From 7fc90e8617095742ec0d948bfee10231c7a09be5 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Tue, 13 Sep 2022 19:31:47 +0300 Subject: efi/dev-path-parser: Refactor _UID handling to use acpi_dev_uid_to_integer() ACPI utils provide acpi_dev_uid_to_integer() helper to extract _UID as an integer. Use it instead of custom approach. Signed-off-by: Andy Shevchenko Reviewed-by: Hans de Goede Reviewed-by: Ard Biesheuvel Signed-off-by: Rafael J. Wysocki --- drivers/firmware/efi/dev-path-parser.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) (limited to 'drivers/firmware/efi/dev-path-parser.c') diff --git a/drivers/firmware/efi/dev-path-parser.c b/drivers/firmware/efi/dev-path-parser.c index eb9c65f97841..f80d87c199c3 100644 --- a/drivers/firmware/efi/dev-path-parser.c +++ b/drivers/firmware/efi/dev-path-parser.c @@ -15,9 +15,11 @@ static long __init parse_acpi_path(const struct efi_dev_path *node, struct device *parent, struct device **child) { - char hid[ACPI_ID_LEN], uid[11]; /* UINT_MAX + null byte */ struct acpi_device *adev; struct device *phys_dev; + char hid[ACPI_ID_LEN]; + u64 uid; + int ret; if (node->header.length != 12) return -EINVAL; @@ -27,12 +29,12 @@ static long __init parse_acpi_path(const struct efi_dev_path *node, 'A' + ((node->acpi.hid >> 5) & 0x1f) - 1, 'A' + ((node->acpi.hid >> 0) & 0x1f) - 1, node->acpi.hid >> 16); - 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)) + ret = acpi_dev_uid_to_integer(adev, &uid); + if (ret == 0 && node->acpi.uid == uid) break; - if (!adev->pnp.unique_id && node->acpi.uid == 0) + if (ret == -ENODATA && node->acpi.uid == 0) break; } if (!adev) -- cgit v1.2.3