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authorManu Gautam <mgautam@codeaurora.org>2018-03-20 09:01:47 +0300
committerKishon Vijay Abraham I <kishon@ti.com>2018-04-25 08:22:59 +0300
commit8866df25e56cd5ac067e70825e6f38f9f2363db9 (patch)
tree3d5d93497a111508df9698a1f5b9dd9507cc8911 /drivers/phy
parentaf09a5e926d67911ba2def00037ab8f7e19251a4 (diff)
downloadlinux-8866df25e56cd5ac067e70825e6f38f9f2363db9.tar.xz
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 <mgautam@codeaurora.org> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Diffstat (limited to 'drivers/phy')
-rw-r--r--drivers/phy/phy-core.c18
1 files changed, 18 insertions, 0 deletions
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;