diff options
Diffstat (limited to 'drivers/i2c/i2c-core.c')
| -rw-r--r-- | drivers/i2c/i2c-core.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c index 430c001..5923cfa 100644 --- a/drivers/i2c/i2c-core.c +++ b/drivers/i2c/i2c-core.c @@ -254,10 +254,12 @@ static int i2c_device_probe(struct device *dev) client->flags & I2C_CLIENT_WAKE); dev_dbg(dev, "probe\n"); + acpi_dev_pm_attach(&client->dev, true); status = driver->probe(client, i2c_match_id(driver->id_table, client)); - if (status) + if (status) { i2c_set_clientdata(client, NULL); - + acpi_dev_pm_detach(&client->dev, true); + } return status; } @@ -280,7 +282,7 @@ static int i2c_device_remove(struct device *dev) } if (status == 0) i2c_set_clientdata(client, NULL); - + acpi_dev_pm_detach(&client->dev, true); return status; } @@ -1109,8 +1111,10 @@ static acpi_status acpi_i2c_add_device(acpi_handle handle, u32 level, if (ret < 0 || !info.addr) return AE_OK; + adev->power.flags.ignore_parent = true; strlcpy(info.type, dev_name(&adev->dev), sizeof(info.type)); if (!i2c_new_device(adapter, &info)) { + adev->power.flags.ignore_parent = false; dev_err(&adapter->dev, "failed to add I2C device %s from ACPI\n", dev_name(&adev->dev)); @@ -1132,6 +1136,9 @@ static void acpi_i2c_register_devices(struct i2c_adapter *adap) acpi_handle handle; acpi_status status; + if (!adap->dev.parent) + return; + handle = ACPI_HANDLE(adap->dev.parent); if (!handle) return; |