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Merge branch 'sh_eth'

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Ben Hutchings says:

====================
Fixes for sh_eth #4 v2

I'm continuing review and testing of Ethernet support on the R-Car H2
chip, with help from a colleague.  This series fixes a few more issues.

These are not tested on any of the other supported chips.

v2: Add note that the revert is not a pure revert.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2015-03-02 21:31:00 -05:00
commit 096b1c1728
1 changed files with 10 additions and 5 deletions
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15
drivers/net/ethernet/renesas/sh_eth.c
View file

@ -508,7 +508,6 @@ static struct sh_eth_cpu_data r8a779x_data = {
.tpauser = 1,
.hw_swap = 1,
.rmiimode = 1,
.shift_rd0 = 1,
};
static void sh_eth_set_rate_sh7724(struct net_device *ndev)
@ -1410,6 +1409,8 @@ static int sh_eth_txfree(struct net_device *ndev)
txdesc = &mdp->tx_ring[entry];
if (txdesc->status & cpu_to_edmac(mdp, TD_TACT))
break;
/* TACT bit must be checked before all the following reads */
rmb();
/* Free the original skb. */
if (mdp->tx_skbuff[entry]) {
dma_unmap_single(&ndev->dev, txdesc->addr,
@ -1447,6 +1448,8 @@ static int sh_eth_rx(struct net_device *ndev, u32 intr_status, int *quota)
limit = boguscnt;
rxdesc = &mdp->rx_ring[entry];
while (!(rxdesc->status & cpu_to_edmac(mdp, RD_RACT))) {
/* RACT bit must be checked before all the following reads */
rmb();
desc_status = edmac_to_cpu(mdp, rxdesc->status);
pkt_len = rxdesc->frame_length;
@ -1458,8 +1461,8 @@ static int sh_eth_rx(struct net_device *ndev, u32 intr_status, int *quota)
/* In case of almost all GETHER/ETHERs, the Receive Frame State
* (RFS) bits in the Receive Descriptor 0 are from bit 9 to
* bit 0. However, in case of the R8A7740, R8A779x, and
* R7S72100 the RFS bits are from bit 25 to bit 16. So, the
* bit 0. However, in case of the R8A7740 and R7S72100
* the RFS bits are from bit 25 to bit 16. So, the
* driver needs right shifting by 16.
*/
if (mdp->cd->shift_rd0)
@ -1526,6 +1529,7 @@ static int sh_eth_rx(struct net_device *ndev, u32 intr_status, int *quota)
skb_checksum_none_assert(skb);
rxdesc->addr = dma_addr;
}
wmb(); /* RACT bit must be set after all the above writes */
if (entry >= mdp->num_rx_ring - 1)
rxdesc->status |=
cpu_to_edmac(mdp, RD_RACT | RD_RFP | RD_RDEL);
@ -1538,7 +1542,7 @@ static int sh_eth_rx(struct net_device *ndev, u32 intr_status, int *quota)
/* If we don't need to check status, don't. -KDU */
if (!(sh_eth_read(ndev, EDRRR) & EDRRR_R)) {
/* fix the values for the next receiving if RDE is set */
if (intr_status & EESR_RDE) {
if (intr_status & EESR_RDE && mdp->reg_offset[RDFAR] != 0) {
u32 count = (sh_eth_read(ndev, RDFAR) -
sh_eth_read(ndev, RDLAR)) >> 4;
@ -2177,7 +2181,7 @@ static int sh_eth_start_xmit(struct sk_buff *skb, struct net_device *ndev)
}
spin_unlock_irqrestore(&mdp->lock, flags);
if (skb_padto(skb, ETH_ZLEN))
if (skb_put_padto(skb, ETH_ZLEN))
return NETDEV_TX_OK;
entry = mdp->cur_tx % mdp->num_tx_ring;
@ -2195,6 +2199,7 @@ static int sh_eth_start_xmit(struct sk_buff *skb, struct net_device *ndev)
}
txdesc->buffer_length = skb->len;
wmb(); /* TACT bit must be set after all the above writes */
if (entry >= mdp->num_tx_ring - 1)
txdesc->status |= cpu_to_edmac(mdp, TD_TACT | TD_TDLE);
else