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efi/dev-path-parser: Switch to use for_each_acpi_dev_match() 

Switch to use for_each_acpi_dev_match() instead of home grown analogue.
No functional change intended.

Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
This commit is contained in:
Andy Shevchenko 2021-04-04 21:12:16 +03:00 committed by Ard Biesheuvel
parent 55fc610c8c
commit edbd1bc495
1 changed files with 17 additions and 30 deletions
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47
drivers/firmware/efi/dev-path-parser.c
View File

@ -12,52 +12,39 @@
#include <linux/efi.h>
#include <linux/pci.h>
struct acpi_hid_uid {
struct acpi_device_id hid[2];
char uid[11]; /* UINT_MAX + null byte */
};
static int __init match_acpi_dev(struct device *dev, const void *data)
{
struct acpi_hid_uid hid_uid = *(const struct acpi_hid_uid *)data;
struct acpi_device *adev = to_acpi_device(dev);
if (acpi_match_device_ids(adev, hid_uid.hid))
return 0;
if (adev->pnp.unique_id)
return !strcmp(adev->pnp.unique_id, hid_uid.uid);
else
return !strcmp("0", hid_uid.uid);
}
static long __init parse_acpi_path(const struct efi_dev_path *node,
struct device *parent, struct device **child)
{
struct acpi_hid_uid hid_uid = {};
char hid[ACPI_ID_LEN], uid[11]; /* UINT_MAX + null byte */
struct acpi_device *adev;
struct device *phys_dev;
if (node->header.length != 12)
return -EINVAL;
sprintf(hid_uid.hid[0].id, "%c%c%c%04X",
sprintf(hid, "%c%c%c%04X",
'A' + ((node->acpi.hid >> 10) & 0x1f) - 1,
'A' + ((node->acpi.hid >> 5) & 0x1f) - 1,
'A' + ((node->acpi.hid >> 0) & 0x1f) - 1,
node->acpi.hid >> 16);
sprintf(hid_uid.uid, "%u", node->acpi.uid);
sprintf(uid, "%u", node->acpi.uid);
*child = bus_find_device(&acpi_bus_type, NULL, &hid_uid,
match_acpi_dev);
if (!*child)
for_each_acpi_dev_match(adev, hid, NULL, -1) {
if (adev->pnp.unique_id && !strcmp(adev->pnp.unique_id, uid))
break;
if (!adev->pnp.unique_id && node->acpi.uid == 0)
break;
acpi_dev_put(adev);
}
if (!adev)
return -ENODEV;
phys_dev = acpi_get_first_physical_node(to_acpi_device(*child));
phys_dev = acpi_get_first_physical_node(adev);
if (phys_dev) {
get_device(phys_dev);
put_device(*child);
*child = phys_dev;
}
*child = get_device(phys_dev);
acpi_dev_put(adev);
} else
*child = &adev->dev;
return 0;
}