[PATCH net-next v2 4/6] net/faraday: Clear stale interrupts
flat view
STALE3676d
From: Joel Stanley <joel@jms.id.au>
Date: 2016-09-21 23:06:03
Also in:
lkml
Subsystem:
networking drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Revision v2 of 2 in this series.
Revisions (2)
- v1 [diff vs current]
- v2 current
From: Gavin Shan <redacted> There is stale interrupt (PHYSTS_CHG in ISR, bit#6 in 0x0) from the bootloader (uboot) when enabling the MAC. The stale interrupts aren't part of kernel and should be cleared. This clears the stale interrupts in ISR (0x0) when enabling the MAC. Signed-off-by: Gavin Shan <redacted> Signed-off-by: Joel Stanley <joel@jms.id.au> --- drivers/net/ethernet/faraday/ftgmac100.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/drivers/net/ethernet/faraday/ftgmac100.c b/drivers/net/ethernet/faraday/ftgmac100.c
index 47f512224b57..189373743ddf 100644
--- a/drivers/net/ethernet/faraday/ftgmac100.c
+++ b/drivers/net/ethernet/faraday/ftgmac100.c@@ -1112,6 +1112,7 @@ static int ftgmac100_poll(struct napi_struct *napi, int budget) static int ftgmac100_open(struct net_device *netdev) { struct ftgmac100 *priv = netdev_priv(netdev); + unsigned int status; int err; err = ftgmac100_alloc_buffers(priv);
@@ -1137,6 +1138,11 @@ static int ftgmac100_open(struct net_device *netdev) ftgmac100_init_hw(priv); ftgmac100_start_hw(priv, priv->use_ncsi ? 100 : 10); + + /* Clear stale interrupts */ + status = ioread32(priv->base + FTGMAC100_OFFSET_ISR); + iowrite32(status, priv->base + FTGMAC100_OFFSET_ISR); + if (netdev->phydev) phy_start(netdev->phydev); else if (priv->use_ncsi)
--
2.9.3