From a52e3b37ebc9dff9e5750ce9ef68cf78be5a9d77 Mon Sep 17 00:00:00 2001 From: Charles Keepax Date: Thu, 27 Jun 2019 10:24:08 +0100 Subject: i2c: acpi: Factor out getting the IRQ from ACPI In preparation for future refactoring factor out the fetch of the IRQ into its own helper function. Whilst we are at it update the handling to return the actual error code returned from acpi_dev_get_resources as well. Reviewed-by: Andy Shevchenko Signed-off-by: Charles Keepax Reviewed-by: Mika Westerberg Signed-off-by: Wolfram Sang --- drivers/i2c/i2c-core-acpi.c | 29 +++++++++++++++++++++-------- 1 file changed, 21 insertions(+), 8 deletions(-) (limited to 'drivers/i2c') diff --git a/drivers/i2c/i2c-core-acpi.c b/drivers/i2c/i2c-core-acpi.c index d3474d1f5e09..e9c803dfba44 100644 --- a/drivers/i2c/i2c-core-acpi.c +++ b/drivers/i2c/i2c-core-acpi.c @@ -148,12 +148,29 @@ static int i2c_acpi_add_resource(struct acpi_resource *ares, void *data) return 1; /* No need to add resource to the list */ } +static int i2c_acpi_get_irq(struct acpi_device *adev) +{ + struct list_head resource_list; + int irq = -ENOENT; + int ret; + + INIT_LIST_HEAD(&resource_list); + + ret = acpi_dev_get_resources(adev, &resource_list, + i2c_acpi_add_resource, &irq); + if (ret < 0) + return ret; + + acpi_dev_free_resource_list(&resource_list); + + return irq; +} + static int i2c_acpi_get_info(struct acpi_device *adev, struct i2c_board_info *info, struct i2c_adapter *adapter, acpi_handle *adapter_handle) { - struct list_head resource_list; struct i2c_acpi_lookup lookup; int ret; @@ -185,13 +202,9 @@ static int i2c_acpi_get_info(struct acpi_device *adev, *adapter_handle = lookup.adapter_handle; /* Then fill IRQ number if any */ - INIT_LIST_HEAD(&resource_list); - ret = acpi_dev_get_resources(adev, &resource_list, - i2c_acpi_add_resource, &info->irq); - if (ret < 0) - return -EINVAL; - - acpi_dev_free_resource_list(&resource_list); + info->irq = i2c_acpi_get_irq(adev); + if (info->irq < 0) + return info->irq; acpi_set_modalias(adev, dev_name(&adev->dev), info->type, sizeof(info->type)); -- cgit v1.2.3-59-g8ed1b