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AKwUvBxxJg1J8ABf2X1SqwodB9Kuq3nuPHJrp7F6hhYYGDrXUmvc6mAwgvpnSEZ9yXuWPswnaj9tIs1KdgU=@vger.kernel.org X-Gm-Message-State: AFq9FYINJ5zJ2Fa9PvKh0oA0Lb+CTz/dsBOOdhj9Di1nY2TjzW20JMTw eyCwPFPvfvrhw22Q/VXYe43TlpXKVUFCNrMRfbEuRG38MrElgmgw1QZEs7AMz7So9/FTwyWmDwX mC295IOsA8WRXmw== X-Received: from wrzq5.prod.google.com ([2002:a05:6000:1365:b0:48d:ed96:9428]) (user=smostafa job=prod-delivery.src-stubby-dispatcher) by 2002:a05:600c:4e14:b0:4a1:d307:b526 with SMTP id 5b1f17b1804b1-4a1d7464034mr249704165e9.0.1792520348399; Tue, 20 Oct 2026 11:19:08 -0700 (PDT) Date: Tue, 20 Oct 2026 18:08:01 +0000 X-Mailing-List: dmaengine@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list Mime-Version: 1.0 X-Mailer: git-send-email 2.56.0.212.g129ede20d9-goog Message-ID: <20261020180804.140766-1-smostafa@google.com> Subject: [PATCH 0/2] dmaengine: qcom: bam_dma: Fixes for unbind From: Mostafa Saleh To: linux-kernel@vger.kernel.org, dmaengine@vger.kernel.org Cc: linux-arm-msm@vger.kernel.org, vkoul@kernel.org, Frank.Li@kernel.org, bartosz.golaszewski@oss.qualcomm.com, pramod.gurav@linaro.org, andy.gross@linaro.org, Mostafa Saleh Content-Type: text/plain; charset="UTF-8" On Lenovo Mini-x Gen 10 (X1P42100 based) I am using VFIO-platform to assing the QCE/BAM to VMs. During unbind: echo 1dc4000.dma-controller > /sys/bus/platform/drivers/bam-dma-engine/unbind echo 1dfa000.crypto > /sys/bus/platform/drivers/qcrypto/unbind I see a system reset quite often, looking more into this, that seems to be related to runtime PM, with those fixes I don't see that anymore. This patches apply on linux-next. Mostafa Saleh (2): dmaengine: qcom: bam_dma: Take a PM ref at remove() dmaengine: qcom: bam_dma: Do not touch remote BAM in remove() drivers/dma/qcom/bam_dma.c | 18 +++++++++++++----- 1 file changed, 13 insertions(+), 5 deletions(-) -- 2.56.0.212.g129ede20d9-goog