Re: [PATCH 08/14] net: ks8851: Use 16-bit read of RXFC register
From: Andrew Lunn <andrew@lunn.ch>
Date: 2020-03-24 01:50:47
quoted hunk ↗ jump to hunk
@@ -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;
The datasheet says:
2. When software driver reads back Receive Frame Count (RXFCTR)
Register; the KSZ8851 will update both Receive Frame Header Status and
Byte Count Registers (RXFHSR/RXFHBCR)
Are you sure there is no side affect here?
Andrew