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4c2b796be3
If STATUS_BUFFER_DONE is not set for a monitor status ring entry, we don't process the status ring until STATUS_BUFFER_DONE set for that status ring entry. During LMAC reset it may happen that hardware will not write STATUS_BUFFER_DONE tlv in status buffer, in that case we end up waiting for STATUS_BUFFER_DONE leading to backpressure on monitor status ring. To fix the issue, when HP (Head Pointer) + 1 entry is peeked and if DMA is not done and if HP + 2 entry's DMA done is set, replenish HP + 1 entry and start processing in next interrupt. If HP + 2 entry's DMA done is not set, poll onto HP + 1 entry DMA done to be set. Also, during monitor attach HP points to the end of the ring and TP (Tail Pointer) points to the start of the ring. Using ath11k_hal_srng_src_peek() may result in processing invalid buffer for the very first interrupt. Since, HW starts writing buffer from TP. To avoid this issue call ath11k_hal_srng_src_next_peek() instead of calling ath11k_hal_srng_src_peek(). Tested-on: IPQ5018 hw1.0 AHB WLAN.HK.2.6.0.1-00861-QCAHKSWPL_SILICONZ-1 Signed-off-by: Venkateswara Naralasetty <quic_vnaralas@quicinc.com> Co-developed-by: Tamizh Chelvam Raja <quic_tamizhr@quicinc.com> Signed-off-by: Tamizh Chelvam Raja <quic_tamizhr@quicinc.com> Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com> Link: https://msgid.link/20240429073624.736147-1-quic_tamizhr@quicinc.com |
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.