3.5.7.9 -stable review patch. If anyone has any objections, please let me know. ------------------ From: Nithin Sujir <nsujir@xxxxxxxxxxxx> commit 7c6cdead7cc9a99650d15497aae47d7472217eb1 upstream. Commit d13ba512cbba7de5d55d7a3b2aae7d83c8921457 ("tg3: Remove SPEED_UNKNOWN checks") cleaned up the autoneg advertisement by removing some dead code. One effect of this change was that the advertisement register would not be updated if autoneg is turned off. This exposed a bug on the 5715 device w.r.t linking. The 5715 defaults to advertise only 10Mb Full duplex. But with autoneg disabled, it needs the configured speed enabled in the advertisement register to link up. This patch adds the work around to advertise all speeds on the 5715 when autoneg is disabled. Reported-by: Marcin Miotk <marcinmiotk81@xxxxxxxxx> Reviewed-by: Benjamin Li <benli@xxxxxxxxxxxx> Signed-off-by: Nithin Nayak Sujir <nsujir@xxxxxxxxxxxx> Signed-off-by: Michael Chan <mchan@xxxxxxxxxxxx> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx> [ luis: backported by Nithin Sujir ] Signed-off-by: Luis Henriques <luis.henriques@xxxxxxxxxxxxx> --- drivers/net/ethernet/broadcom/tg3.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c index 4da6a86..ca3be73 100644 --- a/drivers/net/ethernet/broadcom/tg3.c +++ b/drivers/net/ethernet/broadcom/tg3.c @@ -3946,6 +3946,14 @@ static void tg3_phy_copper_begin(struct tg3 *tp) tp->link_config.active_speed = tp->link_config.speed; tp->link_config.active_duplex = tp->link_config.duplex; + if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5714) { + /* With autoneg disabled, 5715 only links up when the + * advertisement register has the configured speed + * enabled. + */ + tg3_writephy(tp, MII_ADVERTISE, ADVERTISE_ALL); + } + bmcr = 0; switch (tp->link_config.speed) { default: -- 1.8.1.2 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html