From 0b830198fb3c6ee0dbbe5aa98829eddbb27429b1 Mon Sep 17 00:00:00 2001
From: Jeroen Hofstee <jeroen@myspectrum.nl>
Date: Sun, 7 Jun 2015 17:30:38 +0200
Subject: [PATCH] net: davinci_emac: don't teardown inactive rx channel
Tearing down an unitialized rx channel causes a pending address hole
event to be queued. When booting linux it will report this pending
as something like "Address Hole seen by USB_OTG at address 57fff584",
since u-boot did not handled this interrupt. Prevent that by not
tearing down the rx channel, when not receiving.
Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
---
drivers/net/davinci_emac.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/net/davinci_emac.c b/drivers/net/davinci_emac.c
index 427ad3e6fa..04447953c9 100644
--- a/drivers/net/davinci_emac.c
+++ b/drivers/net/davinci_emac.c
@@ -598,7 +598,8 @@ static void davinci_eth_close(struct eth_device *dev)
debug_emac("+ emac_close\n");
davinci_eth_ch_teardown(EMAC_CH_TX); /* TX Channel teardown */
- davinci_eth_ch_teardown(EMAC_CH_RX); /* RX Channel teardown */
+ if (readl(&adap_emac->RXCONTROL) & 1)
+ davinci_eth_ch_teardown(EMAC_CH_RX); /* RX Channel teardown */
/* Reset EMAC module and disable interrupts in wrapper */
writel(1, &adap_emac->SOFTRESET);
--
2.39.5