mfd: MAX77693: Fix NULL pointer error when initializing irqs

[karo-tx-linux.git] / drivers / mfd / max77693.c

diff --git a/drivers/mfd/max77693.c b/drivers/mfd/max77693.c
index 4fdd03d2853903b80db951bbaf6a7b6afc2f07ce..cc5155e20494726c2ae6954e64128f61973ebafd 100644 (file)
--- a/drivers/mfd/max77693.c
+++ b/drivers/mfd/max77693.c
@@ -152,6 +152,20 @@ static int max77693_i2c_probe(struct i2c_client *i2c,
        max77693->haptic = i2c_new_dummy(i2c->adapter, I2C_ADDR_HAPTIC);
        i2c_set_clientdata(max77693->haptic, max77693);
 
+       /*
+        * Initialize register map for MUIC device because use regmap-muic
+        * instance of MUIC device when irq of max77693 is initialized
+        * before call max77693-muic probe() function.
+        */
+       max77693->regmap_muic = devm_regmap_init_i2c(max77693->muic,
+                                        &max77693_regmap_config);
+       if (IS_ERR(max77693->regmap_muic)) {
+               ret = PTR_ERR(max77693->regmap_muic);
+               dev_err(max77693->dev,
+                       "failed to allocate register map: %d\n", ret);
+               goto err_regmap;
+       }
+
        ret = max77693_irq_init(max77693);
        if (ret < 0)
                goto err_irq;