linux-kernel - [PATCH net-next 05/13] net: mvpp2: do not set the XLG MAC in reset when disabling a port

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Date:   Fri, 15 Feb 2019 16:32:33 +0100
From:   Antoine Tenart <antoine.tenart@...tlin.com>
To:     davem@...emloft.net, linux@...linux.org.uk
Cc:     Antoine Tenart <antoine.tenart@...tlin.com>,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        thomas.petazzoni@...tlin.com, maxime.chevallier@...tlin.com,
        gregory.clement@...tlin.com, miquel.raynal@...tlin.com,
        nadavh@...vell.com, stefanc@...vell.com, ymarkman@...vell.com,
        mw@...ihalf.com
Subject: [PATCH net-next 05/13] net: mvpp2: do not set the XLG MAC in reset when disabling a port

This patch prevents the PPv2 driver to put the XPCS in reset while
disabling a port. A port and the XPCS are two different blocks, and a
port can be used without the XPCS. Their configuration should be done
separately, which is already the case in the driver except for this one
example.

Signed-off-by: Antoine Tenart <antoine.tenart@...tlin.com>
---
 drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
index c8bab294f4c7..2c1de23ca267 100644
--- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
+++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
@@ -1210,10 +1210,6 @@ static void mvpp2_port_disable(struct mvpp2_port *port)
 		val = readl(port->base + MVPP22_XLG_CTRL0_REG);
 		val &= ~MVPP22_XLG_CTRL0_PORT_EN;
 		writel(val, port->base + MVPP22_XLG_CTRL0_REG);
-
-		/* Disable & reset should be done separately */
-		val &= ~MVPP22_XLG_CTRL0_MAC_RESET_DIS;
-		writel(val, port->base + MVPP22_XLG_CTRL0_REG);
 	} else {
 		val = readl(port->base + MVPP2_GMAC_CTRL_0_REG);
 		val &= ~(MVPP2_GMAC_PORT_EN_MASK);
-- 
2.20.1