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commit6a953dc4dbupstream. A new warning in clang points out when macro expansion might result in a GNU C statement expression. There is an instance of this in the mwifiex driver: drivers/net/wireless/marvell/mwifiex/cmdevt.c:217:34: warning: '}' and ')' tokens terminating statement expression appear in different macro expansion contexts [-Wcompound-token-split-by-macro] host_cmd->seq_num = cpu_to_le16(HostCmd_SET_SEQ_NO_BSS_INFO ^~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/net/wireless/marvell/mwifiex/fw.h:519:46: note: expanded from macro 'HostCmd_SET_SEQ_NO_BSS_INFO' (((type) & 0x000f) << 12); } ^ This does not appear to be a real issue. Removing the braces and replacing them with parentheses will fix the warning and not change the meaning of the code. Fixes:5e6e3a92b9("wireless: mwifiex: initial commit for Marvell mwifiex driver") Link: https://github.com/ClangBuiltLinux/linux/issues/1146 Reported-by: Andy Lavr <andy.lavr@gmail.com> Signed-off-by: Nathan Chancellor <natechancellor@gmail.com> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org> Link: https://lore.kernel.org/r/20200901070834.1015754-1-natechancellor@gmail.com Signed-off-by: Anders Roxell <anders.roxell@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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.