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SubjectRe: [PATCH v2 1/7] regulator: Support ROHM BD71847 power management IC
Hi Matti,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on regulator/for-next]
[also build test WARNING on next-20180913]
[cannot apply to v4.19-rc3]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url: https://github.com/0day-ci/linux/commits/Matti-Vaittinen/regulator-mfd-dt_bindings-bd718x7-Support-ROHM-bd71847/20180914-000129
base: https://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator.git for-next
config: x86_64-randconfig-x010-201836 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
# save the attached .config to linux build tree
make ARCH=x86_64

All warnings (new ones prefixed by >>):

drivers/mfd/rohm-bd718x7.c: In function 'bd71837_i2c_probe':
>> drivers/mfd/rohm-bd718x7.c:100:23: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
bd71837->chip_type = (unsigned int)of_device_get_match_data(&i2c->dev);
^
Cyclomatic Complexity 1 include/linux/err.h:PTR_ERR
Cyclomatic Complexity 1 include/linux/device.h:dev_set_drvdata
Cyclomatic Complexity 1 drivers/mfd/rohm-bd718x7.c:bd71837_i2c_init
Cyclomatic Complexity 1 include/linux/device.h:devm_kzalloc
Cyclomatic Complexity 1 include/linux/err.h:IS_ERR
Cyclomatic Complexity 9 drivers/mfd/rohm-bd718x7.c:bd71837_i2c_probe
Cyclomatic Complexity 1 drivers/mfd/rohm-bd718x7.c:bd71837_i2c_exit

vim +100 drivers/mfd/rohm-bd718x7.c

82
83 static int bd71837_i2c_probe(struct i2c_client *i2c,
84 const struct i2c_device_id *id)
85 {
86 struct bd71837 *bd71837;
87 int ret;
88
89 if (!i2c->irq) {
90 dev_err(&i2c->dev, "No IRQ configured\n");
91 return -EINVAL;
92 }
93
94 bd71837 = devm_kzalloc(&i2c->dev, sizeof(struct bd71837), GFP_KERNEL);
95
96 if (!bd71837)
97 return -ENOMEM;
98
99 bd71837->chip_irq = i2c->irq;
> 100 bd71837->chip_type = (unsigned int)of_device_get_match_data(&i2c->dev);
101 bd71837->dev = &i2c->dev;
102 dev_set_drvdata(&i2c->dev, bd71837);
103
104 bd71837->regmap = devm_regmap_init_i2c(i2c, &bd71837_regmap_config);
105 if (IS_ERR(bd71837->regmap)) {
106 dev_err(&i2c->dev, "regmap initialization failed\n");
107 return PTR_ERR(bd71837->regmap);
108 }
109
110 ret = devm_regmap_add_irq_chip(&i2c->dev, bd71837->regmap,
111 bd71837->chip_irq, IRQF_ONESHOT, 0,
112 &bd71837_irq_chip, &bd71837->irq_data);
113 if (ret) {
114 dev_err(&i2c->dev, "Failed to add irq_chip\n");
115 return ret;
116 }
117
118 /* Configure short press to 10 milliseconds */
119 ret = regmap_update_bits(bd71837->regmap,
120 BD718XX_REG_PWRONCONFIG0,
121 BD718XX_PWRBTN_PRESS_DURATION_MASK,
122 BD718XX_PWRBTN_SHORT_PRESS_10MS);
123 if (ret) {
124 dev_err(&i2c->dev,
125 "Failed to configure button short press timeout\n");
126 return ret;
127 }
128
129 /* Configure long press to 10 seconds */
130 ret = regmap_update_bits(bd71837->regmap,
131 BD718XX_REG_PWRONCONFIG1,
132 BD718XX_PWRBTN_PRESS_DURATION_MASK,
133 BD718XX_PWRBTN_LONG_PRESS_10S);
134
135 if (ret) {
136 dev_err(&i2c->dev,
137 "Failed to configure button long press timeout\n");
138 return ret;
139 }
140
141 ret = regmap_irq_get_virq(bd71837->irq_data, BD71837_INT_PWRBTN_S);
142
143 if (ret < 0) {
144 dev_err(&i2c->dev, "Failed to get the IRQ\n");
145 return ret;
146 }
147
148 button.irq = ret;
149
150 ret = devm_mfd_add_devices(bd71837->dev, PLATFORM_DEVID_AUTO,
151 bd71837_mfd_cells,
152 ARRAY_SIZE(bd71837_mfd_cells), NULL, 0,
153 regmap_irq_get_domain(bd71837->irq_data));
154 if (ret)
155 dev_err(&i2c->dev, "Failed to create subdevices\n");
156
157 return ret;
158 }
159

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