evie/android_kernel_oneplus_msm8998
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[PATCH] sis190: dummy read is required by the status register

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Add a dummy read before accessing the status register

SiS driver suggests it.

Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
This commit is contained in:
Francois Romieu 2005-07-30 13:15:01 +02:00 • committed by Jeff Garzik
parent 9ede109bbe
commit fc10c39d79
1 changed files with 8 additions and 1 deletions
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9
drivers/net/sis190.c
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@ -383,6 +383,12 @@ static int __mdio_read(struct net_device *dev, int phy_id, int reg)
return mdio_read(tp->mmio_addr, phy_id, reg); return mdio_read(tp->mmio_addr, phy_id, reg);
} }
static u16 mdio_read_latched(void __iomem *ioaddr, int phy_id, int reg)
{
mdio_read(ioaddr, phy_id, reg);
return mdio_read(ioaddr, phy_id, reg);
}
static u16 __devinit sis190_read_eeprom(void __iomem *ioaddr, u32 reg) static u16 __devinit sis190_read_eeprom(void __iomem *ioaddr, u32 reg)
{ {
u16 data = 0xffff; u16 data = 0xffff;
@ -881,7 +887,8 @@ static void sis190_phy_task(void * data)
if (val & BMCR_RESET) { if (val & BMCR_RESET) {
// FIXME: needlessly high ? -- FR 02/07/2005 // FIXME: needlessly high ? -- FR 02/07/2005
mod_timer(&tp->timer, jiffies + HZ/10); mod_timer(&tp->timer, jiffies + HZ/10);
} else if (!(mdio_read(ioaddr, phy_id, MII_BMSR) & BMSR_ANEGCOMPLETE)) { } else if (!(mdio_read_latched(ioaddr, phy_id, MII_BMSR) &
BMSR_ANEGCOMPLETE)) {
net_link(tp, KERN_WARNING "%s: PHY reset until link up.\n", net_link(tp, KERN_WARNING "%s: PHY reset until link up.\n",
dev->name); dev->name);
mdio_write(ioaddr, phy_id, MII_BMCR, val | BMCR_RESET); mdio_write(ioaddr, phy_id, MII_BMCR, val | BMCR_RESET);