From: Thorsten Blum <thorsten.blum@linux.dev>
Date: Tue, 15 Apr 2025 09:03:55 +0000 (+0200)
Subject: ASoC: cs-amp-lib: Annotate struct cirrus_amp_efi_data with __counted_by()
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=fcdf212fd9b36c299d90229e9546c077db2215ce;p=users%2Fjedix%2Flinux-maple.git

ASoC: cs-amp-lib: Annotate struct cirrus_amp_efi_data with __counted_by()

Add the __counted_by() compiler attribute to the flexible array member
'data' to improve access bounds-checking via CONFIG_UBSAN_BOUNDS and
CONFIG_FORTIFY_SOURCE.

No functional changes intended.

Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Reviewed-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Link: https://patch.msgid.link/20250415090354.92211-2-thorsten.blum@linux.dev
Signed-off-by: Mark Brown <broonie@kernel.org>
---

diff --git a/include/sound/cs-amp-lib.h b/include/sound/cs-amp-lib.h
index f481148735e10..5459c221badfe 100644
--- a/include/sound/cs-amp-lib.h
+++ b/include/sound/cs-amp-lib.h
@@ -23,7 +23,7 @@ struct cirrus_amp_cal_data {
 struct cirrus_amp_efi_data {
 	u32 size;
 	u32 count;
-	struct cirrus_amp_cal_data data[];
+	struct cirrus_amp_cal_data data[] __counted_by(count);
 } __packed;
 
 /**