If vlan has been enabled. ifdown followed by ifup will lost hardware
related state.
remove duplicated operation in gfar_vlan_rx_register().
Signed-off-by: Yong Zhang <yong.zhang0@xxxxxxxxx>
---
drivers/net/gianfar.c | 12 ++++++++++--
1 files changed, 10 insertions(+), 2 deletions(-)
diff --git a/drivers/net/gianfar.c b/drivers/net/gianfar.c
index 4ae1d25..9cc6dd3 100644
--- a/drivers/net/gianfar.c
+++ b/drivers/net/gianfar.c
@@ -942,6 +942,7 @@ int startup_gfar(struct net_device *dev)
struct gfar __iomem *regs = priv->regs;
int err = 0;
u32 rctrl = 0;
+ u32 tctrl = 0;
u32 attrs = 0;
gfar_write(®s->imask, IMASK_INIT_CLEAR);
@@ -1117,11 +1118,19 @@ int startup_gfar(struct net_device *dev)
rctrl |= RCTRL_PADDING(priv->padding);
}
+ /* keep vlan related bits if it's enabled */
+ if (priv->vlgrp) {
+ rctrl |= RCTRL_VLEX | RCTRL_PRSDEP_INIT;
+ tctrl |= TCTRL_VLINS;
+ }
+
/* Init rctrl based on our settings */
gfar_write(&priv->regs->rctrl, rctrl);
if (dev->features & NETIF_F_IP_CSUM)
- gfar_write(&priv->regs->tctrl, TCTRL_INIT_CSUM);
+ tctrl |= TCTRL_INIT_CSUM;
+
+ gfar_write(&priv->regs->tctrl, tctrl);
/* Set the extraction length and index */
attrs = ATTRELI_EL(priv->rx_stash_size) |
@@ -1456,7 +1465,6 @@ static void gfar_vlan_rx_register(struct net_device *dev,
/* Enable VLAN tag extraction */
tempval = gfar_read(&priv->regs->rctrl);
- tempval |= RCTRL_VLEX;
tempval |= (RCTRL_VLEX | RCTRL_PRSDEP_INIT);
gfar_write(&priv->regs->rctrl, tempval);
} else {
--
1.6.0.4
--
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