diff options
Diffstat (limited to 'drivers/power/sbs-battery.c')
| -rw-r--r-- | drivers/power/sbs-battery.c | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/drivers/power/sbs-battery.c b/drivers/power/sbs-battery.c index de1178659d4b..d6226d68b574 100644 --- a/drivers/power/sbs-battery.c +++ b/drivers/power/sbs-battery.c @@ -28,6 +28,7 @@ #include <linux/interrupt.h> #include <linux/gpio.h> #include <linux/of.h> +#include <linux/stat.h> #include <linux/power/sbs-battery.h> @@ -170,6 +171,7 @@ struct sbs_info { static char model_name[I2C_SMBUS_BLOCK_MAX + 1]; static char manufacturer[I2C_SMBUS_BLOCK_MAX + 1]; +static bool force_load; static int sbs_read_word_data(struct i2c_client *client, u8 address) { @@ -885,14 +887,17 @@ static int sbs_probe(struct i2c_client *client, skip_gpio: /* - * Before we register, we need to make sure we can actually talk + * Before we register, we might need to make sure we can actually talk * to the battery. */ - rc = sbs_read_word_data(client, sbs_data[REG_STATUS].addr); - if (rc < 0) { - dev_err(&client->dev, "%s: Failed to get device status\n", - __func__); - goto exit_psupply; + if (!force_load) { + rc = sbs_read_word_data(client, sbs_data[REG_STATUS].addr); + + if (rc < 0) { + dev_err(&client->dev, "%s: Failed to get device status\n", + __func__); + goto exit_psupply; + } } chip->power_supply = power_supply_register(&client->dev, sbs_desc, @@ -991,3 +996,7 @@ module_i2c_driver(sbs_battery_driver); MODULE_DESCRIPTION("SBS battery monitor driver"); MODULE_LICENSE("GPL"); + +module_param(force_load, bool, S_IRUSR | S_IRGRP | S_IROTH); +MODULE_PARM_DESC(force_load, + "Attempt to load the driver even if no battery is connected"); |