zero-byte read

1 files changed, 6 insertions, 1 deletions

diff --git a/drivers/char/random.c b/drivers/char/random.c
index 157a0b3..254407b 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -1292,8 +1292,13 @@ random_read(struct file *file, char __user *buf, size_t nbytes, loff_t *ppos)
 {
 	ssize_t n, retval = 0, count = 0;
 
-	if (nbytes == 0)
+/*
+ * Kludge: zero-byte read:  Fill the pool from upstream sources.
+ */
+	if (nbytes == 0){
+                fill_pool(&blocking_pool, 0);
 		return 0;
+        }
 
 	while (nbytes > 0) {
 		n = nbytes;