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phy: core: Fix phy_get() to not return error on link creation failure 

commit 987351e1ea ("phy: core: Add consumer device link support")
added device link support between PHY consumer and PHY provider.
However certain peripherals (DWC3 ULPI) have cyclic dependency
between the PHY provider and PHY consumer causing the device link
creation to fail.

Instead of erroring out on failure to create device link, only add a
debug print to indicate device link creation failed to get USB
working again in multiple platforms.

Fixes: 987351e1ea ("phy: core: Add consumer device link support")
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Reviewed-by: Alexandre TORGUE <alexandre.torgue@st.com>
This commit is contained in:
Kishon Vijay Abraham I 2020-02-18 17:44:18 +05:30
parent 46b7edf1c7
commit 1d7cb11e10
1 changed files with 6 additions and 12 deletions
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18
drivers/phy/phy-core.c
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@ -688,11 +688,9 @@ struct phy *phy_get(struct device *dev, const char *string)
get_device(&phy->dev);
link = device_link_add(dev, &phy->dev, DL_FLAG_STATELESS);
if (!link) {
dev_err(dev, "failed to create device link to %s\n",
if (!link)
dev_dbg(dev, "failed to create device link to %s\n",
dev_name(phy->dev.parent));
return ERR_PTR(-EINVAL);
}
return phy;
}
@ -803,11 +801,9 @@ struct phy *devm_of_phy_get(struct device *dev, struct device_node *np,
}
link = device_link_add(dev, &phy->dev, DL_FLAG_STATELESS);
if (!link) {
dev_err(dev, "failed to create device link to %s\n",
if (!link)
dev_dbg(dev, "failed to create device link to %s\n",
dev_name(phy->dev.parent));
return ERR_PTR(-EINVAL);
}
return phy;
}
@ -852,11 +848,9 @@ struct phy *devm_of_phy_get_by_index(struct device *dev, struct device_node *np,
devres_add(dev, ptr);
link = device_link_add(dev, &phy->dev, DL_FLAG_STATELESS);
if (!link) {
dev_err(dev, "failed to create device link to %s\n",
if (!link)
dev_dbg(dev, "failed to create device link to %s\n",
dev_name(phy->dev.parent));
return ERR_PTR(-EINVAL);
}
return phy;
}