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cb188e862c
Currently struct wmi_tdls_peer_capabilities defines: struct wmi_channel peer_chan_list[1]; Per the guidance in [1] this should be a flexible array, and at one point Gustavo was trying to fix this [2], but had questions about the correct behavior when the associated peer_chan_len is 0. I have been unable to determine if firmware requires that at least one record be present even if peer_chan_len is 0. But since that is the current behavior, follow the example from [3] and replace the one-element array with a union that contains both a flexible array and a single instance of the array element. This results in a struct that has the same footprint as the original, so no other driver changes are required. No functional changes, compile tested only. [1] https://docs.kernel.org/process/deprecated.html#zero-length-and-one-element-arrays [2] https://lore.kernel.org/linux-wireless/626ae2e7-66f8-423b-b17f-e75c1a6d29b3@embeddedor.com/ [3] https://lore.kernel.org/linux-wireless/202308301529.AC90A9EF98@keescook/ Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com> Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org> Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com> Link: https://msgid.link/20231213-wmi_host_mem_chunks_flexarray-v1-5-92922d92fa2c@quicinc.com
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 Restructured Text 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.