Patchwork [8/8] PCI, ACPI: reserve fw allocated resource for hot added root bus

login
register
mail settings
Submitter Yinghai Lu
Date Nov. 4, 2012, 4:39 a.m.
Message ID <1352003971-22278-9-git-send-email-yinghai@kernel.org>
Download mbox | patch
Permalink /patch/196973/
State Changes Requested
Headers show

Comments

Yinghai Lu - Nov. 4, 2012, 4:39 a.m.
FW could already allocate resource in pci bar registers, and we need to
reserve it before try to allocate another one.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
---
 drivers/acpi/pci_root.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

Patch

diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c
index 012f40d..bc09567 100644
--- a/drivers/acpi/pci_root.c
+++ b/drivers/acpi/pci_root.c
@@ -644,8 +644,10 @@  static int acpi_pci_root_start(struct acpi_device *device)
 	struct acpi_pci_root *root = acpi_driver_data(device);
 	struct acpi_pci_driver *driver;
 
-	if (system_state != SYSTEM_BOOTING)
+	if (system_state != SYSTEM_BOOTING) {
+		pcibios_resource_survey_bus(root->bus);
 		pci_assign_unassigned_bus_resources(root->bus);
+	}
 
 	mutex_lock(&acpi_pci_root_lock);
 	list_for_each_entry(driver, &acpi_pci_drivers, node)