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net: phy: meson-gxl: fix interrupt support

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[ Upstream commit daa5c4d016 ]

If an interrupt is already pending when the interrupt is enabled on the
GXL phy, no IRQ will ever be triggered.

The fix is simply to make sure pending IRQs are cleared before setting
up the irq mask.

Fixes: cf127ff20a ("net: phy: meson-gxl: add interrupt support")
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jerome Brunet
2019-03-14 14:49:45 +01:00
committed by Greg Kroah-Hartman
parent 85ef72d829
commit a6f0168e66
1 changed files with 6 additions and 0 deletions
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6
drivers/net/phy/meson-gxl.c
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@@ -211,6 +211,7 @@ static int meson_gxl_ack_interrupt(struct phy_device *phydev)
static int meson_gxl_config_intr(struct phy_device *phydev)
{
u16 val;
int ret;
if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
val = INTSRC_ANEG_PR
@@ -223,6 +224,11 @@ static int meson_gxl_config_intr(struct phy_device *phydev)
val = 0;
}
/* Ack any pending IRQ */
ret = meson_gxl_ack_interrupt(phydev);
if (ret)
return ret;
return phy_write(phydev, INTSRC_MASK, val);
}