debugfs: move to new strtobool

No functional changes requires that we eat errors from strtobool.
If people want to not do this, then it should be fixed at a later date.

V2: Simplification suggested by Rusty Russell removes the need for
additional variable ret.

Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

diff --git a/fs/debugfs/file.c b/fs/debugfs/file.c
index 89d394d..568304d 100644 (file)
--- a/fs/debugfs/file.c
+++ b/fs/debugfs/file.c
@@ -429,25 +429,16 @@ static ssize_t write_file_bool(struct file *file, const char __user *user_buf,
 {
        char buf[32];
        int buf_size;
+       bool bv;
        u32 *val = file->private_data;
 
        buf_size = min(count, (sizeof(buf)-1));
        if (copy_from_user(buf, user_buf, buf_size))
                return -EFAULT;
 
-       switch (buf[0]) {
-       case 'y':
-       case 'Y':
-       case '1':
-               *val = 1;
-               break;
-       case 'n':
-       case 'N':
-       case '0':
-               *val = 0;
-               break;
-       }
-       
+       if (strtobool(buf, &bv) == 0)
+               *val = bv;
+
        return count;
 }