Enhance ACPI reset drvier to use hotplug-safe iterators to walk PCI buses.

Signed-off-by: Jiang Liu <[email protected]>
Cc: Len Brown <[email protected]>
Cc: "Rafael J. Wysocki" <[email protected]>
Cc: [email protected]
Cc: [email protected]
---
 drivers/acpi/reboot.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/acpi/reboot.c b/drivers/acpi/reboot.c
index a6c77e8b..532dd6d 100644
--- a/drivers/acpi/reboot.c
+++ b/drivers/acpi/reboot.c
@@ -33,7 +33,7 @@ void acpi_reboot(void)
        switch (rr->space_id) {
        case ACPI_ADR_SPACE_PCI_CONFIG:
                /* The reset register can only live on bus 0. */
-               bus0 = pci_find_bus(0, 0);
+               bus0 = pci_get_bus(0, 0);
                if (!bus0)
                        return;
                /* Form PCI device/function pair. */
@@ -43,6 +43,7 @@ void acpi_reboot(void)
                /* Write the value that resets us. */
                pci_bus_write_config_byte(bus0, devfn,
                                (rr->address & 0xffff), reset_value);
+               pci_bus_put(bus0);
                break;
 
        case ACPI_ADR_SPACE_SYSTEM_MEMORY:
-- 
1.8.1.2

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