From 8866df25e56cd5ac067e70825e6f38f9f2363db9 Mon Sep 17 00:00:00 2001 From: Manu Gautam Date: Tue, 20 Mar 2018 11:31:47 +0530 Subject: phy: core: Allow phy_pm_runtime_xxx API calls with NULL phy phy_init() and phy_exit() calls, and phy_power_on() and phy_power_off() already accept NULL as valid PHY reference and act as NOP. Extend same concept to phy runtime_pm APIs to keep drivers (e.g. dwc3) code simple while dealing with optional PHYs. Signed-off-by: Manu Gautam Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/phy-core.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'drivers/phy') diff --git a/drivers/phy/phy-core.c b/drivers/phy/phy-core.c index 09ac8afb97ac..35fd38c5a4a1 100644 --- a/drivers/phy/phy-core.c +++ b/drivers/phy/phy-core.c @@ -153,6 +153,9 @@ int phy_pm_runtime_get(struct phy *phy) { int ret; + if (!phy) + return 0; + if (!pm_runtime_enabled(&phy->dev)) return -ENOTSUPP; @@ -168,6 +171,9 @@ int phy_pm_runtime_get_sync(struct phy *phy) { int ret; + if (!phy) + return 0; + if (!pm_runtime_enabled(&phy->dev)) return -ENOTSUPP; @@ -181,6 +187,9 @@ EXPORT_SYMBOL_GPL(phy_pm_runtime_get_sync); int phy_pm_runtime_put(struct phy *phy) { + if (!phy) + return 0; + if (!pm_runtime_enabled(&phy->dev)) return -ENOTSUPP; @@ -190,6 +199,9 @@ EXPORT_SYMBOL_GPL(phy_pm_runtime_put); int phy_pm_runtime_put_sync(struct phy *phy) { + if (!phy) + return 0; + if (!pm_runtime_enabled(&phy->dev)) return -ENOTSUPP; @@ -199,6 +211,9 @@ EXPORT_SYMBOL_GPL(phy_pm_runtime_put_sync); void phy_pm_runtime_allow(struct phy *phy) { + if (!phy) + return; + if (!pm_runtime_enabled(&phy->dev)) return; @@ -208,6 +223,9 @@ EXPORT_SYMBOL_GPL(phy_pm_runtime_allow); void phy_pm_runtime_forbid(struct phy *phy) { + if (!phy) + return; + if (!pm_runtime_enabled(&phy->dev)) return; -- cgit v1.2.1