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Date: Mon, 7 Sep 2020 08:29:34 +0000 From: Kalle Valo <kvalo@...eaurora.org> To: Nathan Chancellor <natechancellor@...il.com> Cc: Amitkumar Karwar <amitkarwar@...il.com>, Ganapathi Bhat <ganapathi.bhat@....com>, Xinming Hu <huxinming820@...il.com>, linux-wireless@...r.kernel.org, netdev@...r.kernel.org, linux-kernel@...r.kernel.org, clang-built-linux@...glegroups.com, Nathan Chancellor <natechancellor@...il.com>, Andy Lavr <andy.lavr@...il.com> Subject: Re: [PATCH] mwifiex: Remove unnecessary braces from HostCmd_SET_SEQ_NO_BSS_INFO Nathan Chancellor <natechancellor@...il.com> wrote: > 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: 5e6e3a92b9a4 ("wireless: mwifiex: initial commit for Marvell mwifiex driver") > Link: https://github.com/ClangBuiltLinux/linux/issues/1146 > Reported-by: Andy Lavr <andy.lavr@...il.com> > Signed-off-by: Nathan Chancellor <natechancellor@...il.com> > Reviewed-by: Nick Desaulniers <ndesaulniers@...gle.com> Patch applied to wireless-drivers-next.git, thanks. 6a953dc4dbd1 mwifiex: Remove unnecessary braces from HostCmd_SET_SEQ_NO_BSS_INFO -- https://patchwork.kernel.org/patch/11747495/ https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
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