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author | Andy Shevchenko <andy.shevchenko@gmail.com> | 2021-04-04 21:12:16 +0300 |
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committer | Ard Biesheuvel <ardb@kernel.org> | 2021-05-22 14:07:00 +0200 |
commit | edbd1bc4951eff8da65732dbe0d381e555054428 (patch) | |
tree | b58ac8a626a41aab32f03f929f1d1b42cd83d97f /drivers/firmware/efi | |
parent | 55fc610c8cdae353737dbc2d59febd3c1a697095 (diff) | |
download | linux-edbd1bc4951eff8da65732dbe0d381e555054428.tar.bz2 |
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>
Diffstat (limited to 'drivers/firmware/efi')
-rw-r--r-- | drivers/firmware/efi/dev-path-parser.c | 49 |
1 files changed, 18 insertions, 31 deletions
diff --git a/drivers/firmware/efi/dev-path-parser.c b/drivers/firmware/efi/dev-path-parser.c index 5c9625e552f4..10d4457417a4 100644 --- a/drivers/firmware/efi/dev-path-parser.c +++ b/drivers/firmware/efi/dev-path-parser.c @@ -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); - - *child = bus_find_device(&acpi_bus_type, NULL, &hid_uid, - match_acpi_dev); - if (!*child) + sprintf(uid, "%u", node->acpi.uid); + + 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; } |