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net: ks8851: Use 16-bit read of RXFC register

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The RXFC register is the only one being read using 8-bit accessors.
To make it easier to support the 16-bit accesses used by the parallel
bus variant of KS8851, use 16-bit accessor to read RXFC register as
well as neighboring RXFCTR register.

Remove ks8851_rdreg8() as it is not used anywhere anymore.

There should be no functional change.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: David S. Miller <davem@davemloft.net>
Cc: Lukas Wunner <lukas@wunner.de>
Cc: Petr Stetiar <ynezz@true.cz>
Cc: YueHaibing <yuehaibing@huawei.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Marek Vasut 2020-05-29 00:21:36 +02:00 committed by David S. Miller
parent 88cfedd0d7
commit aa39bf6730
1 changed files with 1 additions and 16 deletions
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17
drivers/net/ethernet/micrel/ks8851.c
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@ -236,21 +236,6 @@ static void ks8851_rdreg(struct ks8851_net *ks, unsigned op,
memcpy(rxb, trx + 2, rxl);
}
/**
* ks8851_rdreg8 - read 8 bit register from device
* @ks: The chip information
* @reg: The register address
*
* Read a 8bit register from the chip, returning the result
*/
static unsigned ks8851_rdreg8(struct ks8851_net *ks, unsigned reg)
{
u8 rxb[1];
ks8851_rdreg(ks, MK_OP(1 << (reg & 3), reg), rxb, 1);
return rxb[0];
}
/**
* ks8851_rdreg16 - read 16 bit register from device
* @ks: The chip information
@ -470,7 +455,7 @@ static void ks8851_rx_pkts(struct ks8851_net *ks)
unsigned rxstat;
u8 *rxpkt;
rxfc = ks8851_rdreg8(ks, KS_RXFC);
rxfc = (ks8851_rdreg16(ks, KS_RXFCTR) >> 8) & 0xff;
netif_dbg(ks, rx_status, ks->netdev,
"%s: %d packets\n", __func__, rxfc);