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authorHerton Ronaldo Krzesinski <herton@mandriva.com.br>2010-03-02 03:44:41 -0800
committerDavid S. Miller <davem@davemloft.net>2010-03-02 03:44:41 -0800
commitb88aafd365bc6a2222e2d03ff320adea3a37f628 (patch)
tree519c4893ca656ff997bdd3e016d6bb4172faeec2 /drivers/net
parent4ab408dea0f0dba4dec0555f4f35b7ae703f5e91 (diff)
sis190: fix cable detect via link status poll
Some sis190 devices don't report LinkChange, so do polling for link status. Fixes http://bugzilla.kernel.org/show_bug.cgi?id=11926 Signed-off-by: Herton Ronaldo Krzesinski <herton@mandriva.com.br> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/sis190.c23
1 files changed, 18 insertions, 5 deletions
diff --git a/drivers/net/sis190.c b/drivers/net/sis190.c
index 80af4a44580e..760d9e83a465 100644
--- a/drivers/net/sis190.c
+++ b/drivers/net/sis190.c
@@ -285,6 +285,11 @@ struct sis190_private {
struct list_head first_phy;
u32 features;
u32 negotiated_lpa;
+ enum {
+ LNK_OFF,
+ LNK_ON,
+ LNK_AUTONEG,
+ } link_status;
};
struct sis190_phy {
@@ -750,6 +755,7 @@ static irqreturn_t sis190_interrupt(int irq, void *__dev)
if (status & LinkChange) {
netif_info(tp, intr, dev, "link change\n");
+ del_timer(&tp->timer);
schedule_work(&tp->phy_task);
}
@@ -922,12 +928,15 @@ static void sis190_phy_task(struct work_struct *work)
if (val & BMCR_RESET) {
// FIXME: needlessly high ? -- FR 02/07/2005
mod_timer(&tp->timer, jiffies + HZ/10);
- } else if (!(mdio_read_latched(ioaddr, phy_id, MII_BMSR) &
- BMSR_ANEGCOMPLETE)) {
+ goto out_unlock;
+ }
+
+ val = mdio_read_latched(ioaddr, phy_id, MII_BMSR);
+ if (!(val & BMSR_ANEGCOMPLETE) && tp->link_status != LNK_AUTONEG) {
netif_carrier_off(dev);
netif_warn(tp, link, dev, "auto-negotiating...\n");
- mod_timer(&tp->timer, jiffies + SIS190_PHY_TIMEOUT);
- } else {
+ tp->link_status = LNK_AUTONEG;
+ } else if ((val & BMSR_LSTATUS) && tp->link_status != LNK_ON) {
/* Rejoice ! */
struct {
int val;
@@ -1000,7 +1009,10 @@ static void sis190_phy_task(struct work_struct *work)
netif_info(tp, link, dev, "link on %s mode\n", p->msg);
netif_carrier_on(dev);
- }
+ tp->link_status = LNK_ON;
+ } else if (!(val & BMSR_LSTATUS) && tp->link_status != LNK_AUTONEG)
+ tp->link_status = LNK_OFF;
+ mod_timer(&tp->timer, jiffies + SIS190_PHY_TIMEOUT);
out_unlock:
rtnl_unlock();
@@ -1513,6 +1525,7 @@ static struct net_device * __devinit sis190_init_board(struct pci_dev *pdev)
tp->pci_dev = pdev;
tp->mmio_addr = ioaddr;
+ tp->link_status = LNK_OFF;
sis190_irq_mask_and_ack(ioaddr);