After checking all the available manuals, I have enough information to
conclude that the 'shift_rd0' flag is only relevant for the Ether cores
supporting so called "intelligent checksum" (and hence having CSMR) which
is indicated by the 'hw_crc' flag. Since all the relevant SoCs now have
both these flags set, we can at last get rid of the former flag...
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@xxxxxxxxxxxxxxxxxx>
---
drivers/net/ethernet/renesas/sh_eth.c | 5 +----
drivers/net/ethernet/renesas/sh_eth.h | 1 -
2 files changed, 1 insertion(+), 5 deletions(-)
Index: net/drivers/net/ethernet/renesas/sh_eth.c
===================================================================
--- net.orig/drivers/net/ethernet/renesas/sh_eth.c
+++ net/drivers/net/ethernet/renesas/sh_eth.c
@@ -537,7 +537,6 @@ static struct sh_eth_cpu_data r7s72100_d
.no_ade = 1,
.hw_crc = 1,
.tsu = 1,
- .shift_rd0 = 1,
};
static void sh_eth_chip_reset_r8a7740(struct net_device *ndev)
@@ -577,7 +576,6 @@ static struct sh_eth_cpu_data r8a7740_da
.hw_crc = 1,
.tsu = 1,
.select_mii = 1,
- .shift_rd0 = 1,
};
/* There is CPU dependent code */
@@ -820,7 +818,6 @@ static struct sh_eth_cpu_data sh7734_dat
.tsu = 1,
.hw_crc = 1,
.select_mii = 1,
- .shift_rd0 = 1,
};
/* SH7763 */
@@ -1421,7 +1418,7 @@ static int sh_eth_rx(struct net_device *
* the RFS bits are from bit 25 to bit 16. So, the
* driver needs right shifting by 16.
*/
- if (mdp->cd->shift_rd0)
+ if (mdp->cd->hw_crc)
desc_status >>= 16;
skb = mdp->rx_skbuff[entry];
Index: net/drivers/net/ethernet/renesas/sh_eth.h
===================================================================
--- net.orig/drivers/net/ethernet/renesas/sh_eth.h
+++ net/drivers/net/ethernet/renesas/sh_eth.h
@@ -490,7 +490,6 @@ struct sh_eth_cpu_data {
unsigned no_ade:1; /* E-DMAC DO NOT have ADE bit in EESR */
unsigned hw_crc:1; /* E-DMAC have CSMR */
unsigned select_mii:1; /* EtherC have RMII_MII (MII select register) */
- unsigned shift_rd0:1; /* shift Rx descriptor word 0 right by 16 */
unsigned rmiimode:1; /* EtherC has RMIIMODE register */
unsigned rtrate:1; /* EtherC has RTRATE register */
};
