Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-12-28 22:02:28 +00:00
Code Issues Packages Projects Releases Wiki Activity

phy: core: make NULL a valid phy reference if !CONFIG_GENERIC_PHY

Browse Source 
This fixes a regression on Keystone 2 platforms caused by patch
57303488cd
"usb: dwc3: adapt dwc3 core to use Generic PHY Framework" which adds
optional support of generic phy in DWC3 core.

On Keystone 2 platforms the USB is not working now because
CONFIG_GENERIC_PHY isn't set and, as result, Generic PHY APIs stubs
return -ENOSYS always. The log shows:
 dwc3 2690000.dwc3: failed to initialize core
 dwc3: probe of 2690000.dwc3 failed with error -38

Hence, fix it by making NULL a valid phy reference in Generic PHY
APIs stubs in the same way as it was done by the patch
04c2facad8 "drivers: phy: Make NULL
a valid phy reference".

Acked-by: Felipe Balbi <balbi@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Grygorii Strashko 2014-04-19 08:51:44 +05:30 committed by Greg Kroah-Hartman
parent 743bb387a1
commit 2b97789fa2
1 changed files with 16 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
include/linux/phy/phy.h
View File

@ -174,21 +174,29 @@ void devm_of_phy_provider_unregister(struct device *dev,
#else
static inline int phy_pm_runtime_get(struct phy *phy)
{
if (!phy)
return 0;
return -ENOSYS;
}
static inline int phy_pm_runtime_get_sync(struct phy *phy)
{
if (!phy)
return 0;
return -ENOSYS;
}
static inline int phy_pm_runtime_put(struct phy *phy)
{
if (!phy)
return 0;
return -ENOSYS;
}
static inline int phy_pm_runtime_put_sync(struct phy *phy)
{
if (!phy)
return 0;
return -ENOSYS;
}
@ -204,21 +212,29 @@ static inline void phy_pm_runtime_forbid(struct phy *phy)
static inline int phy_init(struct phy *phy)
{
if (!phy)
return 0;
return -ENOSYS;
}
static inline int phy_exit(struct phy *phy)
{
if (!phy)
return 0;
return -ENOSYS;
}
static inline int phy_power_on(struct phy *phy)
{
if (!phy)
return 0;
return -ENOSYS;
}
static inline int phy_power_off(struct phy *phy)
{
if (!phy)
return 0;
return -ENOSYS;
}