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authorArnd Bergmann <arnd@arndb.de>2016-03-02 18:58:56 +0300
committerSebastian Reichel <sre@kernel.org>2016-03-03 17:12:08 +0300
commit0df6e32b0e36710fe989095241833e09dac3e41d (patch)
treedc560d925ad1d48ed283886b3c6c748d9cb5dd03 /drivers/power
parent298cb0f19267d8f4bbd7ce74732fb24d92befbea (diff)
downloadlinux-0df6e32b0e36710fe989095241833e09dac3e41d.tar.xz
power: pm2301-charger: use __maybe_unused to hide pm functions
The pm2301 charger driver uses nested #ifdefs to check for both CONFIG_PM and CONFIG_PM_SLEEP in an attempt to hide its suspend and runtime-pm operations when they are unused, but it does not hide the clear_lpn_pin() function in the same way, so we get a build warning when everything is disabled: drivers/power/pm2301_charger.c:123:13: error: 'clear_lpn_pin' defined but not used [-Werror=unused-function] This removes all the #ifdef and instead uses __maybe_unused annotations to let the compiler know it can silently drop the function definition. For the PM2XXX_PM_OPS, we can use an IS_ENABLED() check to avoid defining the structure when CONFIG_PM is not set without the #ifdef. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Sebastian Reichel <sre@kernel.org>
Diffstat (limited to 'drivers/power')
-rw-r--r--drivers/power/pm2301_charger.c22
1 files changed, 6 insertions, 16 deletions
diff --git a/drivers/power/pm2301_charger.c b/drivers/power/pm2301_charger.c
index 8f9bd1d0eeb6..fb62ed3fc38c 100644
--- a/drivers/power/pm2301_charger.c
+++ b/drivers/power/pm2301_charger.c
@@ -911,11 +911,7 @@ static struct pm2xxx_irq pm2xxx_charger_irq[] = {
{"PM2XXX_IRQ_INT", pm2xxx_irq_int},
};
-#ifdef CONFIG_PM
-
-#ifdef CONFIG_PM_SLEEP
-
-static int pm2xxx_wall_charger_resume(struct device *dev)
+static int __maybe_unused pm2xxx_wall_charger_resume(struct device *dev)
{
struct i2c_client *i2c_client = to_i2c_client(dev);
struct pm2xxx_charger *pm2;
@@ -931,7 +927,7 @@ static int pm2xxx_wall_charger_resume(struct device *dev)
return 0;
}
-static int pm2xxx_wall_charger_suspend(struct device *dev)
+static int __maybe_unused pm2xxx_wall_charger_suspend(struct device *dev)
{
struct i2c_client *i2c_client = to_i2c_client(dev);
struct pm2xxx_charger *pm2;
@@ -949,9 +945,7 @@ static int pm2xxx_wall_charger_suspend(struct device *dev)
return 0;
}
-#endif
-
-static int pm2xxx_runtime_suspend(struct device *dev)
+static int __maybe_unused pm2xxx_runtime_suspend(struct device *dev)
{
struct i2c_client *pm2xxx_i2c_client = to_i2c_client(dev);
struct pm2xxx_charger *pm2;
@@ -962,7 +956,7 @@ static int pm2xxx_runtime_suspend(struct device *dev)
return 0;
}
-static int pm2xxx_runtime_resume(struct device *dev)
+static int __maybe_unused pm2xxx_runtime_resume(struct device *dev)
{
struct i2c_client *pm2xxx_i2c_client = to_i2c_client(dev);
struct pm2xxx_charger *pm2;
@@ -975,15 +969,11 @@ static int pm2xxx_runtime_resume(struct device *dev)
return 0;
}
-static const struct dev_pm_ops pm2xxx_pm_ops = {
+static const struct dev_pm_ops pm2xxx_pm_ops __maybe_unused = {
SET_SYSTEM_SLEEP_PM_OPS(pm2xxx_wall_charger_suspend,
pm2xxx_wall_charger_resume)
SET_RUNTIME_PM_OPS(pm2xxx_runtime_suspend, pm2xxx_runtime_resume, NULL)
};
-#define PM2XXX_PM_OPS (&pm2xxx_pm_ops)
-#else
-#define PM2XXX_PM_OPS NULL
-#endif
static int pm2xxx_wall_charger_probe(struct i2c_client *i2c_client,
const struct i2c_device_id *id)
@@ -1244,7 +1234,7 @@ static struct i2c_driver pm2xxx_charger_driver = {
.remove = pm2xxx_wall_charger_remove,
.driver = {
.name = "pm2xxx-wall_charger",
- .pm = PM2XXX_PM_OPS,
+ .pm = IS_ENABLED(CONFIG_PM) ? &pm2xxx_pm_ops : NULL,
},
.id_table = pm2xxx_id,
};