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ACPI / property: Define a symbol for PRP0001 

Use a #defined symbol ACPI_DT_NAMESPACE_HID instead of the PRP0001
string.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Hanjun Guo <hanjun.guo@linaro.org>
This commit is contained in:
Rafael J. Wysocki 2015-05-22 04:24:34 +02:00
parent 5c53b262c8
commit ee89209402
3 changed files with 21 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/acpi/internal.h
View File

@ -191,6 +191,8 @@ bool acpi_osi_is_win8(void);
/*--------------------------------------------------------------------------
Device properties
-------------------------------------------------------------------------- */
#define ACPI_DT_NAMESPACE_HID "PRP0001"
void acpi_init_properties(struct acpi_device *adev);
void acpi_free_properties(struct acpi_device *adev);

8
drivers/acpi/property.c
View File

@ -110,11 +110,11 @@ void acpi_init_properties(struct acpi_device *adev)
int i;
/*
* Check if the special PRP0001 ACPI ID is present and in that case we
* fill in Device Tree compatible properties for this device.
* Check if ACPI_DT_NAMESPACE_HID is present and inthat case we fill in
* Device Tree compatible properties for this device.
*/
list_for_each_entry(hwid, &adev->pnp.ids, list) {
if (!strcmp(hwid->id, "PRP0001")) {
if (!strcmp(hwid->id, ACPI_DT_NAMESPACE_HID)) {
acpi_of = true;
break;
}
@ -170,7 +170,7 @@ void acpi_init_properties(struct acpi_device *adev)
out:
if (acpi_of && !adev->flags.of_compatible_ok)
acpi_handle_info(adev->handle,
"PRP0001 requires 'compatible' property\n");
ACPI_DT_NAMESPACE_HID " requires 'compatible' property\n");
}
void acpi_free_properties(struct acpi_device *adev)

28
drivers/acpi/scan.c
View File

@ -135,12 +135,13 @@ static int create_pnp_modalias(struct acpi_device *acpi_dev, char *modalias,
struct acpi_hardware_id *id;
/*
* Since we skip PRP0001 from the modalias below, 0 should be returned
* if PRP0001 is the only ACPI/PNP ID in the device's list.
* Since we skip ACPI_DT_NAMESPACE_HID from the modalias below, 0 should
* be returned if ACPI_DT_NAMESPACE_HID is the only ACPI/PNP ID in the
* device's list.
*/
count = 0;
list_for_each_entry(id, &acpi_dev->pnp.ids, list)
if (strcmp(id->id, "PRP0001"))
if (strcmp(id->id, ACPI_DT_NAMESPACE_HID))
count++;
if (!count)
@ -153,7 +154,7 @@ static int create_pnp_modalias(struct acpi_device *acpi_dev, char *modalias,
size -= len;
list_for_each_entry(id, &acpi_dev->pnp.ids, list) {
if (!strcmp(id->id, "PRP0001"))
if (!strcmp(id->id, ACPI_DT_NAMESPACE_HID))
continue;
count = snprintf(&modalias[len], size, "%s:", id->id);
@ -177,7 +178,8 @@ static int create_pnp_modalias(struct acpi_device *acpi_dev, char *modalias,
* @size: Size of the buffer.
*
* Expose DT compatible modalias as of:NnameTCcompatible. This function should
* only be called for devices having PRP0001 in their list of ACPI/PNP IDs.
* only be called for devices having ACPI_DT_NAMESPACE_HID in their list of
* ACPI/PNP IDs.
*/
static int create_of_modalias(struct acpi_device *acpi_dev, char *modalias,
int size)
@ -980,9 +982,9 @@ static void acpi_device_remove_files(struct acpi_device *dev)
* @adev: ACPI device object 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.
* If @dev has an ACPI companion which has ACPI_DT_NAMESPACE_HID 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 acpi_device *adev,
const struct of_device_id *of_match_table)
@ -1038,14 +1040,14 @@ static const struct acpi_device_id *__acpi_match_device(
return id;
/*
* Next, check the special "PRP0001" ID and try to match the
* Next, check ACPI_DT_NAMESPACE_HID and try to match the
* "compatible" property if found.
*
* The id returned by the below is not valid, but the only
* caller passing non-NULL of_ids here is only interested in
* whether or not the return value is NULL.
*/
if (!strcmp("PRP0001", hwid->id)
if (!strcmp(ACPI_DT_NAMESPACE_HID, hwid->id)
&& acpi_of_match_device(device, of_ids))
return id;
}
@ -2405,7 +2407,7 @@ static void acpi_default_enumeration(struct acpi_device *device)
}
static const struct acpi_device_id generic_device_ids[] = {
{"PRP0001", },
{ACPI_DT_NAMESPACE_HID, },
{"", },
};
@ -2413,8 +2415,8 @@ static int acpi_generic_device_attach(struct acpi_device *adev,
const struct acpi_device_id *not_used)
{
/*
* Since PRP0001 is the only ID handled here, the test below can be
* unconditional.
* Since ACPI_DT_NAMESPACE_HID is the only ID handled here, the test
* below can be unconditional.
*/
if (adev->data.of_compatible)
acpi_default_enumeration(adev);