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Subject[PATCH] phy: core: Allow phy_pm_runtime_xxx API calls with NULL phy
Date
phy_init() and phy_exit() calls, and phy_power_on() and
phy_power_off() already accept NULL as valid PHY refernece
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 <mgautam@codeaurora.org>
---
drivers/phy/phy-core.c | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)

diff --git a/drivers/phy/phy-core.c b/drivers/phy/phy-core.c
index 09ac8af..48b9615 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 @@ int phy_pm_runtime_get_sync(struct phy *phy)

int phy_pm_runtime_put(struct phy *phy)
{
+ if (!phy)
+ return 0;
+
if (!pm_runtime_enabled(&phy->dev))
return -ENOTSUPP;

@@ -190,6 +199,9 @@ int phy_pm_runtime_put(struct phy *phy)

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 @@ int phy_pm_runtime_put_sync(struct phy *phy)

void phy_pm_runtime_allow(struct phy *phy)
{
+ if (!phy)
+ return 0;
+
if (!pm_runtime_enabled(&phy->dev))
return;

@@ -208,6 +223,9 @@ void phy_pm_runtime_allow(struct phy *phy)

void phy_pm_runtime_forbid(struct phy *phy)
{
+ if (!phy)
+ return 0;
+
if (!pm_runtime_enabled(&phy->dev))
return;

--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
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