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i2c: acpi: Replace zero-length array with DECLARE_FLEX_ARRAY() helper

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Zero-length arrays are deprecated and we are moving towards adopting
C99 flexible-array members, instead. So, replace zero-length arrays
declarations in anonymous union with the new DECLARE_FLEX_ARRAY()
helper macro.

This helper allows for flexible-array members in unions.

Link: https://github.com/KSPP/linux/issues/193
Link: https://github.com/KSPP/linux/issues/218
Link: https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
This commit is contained in:
Gustavo A. R. Silva 2022-09-26 16:47:25 -05:00 committed by Wolfram Sang
parent 342530f7fe
commit 492baeb958
1 changed files with 1 additions and 1 deletions
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drivers/i2c/i2c-core-acpi.c
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@ -26,7 +26,7 @@ struct gsb_buffer {
union {
u16 wdata;
u8 bdata;
u8 data[0];
DECLARE_FLEX_ARRAY(u8, data);
};
} __packed;