[PATCH 4/4 v2] staging: ste_rmi4: Suppress 'ignoring return value of ‘regulator_enable()' warning

[lee.jones@linaro.org (Lee Jones)]

drivers/staging/ste_rmi4/synaptics_i2c_rmi4.c:
        In function ?synaptics_rmi4_resume?:
drivers/staging/ste_rmi4/synaptics_i2c_rmi4.c:1090:18:
        warning: ignoring return value of ?regulator_enable?, declared
        with attribute warn_unused_result [-Wunused-result

Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: devel at driverdev.osuosl.org
Acked-by: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

diff --git a/drivers/staging/ste_rmi4/synaptics_i2c_rmi4.c b/drivers/staging/ste_rmi4/synaptics_i2c_rmi4.c
index fe667dd..386362c 100644
--- a/drivers/staging/ste_rmi4/synaptics_i2c_rmi4.c
+++ b/drivers/staging/ste_rmi4/synaptics_i2c_rmi4.c
@@ -1087,7 +1087,11 @@ static int synaptics_rmi4_resume(struct device *dev)
 	unsigned char intr_status;
 	struct synaptics_rmi4_data *rmi4_data = dev_get_drvdata(dev);
 
-	regulator_enable(rmi4_data->regulator);
+	retval = regulator_enable(rmi4_data->regulator);
+	if (retval) {
+		dev_err(dev, "Regulator enable failed (%d)\n", retval);
+		return retval;
+	}
 
 	enable_irq(rmi4_data->i2c_client->irq);
 	rmi4_data->touch_stopped = false;