From: Peter Mamonov <pmamonov@gmail.com>
To: andrew@lunn.ch
Cc: Peter Mamonov <pmamonov@gmail.com>,
Florian Fainelli <f.fainelli@gmail.com>,
Heiner Kallweit <hkallweit1@gmail.com>,
"David S. Miller" <davem@davemloft.net>,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH net v3] net/phy: fix DP83865 10 Mbps HDX loopback disable function
Date: Wed, 18 Sep 2019 19:27:55 +0300 [thread overview]
Message-ID: <20190918162755.24024-1-pmamonov@gmail.com> (raw)
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: 4621bf129856 ("phy: Add file missed in previous commit.")
Signed-off-by: Peter Mamonov <pmamonov@gmail.com>
---
Changes since v2:
- None
Changes since v1:
- use BIT() macro
- fix debug message as well
drivers/net/phy/national.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/drivers/net/phy/national.c b/drivers/net/phy/national.c
index a221dd552c3c..a5bf0874c7d8 100644
--- a/drivers/net/phy/national.c
+++ b/drivers/net/phy/national.c
@@ -105,14 +105,17 @@ 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)
--
2.23.0
next reply other threads:[~2019-09-18 16:28 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-18 16:27 Peter Mamonov [this message]
2019-09-18 16:32 ` [PATCH net v3] net/phy: fix DP83865 10 Mbps HDX loopback disable function Andrew Lunn
2019-09-22 1:29 ` Jakub Kicinski
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