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wifi: carl9170: Replace zero-length array of trailing structs with flex-array

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Zero-length arrays are deprecated[1] and are being replaced with
flexible array members in support of the ongoing efforts to tighten the
FORTIFY_SOURCE routines on memcpy(), correctly instrument array indexing
with UBSAN_BOUNDS, and to globally enable -fstrict-flex-arrays=3.

Replace zero-length array with flexible-array member.

This results in no differences in binary output.

[1] https://github.com/KSPP/linux/issues/78

Cc: Christian Lamparter <chunkeey@googlemail.com>
Cc: Kalle Valo <kvalo@kernel.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Paolo Abeni <pabeni@redhat.com>
Cc: "Gustavo A. R. Silva" <gustavoars@kernel.org>
Cc: linux-wireless@vger.kernel.org
Cc: netdev@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Acked-by: Christian Lamparter <chunkeey@gmail.com>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://lore.kernel.org/r/20221118211146.never.395-kees@kernel.org
This commit is contained in:
Kees Cook 2022-11-18 13:11:47 -08:00 • committed by Kalle Valo
parent 4d79f6f34b
commit 7256f28767
1 changed files with 2 additions and 2 deletions
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4
drivers/net/wireless/ath/carl9170/fwcmd.h
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@ -118,10 +118,10 @@ struct carl9170_reg_list {
} __packed;
struct carl9170_write_reg {
struct {
DECLARE_FLEX_ARRAY(struct {
__le32 addr;
__le32 val;
} regs[0] __packed;
} __packed, regs);
} __packed;
struct carl9170_write_reg_byte {