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Mon, 13 Apr 2026 23:29:46 -0700 (PDT) Received: from hu-sumk-hyd.qualcomm.com ([202.46.23.25]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-82f0c50d40bsm12964090b3a.58.2026.04.13.23.29.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 13 Apr 2026 23:29:45 -0700 (PDT) From: Sumit Kumar Subject: [PATCH v2 0/2] bus: mhi: ep: Fix state_lock protection issues Date: Tue, 14 Apr 2026 11:59:39 +0530 Message-Id: <20260414-reset_worker_deadlock-v2-0-42fd682b45db@oss.qualcomm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-B4-Tracking: v=1; b=H4sIANTe3WkC/4XNTW7DIBAF4KtErEvEDMbGWfUeURQBM25Qfmggd VtFvntJ1F1ldzPSG+l97y4K58hFbFZ3kXmMJaZLDfiyEuHgLm8sI9UsUKEBAC0zF77tP1M+ct4 TOzqlcJQKUfeqG7rQk6jd98xD/Hq6213Nh1huKX8/Z0Z4fP8TR5AgkbUKQMZ5sq+plPX1w51CO p/X9Tx2fpFmCTHkWosdeQ+LiJ1HlNSojLY0eN+0c0irAPUS4pqWve01oVXzCKpFpGOytvfGD9D /RXbTNP0AIZLgl9UBAAA= X-Change-ID: 20251113-reset_worker_deadlock-0223907f7c9d To: Manivannan Sadhasivam , Alex Elder , Greg Kroah-Hartman Cc: mhi@lists.linux.dev, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, Veerabhadrarao Badiganti , Subramanian Ananthanarayanan , Akhil Vinod , Sumit Kumar X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; 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Signed-off-by: Sumit Kumar --- Changes in v2: - Move `mhi_ep_mmio_reset()` out of state mutex lock.(Mani). - Removed the mutex lock from `mhi_ep_handle_syserr()`, since the caller of mhi_ep_handle_syserr() holds the lock.(Mani) - Link to v1: https://lore.kernel.org/r/20260203-reset_worker_deadlock-v1-0-7ed889b5bf19@oss.qualcomm.com --- Sumit Kumar (2): bus: mhi: ep: Fix potential deadlock in mhi_ep_reset_worker() bus: mhi: ep: Add missing state_lock protection for mhi_state access drivers/bus/mhi/ep/main.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) --- base-commit: 6fa9041b7177f6771817b95e83f6df17b147c8c6 change-id: 20251113-reset_worker_deadlock-0223907f7c9d Best regards, -- Sumit Kumar