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51 lines
1.5 KiB
Diff
51 lines
1.5 KiB
Diff
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From c2e963057ca5635d6e5387623c3ad0c0b3123754 Mon Sep 17 00:00:00 2001
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From: Daniel Hellstrom <daniel@gaisler.com>
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Date: Wed, 1 Dec 2010 10:28:37 +0100
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Subject: [PATCH] GRETH: avoid writing bad speed/duplex when setting transfer mode
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Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>
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---
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drivers/net/greth.c | 19 ++++++++-----------
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1 files changed, 8 insertions(+), 11 deletions(-)
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--- a/drivers/net/greth.c
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+++ b/drivers/net/greth.c
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@@ -1236,29 +1236,26 @@ static void greth_link_change(struct net
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struct greth_private *greth = netdev_priv(dev);
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struct phy_device *phydev = greth->phy;
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unsigned long flags;
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-
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int status_change = 0;
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+ u32 ctrl;
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spin_lock_irqsave(&greth->devlock, flags);
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if (phydev->link) {
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if ((greth->speed != phydev->speed) || (greth->duplex != phydev->duplex)) {
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-
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- GRETH_REGANDIN(greth->regs->control,
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- ~(GRETH_CTRL_FD | GRETH_CTRL_SP | GRETH_CTRL_GB));
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+ ctrl = GRETH_REGLOAD(greth->regs->control) &
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+ ~(GRETH_CTRL_FD | GRETH_CTRL_SP | GRETH_CTRL_GB);
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if (phydev->duplex)
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- GRETH_REGORIN(greth->regs->control, GRETH_CTRL_FD);
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-
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- if (phydev->speed == SPEED_100) {
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-
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- GRETH_REGORIN(greth->regs->control, GRETH_CTRL_SP);
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- }
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+ ctrl |= GRETH_CTRL_FD;
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+ if (phydev->speed == SPEED_100)
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+ ctrl |= GRETH_CTRL_SP;
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else if (phydev->speed == SPEED_1000)
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- GRETH_REGORIN(greth->regs->control, GRETH_CTRL_GB);
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+ ctrl |= GRETH_CTRL_GB;
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+ GRETH_REGSAVE(greth->regs->control, ctrl);
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greth->speed = phydev->speed;
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greth->duplex = phydev->duplex;
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status_change = 1;
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