[U-Boot] [PATCH v2 28/45] net: mvpp2.c: Clear all buffer / descriptor areas before usage

[Stefan Roese]

This fixes problems noticed with the PPv2.2 A7k/8k port, when not all
elements of the descriptors had been cleared before use.

Signed-off-by: Stefan Roese <sr at denx.de>
Acked-by: Joe Hershberger <joe.hershberger at ni.com>

---

Changes in v2:
- Added Acked-by from Joe

 drivers/net/mvpp2.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/mvpp2.c b/drivers/net/mvpp2.c
index 06909e6a3c..b9e0fdcc82 100644
--- a/drivers/net/mvpp2.c
+++ b/drivers/net/mvpp2.c
@@ -4429,6 +4429,9 @@ static int mvpp2_base_probe(struct udevice *dev)
 		size += RX_BUFFER_SIZE;
 	}
 
+	/* Clear the complete area so that all descriptors are cleared */
+	memset(bd_space, 0, size);
+
 	/* Save base addresses for later use */
 	priv->base = (void *)dev_get_addr_index(dev, 0);
 	if (IS_ERR(priv->base))
-- 
2.12.1