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PCI/ACPI: Use acpi_evaluate_dsm_typed()

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The acpi_evaluate_dsm_typed() provides a way to check the type of the
object evaluated by _DSM call. Use it instead of open coded variant.

Link: https://lore.kernel.org/r/20231002135352.2603096-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: "Rafael J. Wysocki" <rafael@kernel.org>
This commit is contained in:
Andy Shevchenko 2023-10-02 16:53:52 +03:00 committed by Bjorn Helgaas
parent 83c088148c
commit 8624ebc300
1 changed files with 7 additions and 6 deletions
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13
drivers/pci/pci-acpi.c
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@ -1215,12 +1215,12 @@ void acpi_pci_add_bus(struct pci_bus *bus)
if (!pci_is_root_bus(bus))
return;
obj = acpi_evaluate_dsm(ACPI_HANDLE(bus->bridge), &pci_acpi_dsm_guid, 3,
DSM_PCI_POWER_ON_RESET_DELAY, NULL);
obj = acpi_evaluate_dsm_typed(ACPI_HANDLE(bus->bridge), &pci_acpi_dsm_guid, 3,
DSM_PCI_POWER_ON_RESET_DELAY, NULL, ACPI_TYPE_INTEGER);
if (!obj)
return;
if (obj->type == ACPI_TYPE_INTEGER && obj->integer.value == 1) {
if (obj->integer.value == 1) {
bridge = pci_find_host_bridge(bus);
bridge->ignore_reset_delay = 1;
}
@ -1376,12 +1376,13 @@ static void pci_acpi_optimize_delay(struct pci_dev *pdev,
if (bridge->ignore_reset_delay)
pdev->d3cold_delay = 0;
obj = acpi_evaluate_dsm(handle, &pci_acpi_dsm_guid, 3,
DSM_PCI_DEVICE_READINESS_DURATIONS, NULL);
obj = acpi_evaluate_dsm_typed(handle, &pci_acpi_dsm_guid, 3,
DSM_PCI_DEVICE_READINESS_DURATIONS, NULL,
ACPI_TYPE_PACKAGE);
if (!obj)
return;
if (obj->type == ACPI_TYPE_PACKAGE && obj->package.count == 5) {
if (obj->package.count == 5) {
elements = obj->package.elements;
if (elements[0].type == ACPI_TYPE_INTEGER) {
value = (int)elements[0].integer.value / 1000;