K 10
svn:author
V 3
dim
K 8
svn:date
V 27
2022-02-16T20:27:28.676636Z
K 7
svn:log
V 882
bwi: Fix clang 14 warning about possible unaligned access

On architectures with strict alignment requirements (e.g. arm), clang 14
warns about a packed struct which encloses a non-packed union:

In file included from sys/dev/bwi/bwimac.c:79:
sys/dev/bwi/if_bwivar.h:308:7: error: field iv_val within 'struct bwi_fw_iv' is less aligned than 'union (unnamed union at sys/dev/bwi/if_bwivar.h:305:2)' and is usually due to 'struct bwi_fw_iv' being packed, which can lead to unaligned accesses [-Werror,-Wunaligned-access]
	}			iv_val;
				^

It appears to help if you also add __packed to the inner union (i.e.
iv_val). No change to the layout is intended.

MFC after:	3 days
Differential Revision: https://reviews.freebsd.org/D34196

(cherry picked from commit 09d0a0fbe859e3fc7bbff0cf48c389b5e55b9e00)

Git Hash:   97b0011c809433cd2c32abb177b17fb08979cc69
Git Author: dim@FreeBSD.org
END