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phy: twl4030: use __maybe_unused to hide pm functions

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The twl4030 USB PHY driver uses UNIVERSAL_DEV_PM_OPS to access
its suspend/resume functions, which causes a warning about
unused symbols when CONFIG_PM is disabled:

drivers/phy/phy-twl4030-usb.c:394:12: error: 'twl4030_usb_runtime_suspend' defined but not used [-Werror=unused-function]
drivers/phy/phy-twl4030-usb.c:408:12: error: 'twl4030_usb_runtime_resume' defined but not used [-Werror=unused-function]

This adds __maybe_unused annotations to let the compiler know
it can silently drop the function definition.

Signed-off-by: Arnd Bergmann <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Arnd Bergmann 2016-03-02 16:24:08 +01:00 • committed by Greg Kroah-Hartman
commit 8073fb8283
1 changed files with 2 additions and 2 deletions
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4
drivers/phy/phy-twl4030-usb.c
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@ -391,7 +391,7 @@ static void __twl4030_phy_power(struct twl4030_usb *twl, int on)
WARN_ON(twl4030_usb_write_verify(twl, PHY_PWR_CTRL, pwr) < 0);
}
static int twl4030_usb_runtime_suspend(struct device *dev)
static int __maybe_unused twl4030_usb_runtime_suspend(struct device *dev)
{
struct twl4030_usb *twl = dev_get_drvdata(dev);
@ -405,7 +405,7 @@ static int twl4030_usb_runtime_suspend(struct device *dev)
return 0;
}
static int twl4030_usb_runtime_resume(struct device *dev)
static int __maybe_unused twl4030_usb_runtime_resume(struct device *dev)
{
struct twl4030_usb *twl = dev_get_drvdata(dev);
int res;