Per PCI Firmware Specification Revision 3.3 Table 4-7 _DSM Definitions
for PCI. Preserve PCI Boot Configuration Initial Revision ID is 2. But
the code is 1.
v2:add Fixes tag.
Fixes: 9d7d5db8e78e ("PCI: Move PRESERVE_BOOT_CONFIG _DSM evaluation to pci_register_host_bridge()")
Origin fixes: a78cf9657ba5 ("PCI/ACPI: Evaluate PCI Boot Configuration _DSM")
Signed-off-by: Zhou Shengqing <zhoushengqing@xxxxxxxxxxx>
---
drivers/pci/pci-acpi.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c
index af370628e583..7a4cad0c1f00 100644
--- a/drivers/pci/pci-acpi.c
+++ b/drivers/pci/pci-acpi.c
@@ -132,7 +132,7 @@ bool pci_acpi_preserve_config(struct pci_host_bridge *host_bridge)
*/
obj = acpi_evaluate_dsm_typed(ACPI_HANDLE(&host_bridge->dev),
&pci_acpi_dsm_guid,
- 1, DSM_PCI_PRESERVE_BOOT_CONFIG,
+ 2, DSM_PCI_PRESERVE_BOOT_CONFIG,
NULL, ACPI_TYPE_INTEGER);
if (obj && obj->integer.value == 0)
return true;
--
2.39.2
