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

[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 <gre...@linuxfoundation.org>
Cc: de...@driverdev.osuosl.org
Acked-by: Srinidhi Kasagar <srinidhi.kasa...@stericsson.com>
Signed-off-by: Lee Jones <lee.jo...@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;
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