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ACPI / scan: Generalize of_compatible matching 

Redefine the function used for matching the device's "compatible"
property against a given list of "compatible" strings to take
a pointer to that list instead of a driver object pointer to
make it more general.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
This commit is contained in:
Rafael J. Wysocki 2015-04-10 16:07:30 +02:00
parent fd9caef4e2
commit 54fe9ce385
1 changed files with 14 additions and 6 deletions
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20
drivers/acpi/scan.c
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@ -949,9 +949,17 @@ int acpi_match_device_ids(struct acpi_device *device,
}
EXPORT_SYMBOL(acpi_match_device_ids);
/* Performs match against special "PRP0001" shoehorn ACPI ID */
static bool acpi_of_driver_match_device(struct device *dev,
const struct device_driver *drv)
/**
* acpi_of_match_device - Match device using the "compatible" property.
* @dev: Device to match.
* @of_match_table: List of device IDs to match against.
*
* If @dev has an ACPI companion which has the special PRP0001 device ID in its
* list of identifiers and a _DSD object with the "compatible" property, use
* that property to match against the given list of identifiers.
*/
static bool acpi_of_match_device(struct device *dev,
const struct of_device_id *of_match_table)
{
const union acpi_object *of_compatible, *obj;
struct acpi_device *adev;
@ -962,7 +970,7 @@ static bool acpi_of_driver_match_device(struct device *dev,
return false;
of_compatible = adev->data.of_compatible;
if (!drv->of_match_table || !of_compatible)
if (!of_match_table || !of_compatible)
return false;
if (of_compatible->type == ACPI_TYPE_PACKAGE) {
@ -976,7 +984,7 @@ static bool acpi_of_driver_match_device(struct device *dev,
for (i = 0; i < nval; i++, obj++) {
const struct of_device_id *id;
for (id = drv->of_match_table; id->compatible[0]; id++)
for (id = of_match_table; id->compatible[0]; id++)
if (!strcasecmp(obj->string.pointer, id->compatible))
return true;
}
@ -988,7 +996,7 @@ bool acpi_driver_match_device(struct device *dev,
const struct device_driver *drv)
{
if (!drv->acpi_match_table)
return acpi_of_driver_match_device(dev, drv);
return acpi_of_match_device(dev, drv->of_match_table);
return !!acpi_match_device(drv->acpi_match_table, dev);
}