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net/phy: fix DP83865 10 Mbps HDX loopback disable function

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[ Upstream commit e47488b2df7f9cb405789c7f5d4c27909fc597ae ]

According to the DP83865 datasheet "the 10 Mbps HDX loopback can be
disabled in the expanded memory register 0x1C0.1". The driver erroneously
used bit 0 instead of bit 1.

Fixes: 4621bf1298 ("phy: Add file missed in previous commit.")
Signed-off-by: Peter Mamonov <pmamonov@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Peter Mamonov 2019-09-18 19:27:55 +03:00 committed by Greg Kroah-Hartman
parent 831d082be7
commit 6ea3bc4125
1 changed files with 6 additions and 3 deletions
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9
drivers/net/phy/national.c
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@ -110,14 +110,17 @@ static void ns_giga_speed_fallback(struct phy_device *phydev, int mode)
static void ns_10_base_t_hdx_loopack(struct phy_device *phydev, int disable)
{
u16 lb_dis = BIT(1);
if (disable)
ns_exp_write(phydev, 0x1c0, ns_exp_read(phydev, 0x1c0) | 1);
ns_exp_write(phydev, 0x1c0,
ns_exp_read(phydev, 0x1c0) | lb_dis);
else
ns_exp_write(phydev, 0x1c0,
ns_exp_read(phydev, 0x1c0) & 0xfffe);
ns_exp_read(phydev, 0x1c0) & ~lb_dis);
pr_debug("10BASE-T HDX loopback %s\n",
(ns_exp_read(phydev, 0x1c0) & 0x0001) ? "off" : "on");
(ns_exp_read(phydev, 0x1c0) & lb_dis) ? "off" : "on");
}
static int ns_config_init(struct phy_device *phydev)