PCI / ACPI: Use acpi_find_child_device() for child devices lookup

[~andy/linux] / drivers / acpi / glue.c

diff --git a/drivers/acpi/glue.c b/drivers/acpi/glue.c
index ea77512ad70c58e9d660628929cad52c76ab863f..9d200d5029ca5403c7813e9c220de5df90e664ee 100644 (file)
--- a/drivers/acpi/glue.c
+++ b/drivers/acpi/glue.c
@@ -106,6 +106,9 @@ struct acpi_device *acpi_find_child_device(struct acpi_device *parent,
        struct acpi_device *adev, *ret = NULL;
        int ret_score = 0;
 
+       if (!parent)
+               return NULL;
+
        list_for_each_entry(adev, &parent->children, node) {
                unsigned long long addr;
                acpi_status status;