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USB: chaoskey read offset bug
Rng reads in chaoskey driver could return the same data under the certain conditions. Signed-off-by: Alexander Inyukhin <shurick@sectorb.msk.ru> Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -472,7 +472,7 @@ static int chaoskey_rng_read(struct hwrng *rng, void *data,
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if (this_time > max)
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this_time = max;
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memcpy(data, dev->buf, this_time);
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memcpy(data, dev->buf + dev->used, this_time);
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dev->used += this_time;
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