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path: root/drivers/gpio/gpio-max732x.c
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Diffstat (limited to 'drivers/gpio/gpio-max732x.c')
-rw-r--r--drivers/gpio/gpio-max732x.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/gpio/gpio-max732x.c b/drivers/gpio/gpio-max732x.c
index 36cb290..7c36f2b 100644
--- a/drivers/gpio/gpio-max732x.c
+++ b/drivers/gpio/gpio-max732x.c
@@ -622,6 +622,13 @@ static int max732x_probe(struct i2c_client *client,
goto out_failed;
}
+ if (nr_port > 8 && !chip->client_dummy) {
+ dev_err(&client->dev,
+ "Failed to allocate second group I2C device\n");
+ ret = -ENODEV;
+ goto out_failed;
+ }
+
mutex_init(&chip->lock);
max732x_readb(chip, is_group_a(chip, 0), &chip->reg_out[0]);
@@ -647,6 +654,8 @@ static int max732x_probe(struct i2c_client *client,
return 0;
out_failed:
+ if (chip->client_dummy)
+ i2c_unregister_device(chip->client_dummy);
max732x_irq_teardown(chip);
return ret;
}
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