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

Message ID YzId7dQGWxMyXHEU@work
State Accepted
Commit 492baeb958b1a94b8d52ec3960f82079ebbbebfb
Headers show
Series [next] i2c: acpi: Replace zero-length array with DECLARE_FLEX_ARRAY() helper | expand

Commit Message

Gustavo A. R. Silva Sept. 26, 2022, 9:47 p.m. UTC 
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>
---
 drivers/i2c/i2c-core-acpi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/drivers/i2c/i2c-core-acpi.c b/drivers/i2c/i2c-core-acpi.c
index 08b561f0709d..da6568a20177 100644
--- a/drivers/i2c/i2c-core-acpi.c
+++ b/drivers/i2c/i2c-core-acpi.c
@@ -26,7 +26,7 @@  struct gsb_buffer {
 	union {
 		u16	wdata;
 		u8	bdata;
-		u8	data[0];
+		DECLARE_FLEX_ARRAY(u8, data);
 	};
 } __packed;