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Diffstat (limited to 'samples/kfifo/bytestream-example.c')
-rw-r--r--samples/kfifo/bytestream-example.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/samples/kfifo/bytestream-example.c b/samples/kfifo/bytestream-example.c
index c406f03ee551..5a90aa527877 100644
--- a/samples/kfifo/bytestream-example.c
+++ b/samples/kfifo/bytestream-example.c
@@ -122,8 +122,10 @@ static ssize_t fifo_write(struct file *file, const char __user *buf,
ret = kfifo_from_user(&test, buf, count, &copied);
mutex_unlock(&write_lock);
+ if (ret)
+ return ret;
- return ret ? ret : copied;
+ return copied;
}
static ssize_t fifo_read(struct file *file, char __user *buf,
@@ -138,8 +140,10 @@ static ssize_t fifo_read(struct file *file, char __user *buf,
ret = kfifo_to_user(&test, buf, count, &copied);
mutex_unlock(&read_lock);
+ if (ret)
+ return ret;
- return ret ? ret : copied;
+ return copied;
}
static const struct proc_ops fifo_proc_ops = {