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From d313d16bbaea0f11a2e98f04a6c678b43c208915 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
Date: Fri, 26 Feb 2021 14:20:38 +0100
Subject: [PATCH] net: broadcom: bcm4908_enet: enable RX after processing
packets
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
When receiving a lot of packets hardware may run out of free
descriptiors and stop RX ring. Enable it every time after handling
received packets.
Fixes: 4feffeadbcb2 ("net: broadcom: bcm4908enet: add BCM4908 controller driver")
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20210226132038.29849-1-zajec5@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
drivers/net/ethernet/broadcom/bcm4908_enet.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/net/ethernet/broadcom/bcm4908_enet.c
+++ b/drivers/net/ethernet/broadcom/bcm4908_enet.c
@@ -592,6 +592,9 @@ static int bcm4908_enet_poll(struct napi
bcm4908_enet_intrs_on(enet);
}
+ /* Hardware could disable ring if it run out of descriptors */
+ bcm4908_enet_dma_rx_ring_enable(enet, &enet->rx_ring);
+
return handled;
}
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