[PATCH] debugfs: drop pointless nul-termination in debugfs_read_file_bool()

[Rasmus Villemoes]

simple_read_from_buffer() doesn't care about any bytes in the buffer
beyond "available". Making the buffer nul-terminated is therefore
completely pointless.

Signed-off-by: Rasmus Villemoes <li...@rasmusvillemoes.dk>
---
 fs/debugfs/file.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/fs/debugfs/file.c b/fs/debugfs/file.c
index 686e0ad28788..9979d981e9be 100644
--- a/fs/debugfs/file.c
+++ b/fs/debugfs/file.c
@@ -773,7 +773,7 @@ EXPORT_SYMBOL_GPL(debugfs_create_atomic_t);
 ssize_t debugfs_read_file_bool(struct file *file, char __user *user_buf,
                               size_t count, loff_t *ppos)
 {
-       char buf[3];
+       char buf[2];
        bool val;
        int r;
        struct dentry *dentry = F_DENTRY(file);
@@ -789,7 +789,6 @@ ssize_t debugfs_read_file_bool(struct file *file, char 
__user *user_buf,
        else
                buf[0] = 'N';
        buf[1] = '\n';
-       buf[2] = 0x00;
        return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
 }
 EXPORT_SYMBOL_GPL(debugfs_read_file_bool);
-- 
2.29.2