twl4030_charger: fix compile error when TWL4030_MADC not available.

We can only use the madc to check for 'ac' availability if the madc has
been compiled in.  If not: assume always using USB.

Reported-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: NeilBrown <neil@brown.name>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>

diff --git a/drivers/power/twl4030_charger.c b/drivers/power/twl4030_charger.c
index 2c537ee..f4f2c1f 100644 (file)
--- a/drivers/power/twl4030_charger.c
+++ b/drivers/power/twl4030_charger.c
@@ -91,6 +91,21 @@
 #define TWL4030_MSTATEC_COMPLETE1      0x0b
 #define TWL4030_MSTATEC_COMPLETE4      0x0e
 
+#if IS_ENABLED(CONFIG_TWL4030_MADC)
+/*
+ * If AC (Accessory Charger) voltage exceeds 4.5V (MADC 11)
+ * then AC is available.
+ */
+static inline int ac_available(void)
+{
+       return twl4030_get_madc_conversion(11) > 4500;
+}
+#else
+static inline int ac_available(void)
+{
+       return 0;
+}
+#endif
 static bool allow_usb;
 module_param(allow_usb, bool, 0644);
 MODULE_PARM_DESC(allow_usb, "Allow USB charge drawing default current");
@@ -263,7 +278,7 @@ static int twl4030_charger_update_current(struct twl4030_bci *bci)
         * If AC (Accessory Charger) voltage exceeds 4.5V (MADC 11)
         * and AC is enabled, set current for 'ac'
         */
-       if (twl4030_get_madc_conversion(11) > 4500) {
+       if (ac_available()) {
                cur = bci->ac_cur;
                bci->ac_is_active = true;
        } else {