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net: phy: mxl-gpy: Remove interrupt mask clearing from config_init

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[ Upstream commit c44d3ffd85db03ebcc3090e55589e10d5af9f3a9 ]

When the system resumes from sleep, the phy_init_hw() function invokes
config_init(), which clears all interrupt masks and causes wake events to be
lost in subsequent wake sequences. Remove interrupt mask clearing from
config_init() and preserve relevant masks in config_intr().

Fixes: 7d901a1e878a ("net: phy: add Maxlinear GPY115/21x/24x driver")
Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com>
Signed-off-by: Raju Lakkaraju <Raju.Lakkaraju@microchip.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Raju Lakkaraju 2024-06-14 22:41:57 +05:30 committed by Greg Kroah-Hartman
parent 70993aca4f
commit 5bd1b7ab6a
1 changed files with 38 additions and 20 deletions
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58
drivers/net/phy/mxl-gpy.c
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@ -95,6 +95,7 @@ struct gpy_priv {
u8 fw_major;
u8 fw_minor;
u32 wolopts;
/* It takes 3 seconds to fully switch out of loopback mode before
* it can safely re-enter loopback mode. Record the time when
@ -209,6 +210,15 @@ static int gpy_hwmon_register(struct phy_device *phydev)
}
#endif
static int gpy_ack_interrupt(struct phy_device *phydev)
{
int ret;
/* Clear all pending interrupts */
ret = phy_read(phydev, PHY_ISTAT);
return ret < 0 ? ret : 0;
}
static int gpy_mbox_read(struct phy_device *phydev, u32 addr)
{
struct gpy_priv *priv = phydev->priv;
@ -250,16 +260,8 @@ out:
static int gpy_config_init(struct phy_device *phydev)
{
int ret;
/* Mask all interrupts */
ret = phy_write(phydev, PHY_IMASK, 0);
if (ret)
return ret;
/* Clear all pending interrupts */
ret = phy_read(phydev, PHY_ISTAT);
return ret < 0 ? ret : 0;
/* Nothing to configure. Configuration Requirement Placeholder */
return 0;
}
static bool gpy_has_broken_mdint(struct phy_device *phydev)
@ -540,11 +542,23 @@ static int gpy_read_status(struct phy_device *phydev)
static int gpy_config_intr(struct phy_device *phydev)
{
struct gpy_priv *priv = phydev->priv;
u16 mask = 0;
int ret;
ret = gpy_ack_interrupt(phydev);
if (ret)
return ret;
if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
mask = PHY_IMASK_MASK;
if (priv->wolopts & WAKE_MAGIC)
mask |= PHY_IMASK_WOL;
if (priv->wolopts & WAKE_PHY)
mask |= PHY_IMASK_LSTC;
return phy_write(phydev, PHY_IMASK, mask);
}
@ -593,6 +607,7 @@ static int gpy_set_wol(struct phy_device *phydev,
struct ethtool_wolinfo *wol)
{
struct net_device *attach_dev = phydev->attached_dev;
struct gpy_priv *priv = phydev->priv;
int ret;
if (wol->wolopts & WAKE_MAGIC) {
@ -640,6 +655,8 @@ static int gpy_set_wol(struct phy_device *phydev,
ret = phy_read(phydev, PHY_ISTAT);
if (ret < 0)
return ret;
priv->wolopts |= WAKE_MAGIC;
} else {
/* Disable magic packet matching */
ret = phy_clear_bits_mmd(phydev, MDIO_MMD_VEND2,
@ -647,6 +664,13 @@ static int gpy_set_wol(struct phy_device *phydev,
WOL_EN);
if (ret < 0)
return ret;
/* Disable the WOL interrupt */
ret = phy_clear_bits(phydev, PHY_IMASK, PHY_IMASK_WOL);
if (ret < 0)
return ret;
priv->wolopts &= ~WAKE_MAGIC;
}
if (wol->wolopts & WAKE_PHY) {
@ -663,9 +687,11 @@ static int gpy_set_wol(struct phy_device *phydev,
if (ret & (PHY_IMASK_MASK & ~PHY_IMASK_LSTC))
phy_trigger_machine(phydev);
priv->wolopts |= WAKE_PHY;
return 0;
}
priv->wolopts &= ~WAKE_PHY;
/* Disable the link state change interrupt */
return phy_clear_bits(phydev, PHY_IMASK, PHY_IMASK_LSTC);
}
@ -673,18 +699,10 @@ static int gpy_set_wol(struct phy_device *phydev,
static void gpy_get_wol(struct phy_device *phydev,
struct ethtool_wolinfo *wol)
{
int ret;
struct gpy_priv *priv = phydev->priv;
wol->supported = WAKE_MAGIC | WAKE_PHY;
wol->wolopts = 0;
ret = phy_read_mmd(phydev, MDIO_MMD_VEND2, VPSPEC2_WOL_CTL);
if (ret & WOL_EN)
wol->wolopts |= WAKE_MAGIC;
ret = phy_read(phydev, PHY_IMASK);
if (ret & PHY_IMASK_LSTC)
wol->wolopts |= WAKE_PHY;
wol->wolopts = priv->wolopts;
}
static int gpy_loopback(struct phy_device *phydev, bool enable)