On the 5718, 5719 and 5720 serdes devices, powering down function 0
results in all the other ports being powered down. Add code to skip
function 0 power down.
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Michael Chan <mchan@xxxxxxxxxxxx>
Signed-off-by: Nithin Nayak Sujir <nsujir@xxxxxxxxxxxx>
---
drivers/net/ethernet/broadcom/tg3.c | 24 ++++++++++++++++++------
1 file changed, 18 insertions(+), 6 deletions(-)
diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c
index 728d42a..737f035 100644
--- a/drivers/net/ethernet/broadcom/tg3.c
+++ b/drivers/net/ethernet/broadcom/tg3.c
@@ -2957,6 +2957,23 @@ static int tg3_5700_link_polarity(struct tg3 *tp, u32 speed)
return 0;
}
+static bool tg3_phy_power_bug(struct tg3 *tp)
+{
+ if (tg3_asic_rev(tp) == ASIC_REV_5700 ||
+ tg3_asic_rev(tp) == ASIC_REV_5704 ||
+ (tg3_asic_rev(tp) == ASIC_REV_5780 &&
+ (tp->phy_flags & TG3_PHYFLG_MII_SERDES)) ||
+ (tg3_asic_rev(tp) == ASIC_REV_5717 &&
+ !tp->pci_fn) ||
+ ((tg3_asic_rev(tp) == ASIC_REV_5719 ||
+ tg3_asic_rev(tp) == ASIC_REV_5720) &&
+ (tp->phy_flags & TG3_PHYFLG_PHY_SERDES) &&
+ !tp->pci_fn))
+ return true;
+
+ return false;
+}
+
static void tg3_power_down_phy(struct tg3 *tp, bool do_low_power)
{
u32 val;
@@ -3016,12 +3033,7 @@ static void tg3_power_down_phy(struct tg3 *tp, bool do_low_power)
/* The PHY should not be powered down on some chips because
* of bugs.
*/
- if (tg3_asic_rev(tp) == ASIC_REV_5700 ||
- tg3_asic_rev(tp) == ASIC_REV_5704 ||
- (tg3_asic_rev(tp) == ASIC_REV_5780 &&
- (tp->phy_flags & TG3_PHYFLG_MII_SERDES)) ||
- (tg3_asic_rev(tp) == ASIC_REV_5717 &&
- !tp->pci_fn))
+ if (tg3_phy_power_bug(tp))
return;
if (tg3_chip_rev(tp) == CHIPREV_5784_AX ||
--
1.8.1.4
--
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