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| author | Grygorii Strashko <grygorii.strashko@ti.com> | 2014-04-19 08:51:44 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-04-24 12:53:38 -0700 |
| commit | 2b97789fa289d531e767d994a77e34ec58f328c4 (patch) | |
| tree | 86fed1906885de4609b7b0c7cbbcf45c1cf1816d /include | |
| parent | 743bb387a1edbf1ebbba6cf77c1af3e488886c39 (diff) | |
| download | linux-2b97789fa289d531e767d994a77e34ec58f328c4.tar.bz2 | |
phy: core: make NULL a valid phy reference if !CONFIG_GENERIC_PHY
This fixes a regression on Keystone 2 platforms caused by patch
57303488cd37da58263e842de134dc65f7c626d5
"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
04c2facad8fee66c981a51852806d8923336f362 "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>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/phy/phy.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/include/linux/phy/phy.h b/include/linux/phy/phy.h index e2f5ca96cddc..2760744cb2a7 100644 --- a/include/linux/phy/phy.h +++ b/include/linux/phy/phy.h @@ -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; } |