twl4030-charger: Fix compiler warning with regulator_enable()
The return value of regulator_enable need to be checked. This patch fixes
the following warning:
drivers/power/twl4030_charger.c: In function ‘twl4030_charger_enable_usb’:
drivers/power/twl4030_charger.c:192:20: warning: ignoring return value of ‘regulator_enable’, declared with attribute warn_unused_result [-Wunused-result]
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Anton Vorontsov <anton@enomsg.org>
diff --git a/drivers/power/twl4030_charger.c b/drivers/power/twl4030_charger.c
index be98e70..d98abe9 100644
--- a/drivers/power/twl4030_charger.c
+++ b/drivers/power/twl4030_charger.c
@@ -189,7 +189,12 @@
/* Need to keep regulator on */
if (!bci->usb_enabled) {
- regulator_enable(bci->usb_reg);
+ ret = regulator_enable(bci->usb_reg);
+ if (ret) {
+ dev_err(bci->dev,
+ "Failed to enable regulator\n");
+ return ret;
+ }
bci->usb_enabled = 1;
}