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net: phy: meson-gxl: improve link-up behavior

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[ Upstream commit 2c87c6f9fbddc5b84d67b2fa3f432fcac6d99d93 ]

Sometimes the link comes up but no data flows. This patch fixes
this behavior. It's not clear what's the root cause of the issue.

According to the tests one other link-up issue remains.
In very rare cases the link isn't even reported as up.

Fixes: 84c8f773d2dc ("net: phy: meson-gxl: remove the use of .ack_callback()")
Tested-by: Erico Nunes <nunes.erico@gmail.com>
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/e3473452-a1f9-efcf-5fdd-02b6f44c3fcd@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Heiner Kallweit 2022-03-09 22:04:47 +01:00 committed by Greg Kroah-Hartman
parent 6c0d2f348b
commit 732c7172b7
1 changed files with 7 additions and 1 deletions
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8
drivers/net/phy/meson-gxl.c
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@ -243,7 +243,13 @@ static irqreturn_t meson_gxl_handle_interrupt(struct phy_device *phydev)
irq_status == INTSRC_ENERGY_DETECT)
return IRQ_HANDLED;
phy_trigger_machine(phydev);
/* Give PHY some time before MAC starts sending data. This works
* around an issue where network doesn't come up properly.
*/
if (!(irq_status & INTSRC_LINK_DOWN))
phy_queue_state_machine(phydev, msecs_to_jiffies(100));
else
phy_trigger_machine(phydev);
return IRQ_HANDLED;
}