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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: linux-kernel@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: 9svrORBbqk-6u-QDItRPuXKUp9X8aE5C X-Authority-Analysis: v=2.4 cv=Wag8rUhX c=1 sm=1 tr=0 ts=6a0580ca cx=c_pps a=cmESyDAEBpBGqyK7t0alAg==:117 a=nuhDOHQX5FNHPW3J6Bj6AA==:17 a=IkcTkHD0fZMA:10 a=NGcC8JguVDcA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=DJpcGTmdVt4CTyJn9g5Z:22 a=VwQbUJbxAAAA:8 a=pGLkceISAAAA:8 a=EUspDBNiAAAA:8 a=CbO934nNXDxLm8dFh94A:9 a=QEXdDO2ut3YA:10 a=1OuFwYUASf3TG4hYMiVC:22 X-Proofpoint-ORIG-GUID: 9svrORBbqk-6u-QDItRPuXKUp9X8aE5C X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNTE0MDA3OCBTYWx0ZWRfX5l1EnJHxJcc8 HiWJcOtiEQO5+vSA8+NbxF/aGZyzmKxmJ+qam0056ek04myKHumK28UVSftwZH7YgL5yEfGsv9j ztJ+ZqQtGBQ+ANhINDozOeGUXmywJE+3m0e/WMhIHahwfFjrrNE5mlNbE1qRI5go5h/GDQzXbWh wuTkJspSPnZ+AO1JdwQylquSrFXcru/N5ApiDG9whmt1S2SEVYx2FAN3fP+tV+S+ZcagVa9R/ie LMn6pfd5xzThM9AD/M8/jD1g6JQpgbTmHabbfbLBd5NWw6RG93jWpF4ubhG1r+R2db8KOoWSU7H f9WSrN+iWyxfEM69jCqvkSHPq410gbvdo0YCKt9i4mbjber7z3lrlA6UD2hAp6767QYAUMLTcwy lMZFv6g9I06D+ndE4yzI46V/zONb+JWXnCptf+f9bfVofcMGo0hgHaaroW7Av/hIHwiVfMxgulr 8QF9KrDOXVTY3F9tLXg== 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 adultscore=0 malwarescore=0 spamscore=0 bulkscore=0 impostorscore=0 lowpriorityscore=0 clxscore=1015 phishscore=0 priorityscore=1501 suspectscore=0 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