Re: [PATCH 2/2] virtio: rng: Handle oversized return buffers

[Andre Przywara]

Hi,

On 2/17/26 14:29, Kavin Gunasekara wrote:

If extra random bytes are returned, truncate and use the requested number
instead of returning an error.

Signed-off-by: Kavin Gunasekara <kavin.gunasek...@arm.com>

Reviewed-by: Andre Przywara <andre.przyw...@arm.com>

Cheers,
Andre

---
  drivers/virtio/virtio_rng.c | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/virtio/virtio_rng.c b/drivers/virtio/virtio_rng.c
index 90a371a59cc..c6de62142bb 100644
--- a/drivers/virtio/virtio_rng.c
+++ b/drivers/virtio/virtio_rng.c
@@ -46,7 +46,7 @@ static int virtio_rng_read(struct udevice *dev, void *data, 
size_t len)
                        ;

if (rsize > sg.length)

-                       return -EIO;
+                       rsize = sg.length;

memcpy(ptr, buf, rsize);

                len -= rsize;