From 6410c1391a9c25ddedea7d66e9479603345546ed Mon Sep 17 00:00:00 2001 From: Maxime Chevallier Date: Mon, 10 Jun 2019 10:55:27 +0200 Subject: [PATCH] net: mvpp2: Only clear the stat counters at port init When first configuring a port on PPv2, we want to clear the internal counters so that we don't get values from previous boot stages. However, we can't really clear these counters when resetting the MAC, since there are valid reasons to do so while the port is being used, such as when reconfiguring the interface mode with the PHY. Signed-off-by: Maxime Chevallier Signed-off-by: David S. Miller --- drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c index 4b4d79611339..ee653125194e 100644 --- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c +++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c @@ -1359,13 +1359,8 @@ static int mvpp2_ethtool_get_sset_count(struct net_device *dev, int sset) static void mvpp2_mac_reset_assert(struct mvpp2_port *port) { - unsigned int i; u32 val; - /* Read the GOP statistics to reset the hardware counters */ - for (i = 0; i < ARRAY_SIZE(mvpp2_ethtool_regs); i++) - mvpp2_read_count(port, &mvpp2_ethtool_regs[i]); - val = readl(port->base + MVPP2_GMAC_CTRL_2_REG) | MVPP2_GMAC_PORT_RESET_MASK; writel(val, port->base + MVPP2_GMAC_CTRL_2_REG); @@ -4265,7 +4260,7 @@ static int mvpp2_port_init(struct mvpp2_port *port) struct mvpp2 *priv = port->priv; struct mvpp2_txq_pcpu *txq_pcpu; unsigned int thread; - int queue, err; + int queue, err, i; /* Checks for hardware constraints */ if (port->first_rxq + port->nrxqs > @@ -4372,6 +4367,10 @@ static int mvpp2_port_init(struct mvpp2_port *port) if (err) goto err_free_percpu; + /* Read the GOP statistics to reset the hardware counters */ + for (i = 0; i < ARRAY_SIZE(mvpp2_ethtool_regs); i++) + mvpp2_read_count(port, &mvpp2_ethtool_regs[i]); + return 0; err_free_percpu: -- 2.30.2