pci: Avoid a crash in device_is_on_pci_bus()
This function cannot currently be called on the root node. Add a check
for this as well as a test.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/test/dm/pci.c b/test/dm/pci.c
index fb93e4c..39e82b3 100644
--- a/test/dm/pci.c
+++ b/test/dm/pci.c
@@ -339,3 +339,17 @@
}
DM_TEST(dm_test_pci_addr_live, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT |
DM_TESTF_LIVE_TREE);
+
+/* Test device_is_on_pci_bus() */
+static int dm_test_pci_on_bus(struct unit_test_state *uts)
+{
+ struct udevice *dev;
+
+ ut_assertok(dm_pci_bus_find_bdf(PCI_BDF(0, 0x1f, 0), &dev));
+ ut_asserteq(true, device_is_on_pci_bus(dev));
+ ut_asserteq(false, device_is_on_pci_bus(dev_get_parent(dev)));
+ ut_asserteq(true, device_is_on_pci_bus(dev));
+
+ return 0;
+}
+DM_TEST(dm_test_pci_on_bus, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);