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authorFlorian Fainelli <f.fainelli@gmail.com>2020-02-05 23:32:04 +0300
committerDavid S. Miller <davem@davemloft.net>2020-02-06 16:28:52 +0300
commit263a425a482fc495d6d3f9a29b9103a664c38b69 (patch)
tree88d60088f56da62fb5300f3e245cbc5b1999bb02 /drivers/net
parent21b5f672fb2eb1366dedc4ac9d32431146b378d3 (diff)
downloadlinux-263a425a482fc495d6d3f9a29b9103a664c38b69.tar.xz
net: systemport: Avoid RBUF stuck in Wake-on-LAN mode
After a number of suspend and resume cycles, it is possible for the RBUF to be stuck in Wake-on-LAN mode, despite the MPD enable bit being cleared which instructed the RBUF to exit that mode. Avoid creating that problematic condition by clearing the RX_EN and TX_EN bits in the UniMAC prior to disable the Magic Packet Detector logic which is guaranteed to make the RBUF exit Wake-on-LAN mode. Fixes: 83e82f4c706b ("net: systemport: add Wake-on-LAN support") Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/ethernet/broadcom/bcmsysport.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/ethernet/broadcom/bcmsysport.c b/drivers/net/ethernet/broadcom/bcmsysport.c
index f07ac0e0af59..e0611cba87f9 100644
--- a/drivers/net/ethernet/broadcom/bcmsysport.c
+++ b/drivers/net/ethernet/broadcom/bcmsysport.c
@@ -2736,6 +2736,9 @@ static int __maybe_unused bcm_sysport_resume(struct device *d)
umac_reset(priv);
+ /* Disable the UniMAC RX/TX */
+ umac_enable_set(priv, CMD_RX_EN | CMD_TX_EN, 0);
+
/* We may have been suspended and never received a WOL event that
* would turn off MPD detection, take care of that now
*/