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tg3: Update link_up flag for phylib devices 

Commit f4a46d1f46 introduced a bug where
the ifconfig stats would remain 0 for phylib devices. This is due to
tp->link_up flag never becoming true causing tg3_periodic_fetch_stats()
to return.

The link_up flag was being updated in tg3_test_and_report_link_chg()
after setting up the phy. This function however, is not called for
phylib devices since the driver does not do the phy setup.

This patch moves the link_up flag update into the common
tg3_link_report() function that gets called for phylib devices as well
for non phylib devices when the link state changes.

To avoid updating link_up twice, we replace tg3_carrier_...() calls that
are followed by tg3_link_report(), with netif_carrier_...(). We can then
remove the unused tg3_carrier_on() function.

CC: <stable@vger.kernel.org>
Reported-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Nithin Nayak Sujir <nsujir@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
hifive-unleashed-5.1
Nithin Sujir 2013-03-08 08:01:24 +00:00 committed by David S. Miller
parent ddf64354af
commit 84421b99ce
1 changed files with 5 additions and 9 deletions
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14
drivers/net/ethernet/broadcom/tg3.c
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@ -1869,6 +1869,8 @@ static void tg3_link_report(struct tg3 *tp)
tg3_ump_link_report(tp);
}
tp->link_up = netif_carrier_ok(tp->dev);
}
static u16 tg3_advert_flowctrl_1000X(u8 flow_ctrl)
@ -2522,12 +2524,6 @@ static int tg3_phy_reset_5703_4_5(struct tg3 *tp)
return err;
}
static void tg3_carrier_on(struct tg3 *tp)
{
netif_carrier_on(tp->dev);
tp->link_up = true;
}
static void tg3_carrier_off(struct tg3 *tp)
{
netif_carrier_off(tp->dev);
@ -2553,7 +2549,7 @@ static int tg3_phy_reset(struct tg3 *tp)
return -EBUSY;
if (netif_running(tp->dev) && tp->link_up) {
tg3_carrier_off(tp);
netif_carrier_off(tp->dev);
tg3_link_report(tp);
}
@ -4262,9 +4258,9 @@ static bool tg3_test_and_report_link_chg(struct tg3 *tp, int curr_link_up)
{
if (curr_link_up != tp->link_up) {
if (curr_link_up) {
tg3_carrier_on(tp);
netif_carrier_on(tp->dev);
} else {
tg3_carrier_off(tp);
netif_carrier_off(tp->dev);
if (tp->phy_flags & TG3_PHYFLG_MII_SERDES)
tp->phy_flags &= ~TG3_PHYFLG_PARALLEL_DETECT;
}