Rng reads in chaoskey driver could return the same data under
the certain conditions.
Signed-off-by: Alexander Inyukhin <shur...@sectorb.msk.ru>
---
diff --git a/drivers/usb/misc/chaoskey.c b/drivers/usb/misc/chaoskey.c
--- a/drivers/usb/misc/chaoskey.c
+++ b/drivers/usb/misc/chaoskey.c
@@ -472,7 +472,7 @@ static int chaoskey_rng_read(struct hwrng *rng, void *data,
if (this_time > max)
this_time = max;
- memcpy(data, dev->buf, this_time);
+ memcpy(data, dev->buf + dev->used, this_time);
dev->used += this_time;
--
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