X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=kernel%2Fdrivers%2Fchar%2Fhw_random%2Fcore.c;fp=kernel%2Fdrivers%2Fchar%2Fhw_random%2Fcore.c;h=cf25020576fa2bf08b83c00bad078ce303ad47f0;hb=52f993b8e89487ec9ee15a7fb4979e0f09a45b27;hp=6f497aa1b27654112bc048f6c207288394015386;hpb=c189ccac5702322ed843fe17057035b7222a59b6;p=kvmfornfv.git

diff --git a/kernel/drivers/char/hw_random/core.c b/kernel/drivers/char/hw_random/core.c
index 6f497aa1b..cf2502057 100644
--- a/kernel/drivers/char/hw_random/core.c
+++ b/kernel/drivers/char/hw_random/core.c
@@ -84,14 +84,14 @@ static size_t rng_buffer_size(void)
 
 static void add_early_randomness(struct hwrng *rng)
 {
-	unsigned char bytes[16];
 	int bytes_read;
+	size_t size = min_t(size_t, 16, rng_buffer_size());
 
 	mutex_lock(&reading_mutex);
-	bytes_read = rng_get_data(rng, bytes, sizeof(bytes), 1);
+	bytes_read = rng_get_data(rng, rng_buffer, size, 1);
 	mutex_unlock(&reading_mutex);
 	if (bytes_read > 0)
-		add_device_randomness(bytes, bytes_read);
+		add_device_randomness(rng_buffer, bytes_read);
 }
 
 static inline void cleanup_rng(struct kref *kref)