lore.kernel.org/all/CAOPSVF04q6uvVdq8GTRLHBrVMdpt9=o9wVcFMc6f-yhmSBcZqQ@mail.gmail.com/ > Signed-off-by: Kyle Farnung Reviewed-by: Baochen Qiang