i2c: i2c-bfin-twi: add CONFIG_PM_SLEEP to suspend/resume functions

Add CONFIG_PM_SLEEP to suspend/resume functions to fix the following
build warning when CONFIG_PM_SLEEP is not selected. This is because
sleep PM callbacks defined by SIMPLE_DEV_PM_OPS are only used when
the CONFIG_PM_SLEEP is enabled.

drivers/i2c/busses/i2c-bfin-twi.c:585:12: warning: 'i2c_bfin_twi_suspend' defined but not used [-Wunused-function]
drivers/i2c/busses/i2c-bfin-twi.c:600:12: warning: 'i2c_bfin_twi_resume' defined but not used [-Wunused-function]

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

diff --git a/drivers/i2c/busses/i2c-bfin-twi.c b/drivers/i2c/busses/i2c-bfin-twi.c
index 13ea1c2..37d4239 100644 (file)
--- a/drivers/i2c/busses/i2c-bfin-twi.c
+++ b/drivers/i2c/busses/i2c-bfin-twi.c
@@ -582,6 +582,7 @@ static struct i2c_algorithm bfin_twi_algorithm = {
        .functionality = bfin_twi_functionality,
 };
 
+#ifdef CONFIG_PM_SLEEP
 static int i2c_bfin_twi_suspend(struct device *dev)
 {
        struct bfin_twi_iface *iface = dev_get_drvdata(dev);
@@ -619,6 +620,10 @@ static int i2c_bfin_twi_resume(struct device *dev)
 
 static SIMPLE_DEV_PM_OPS(i2c_bfin_twi_pm,
                         i2c_bfin_twi_suspend, i2c_bfin_twi_resume);
+#define I2C_BFIN_TWI_PM_OPS    (&i2c_bfin_twi_pm)
+#else
+#define I2C_BFIN_TWI_PM_OPS    NULL
+#endif
 
 static int i2c_bfin_twi_probe(struct platform_device *pdev)
 {
@@ -746,7 +751,7 @@ static struct platform_driver i2c_bfin_twi_driver = {
        .driver         = {
                .name   = "i2c-bfin-twi",
                .owner  = THIS_MODULE,
-               .pm     = &i2c_bfin_twi_pm,
+               .pm     = I2C_BFIN_TWI_PM_OPS,
        },
 };