diff options
Diffstat (limited to '')
| -rw-r--r-- | drivers/i2c/i2c-core-acpi.c | 29 |
1 files changed, 22 insertions, 7 deletions
diff --git a/drivers/i2c/i2c-core-acpi.c b/drivers/i2c/i2c-core-acpi.c index 92c1cc07ed46..85ed4c1d4924 100644 --- a/drivers/i2c/i2c-core-acpi.c +++ b/drivers/i2c/i2c-core-acpi.c @@ -144,9 +144,12 @@ static int i2c_acpi_do_lookup(struct acpi_device *adev, struct list_head resource_list; int ret; - if (acpi_bus_get_status(adev) || !adev->status.present) + if (acpi_bus_get_status(adev)) return -EINVAL; + if (!acpi_dev_ready_for_enumeration(adev)) + return -ENODEV; + if (acpi_match_device_ids(adev, i2c_acpi_ignored_device_ids) == 0) return -ENODEV; @@ -254,6 +257,13 @@ static void i2c_acpi_register_device(struct i2c_adapter *adapter, struct acpi_device *adev, struct i2c_board_info *info) { + /* + * Skip registration on boards where the ACPI tables are + * known to contain bogus I2C devices. + */ + if (acpi_quirk_skip_i2c_client_enumeration(adev)) + return; + adev->power.flags.ignore_parent = true; acpi_device_set_enumerated(adev); @@ -473,8 +483,8 @@ struct notifier_block i2c_acpi_notifier = { }; /** - * i2c_acpi_new_device - Create i2c-client for the Nth I2cSerialBus resource - * @dev: Device owning the ACPI resources to get the client from + * i2c_acpi_new_device_by_fwnode - Create i2c-client for the Nth I2cSerialBus resource + * @fwnode: fwnode with the ACPI resources to get the client from * @index: Index of ACPI resource to get * @info: describes the I2C device; note this is modified (addr gets set) * Context: can sleep @@ -490,15 +500,20 @@ struct notifier_block i2c_acpi_notifier = { * Returns a pointer to the new i2c-client, or error pointer in case of failure. * Specifically, -EPROBE_DEFER is returned if the adapter is not found. */ -struct i2c_client *i2c_acpi_new_device(struct device *dev, int index, - struct i2c_board_info *info) +struct i2c_client *i2c_acpi_new_device_by_fwnode(struct fwnode_handle *fwnode, + int index, + struct i2c_board_info *info) { - struct acpi_device *adev = ACPI_COMPANION(dev); struct i2c_acpi_lookup lookup; struct i2c_adapter *adapter; + struct acpi_device *adev; LIST_HEAD(resource_list); int ret; + adev = to_acpi_device_node(fwnode); + if (!adev) + return ERR_PTR(-ENODEV); + memset(&lookup, 0, sizeof(lookup)); lookup.info = info; lookup.device_handle = acpi_device_handle(adev); @@ -520,7 +535,7 @@ struct i2c_client *i2c_acpi_new_device(struct device *dev, int index, return i2c_new_client_device(adapter, info); } -EXPORT_SYMBOL_GPL(i2c_acpi_new_device); +EXPORT_SYMBOL_GPL(i2c_acpi_new_device_by_fwnode); bool i2c_acpi_waive_d0_probe(struct device *dev) { |