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mfd: MAX77693: Fix NULL pointer error when initializing irqs

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This patch initialize register map of MUIC device because mfd driver
of Maxim MAX77693 use regmap-muic instance of MUIC device when irqs of
Maxim MAX77693 is initialized before call max77693-muic probe() function.

Signed-off-by: Chanwoo Choi <[email protected]>
Signed-off-by: Myungjoo Ham <[email protected]>
Signed-off-by: Kyungmin Park <[email protected]>
Reported-by: Sylwester Nawrocki <[email protected]>
Acked-by: Greg Kroah-Hartman <[email protected]>
Signed-off-by: Samuel Ortiz <[email protected]>
This commit is contained in:
Chanwoo Choi 2012-08-21 15:16:23 +09:00 • committed by Samuel Ortiz
commit 887780b85a
2 changed files with 26 additions and 7 deletions
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14
drivers/mfd/max77693.c
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@ -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;