1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/char/hw_random/core.c b/drivers/char/hw_random/core.c
index 84cdf9025737..349b6edc5794 100644
--- a/drivers/char/hw_random/core.c
+++ b/drivers/char/hw_random/core.c
@@ -116,6 +116,10 @@ static ssize_t rng_dev_read(struct file *filp, char __user *buf,
                 err = -EAGAIN;
                 if (!bytes_read && (filp->f_flags & O_NONBLOCK))
                         goto out;
+                if (bytes_read < 0) {
+                        err = bytes_read;
+                        goto out;
+                }
 
                 err = -EFAULT;
                 while (bytes_read && size) {