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authorJeffrey Hugo <quic_jhugo@quicinc.com>2025-10-07 13:57:50 +0200
committerJeff Hugo <jeff.hugo@oss.qualcomm.com>2025-10-14 08:30:39 -0600
commitfd6e385528d8f85993b7bfc6430576136bb14c65 (patch)
treeb53c8cc41d976d68d58b47779be90af2b76eeea2 /scripts/bpf_doc.py
parent48a710760e10a4f36e11233a21860796ba204b1e (diff)
accel/qaic: Fix bootlog initialization ordering
As soon as we queue MHI buffers to receive the bootlog from the device, we could be receiving data. Therefore all the resources needed to process that data need to be setup prior to queuing the buffers. We currently initialize some of the resources after queuing the buffers which creates a race between the probe() and any data that comes back from the device. If the uninitialized resources are accessed, we could see page faults. Fix the init ordering to close the race. Fixes: 5f8df5c6def6 ("accel/qaic: Add bootlog debugfs") Signed-off-by: Jeffrey Hugo <quic_jhugo@quicinc.com> Signed-off-by: Youssef Samir <youssef.abdulrahman@oss.qualcomm.com> Reviewed-by: Jeff Hugo <jeff.hugo@oss.qualcomm.com> Reviewed-by: Carl Vanderlip <carl.vanderlip@oss.qualcomm.com> Signed-off-by: Jeff Hugo <jeff.hugo@oss.qualcomm.com> Link: https://lore.kernel.org/r/20251007115750.332169-1-youssef.abdulrahman@oss.qualcomm.com
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