1 files changed, 1 insertions, 1 deletions

diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
index f7a55e9ff2f7..f6bda15396df 100644
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -748,7 +748,7 @@ static ssize_t devkmsg_write(struct kiocb *iocb, struct iov_iter *from)
                 return -ENOMEM;
 
         buf[len] = '\0';
-        if (copy_from_iter(buf, len, from) != len) {
+        if (!copy_from_iter_full(buf, len, from)) {
                 kfree(buf);
                 return -EFAULT;
         }