[PATCH v2] fs: exfat: Remove unused label code

[Andrew Goodbody]

Smatch reported a possible buffer overflow in exfat_set_label but it
turns out that this code is unused so just guard the function with
'#ifndef __UBOOT__' as well as exfat_get_label that is also unused and
the helper static find_label.

Signed-off-by: Andrew Goodbody <andrew.goodbody at linaro.org>
---
Changes in v2:
- Instead of removing the code just guard it with #ifndef __UBOOT__ to
  make future resyncs easier from upstream
- Link to v1: https://lore.kernel.org/r/20250717-exfat_label-v1-1-e15f28fd6c6b@linaro.org
---
 fs/exfat/exfat.h | 2 ++
 fs/exfat/node.c  | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/fs/exfat/exfat.h b/fs/exfat/exfat.h
index ca6f22b9d58..bd2965c3942 100644
--- a/fs/exfat/exfat.h
+++ b/fs/exfat/exfat.h
@@ -237,8 +237,10 @@ int exfat_rename(struct exfat* ef, const char* old_path, const char* new_path);
 void exfat_utimes(struct exfat_node* node, const struct timespec tv[2]);
 void exfat_update_atime(struct exfat_node* node);
 void exfat_update_mtime(struct exfat_node* node);
+#ifndef __UBOOT__
 const char* exfat_get_label(struct exfat* ef);
 int exfat_set_label(struct exfat* ef, const char* label);
+#endif /* __UBOOT__ */
 
 int exfat_soil_super_block(const struct exfat* ef);
 int exfat_mount(struct exfat* ef, const char* spec, const char* options);
diff --git a/fs/exfat/node.c b/fs/exfat/node.c
index 88b1357189c..b7406fbf3ed 100644
--- a/fs/exfat/node.c
+++ b/fs/exfat/node.c
@@ -1188,6 +1188,7 @@ void exfat_update_mtime(struct exfat_node* node)
 	node->is_dirty = true;
 }
 
+#ifndef __UBOOT__
 const char* exfat_get_label(struct exfat* ef)
 {
 	return ef->label;
@@ -1241,3 +1242,4 @@ int exfat_set_label(struct exfat* ef, const char* label)
 	strcpy(ef->label, label);
 	return 0;
 }
+#endif /* __UBOOT__ */

---
base-commit: 3b4604a40b9fd61b87e9d059fc56f04d36f1a380
change-id: 20250717-exfat_label-bf4af04ea293

Best regards,
-- 
Andrew Goodbody <andrew.goodbody at linaro.org>