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ASoC: SOF: control.h: 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/211
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>
Link: https://lore.kernel.org/r/YzIcZ11k8RiQtS2T@work
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Gustavo A. R. Silva 2022-09-26 16:40:55 -05:00 committed by Mark Brown
parent 5445e5db29
commit b264ef7969
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1 changed files with 3 additions and 3 deletions
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6
include/sound/sof/control.h
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@ -117,11 +117,11 @@ struct sof_ipc_ctrl_data {
/* control data - add new types if needed */ /* control data - add new types if needed */
union { union {
/* channel values can be used by volume type controls */ /* channel values can be used by volume type controls */
struct sof_ipc_ctrl_value_chan chanv[0]; DECLARE_FLEX_ARRAY(struct sof_ipc_ctrl_value_chan, chanv);
/* component values used by routing controls like mux, mixer */ /* component values used by routing controls like mux, mixer */
struct sof_ipc_ctrl_value_comp compv[0]; DECLARE_FLEX_ARRAY(struct sof_ipc_ctrl_value_comp, compv);
/* data can be used by binary controls */ /* data can be used by binary controls */
struct sof_abi_hdr data[0]; DECLARE_FLEX_ARRAY(struct sof_abi_hdr, data);
}; };
} __packed; } __packed;