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| author | Chanwoo Choi <cw00.choi@samsung.com> | 2012-08-21 15:16:23 +0900 |
|---|---|---|
| committer | Samuel Ortiz <sameo@linux.intel.com> | 2012-09-16 00:33:09 +0200 |
| commit | b186b12487efc80c44f2f0d26cc26eb249cf1524 (patch) | |
| tree | e6ff10b5e12ffbbfdc4abaf88e4ad0e2a25146ef /drivers/mfd/max77693.c | |
| parent | d51f42d2c5b7e11b47876b8b5c53f0ac317fef24 (diff) | |
| download | linux-stable-b186b12487efc80c44f2f0d26cc26eb249cf1524.tar.gz linux-stable-b186b12487efc80c44f2f0d26cc26eb249cf1524.tar.bz2 linux-stable-b186b12487efc80c44f2f0d26cc26eb249cf1524.zip | |
mfd: MAX77693: Fix NULL pointer error when initializing irqs
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 <cw00.choi@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Reported-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers/mfd/max77693.c')
| -rw-r--r-- | drivers/mfd/max77693.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/mfd/max77693.c b/drivers/mfd/max77693.c index 4fdd03d28539..cc5155e20494 100644 --- 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; |