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authorHeiner Kallweit <hkallweit1@gmail.com>2022-03-10 00:04:47 +0300
committerJakub Kicinski <kuba@kernel.org>2022-03-11 01:57:02 +0300
commit2c87c6f9fbddc5b84d67b2fa3f432fcac6d99d93 (patch)
treed77cd85c355ea8dbc625e76ce34510a7f83cdf5f /drivers/net/phy
parent00b022f8f876a3a036b0df7f971001bef6398605 (diff)
downloadlinux-2c87c6f9fbddc5b84d67b2fa3f432fcac6d99d93.tar.xz
net: phy: meson-gxl: improve link-up behavior
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>
Diffstat (limited to 'drivers/net/phy')
-rw-r--r--drivers/net/phy/meson-gxl.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/net/phy/meson-gxl.c b/drivers/net/phy/meson-gxl.c
index c49062ad72c6..73f7962a37d3 100644
--- a/drivers/net/phy/meson-gxl.c
+++ b/drivers/net/phy/meson-gxl.c
@@ -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;
}