dm: core: Fix lists_bind_fdt() using non-existent of_match

The call to device_bind_with_driver_data() passes id->data but if
the entry has no of_match then the id has not been set by the selected
driver.

Normally this passes unnoticed since a previous driver likely had an
of_match value, so the id is set to that. Of course it is not correct
to pass the id->data from a different driver.

With clang-14 the driver ordering is such that the id is never actually
set in the 'bind /usb@1 usb_ether' line in test_bind_unbind_with_node()
thus causing a crash.

Fix this by passing 0 if the of_match for a driver does not exist.

Signed-off-by: Simon Glass <sjg@chromium.org>

diff --git a/drivers/core/lists.c b/drivers/core/lists.c
index c49695b..3878957 100644 (file)
--- a/drivers/core/lists.c
+++ b/drivers/core/lists.c
@@ -222,6 +222,7 @@ int lists_bind_fdt(struct udevice *parent, ofnode node, struct udevice **devp,
                log_debug("   - attempt to match compatible string '%s'\n",
                          compat);
 
+               id = NULL;
                for (entry = driver; entry != driver + n_ents; entry++) {
                        if (drv) {
                                if (drv != entry)
@@ -250,7 +251,8 @@ int lists_bind_fdt(struct udevice *parent, ofnode node, struct udevice **devp,
                                  entry->name, entry->of_match->compatible,
                                  id->compatible);
                ret = device_bind_with_driver_data(parent, entry, name,
-                                                  id->data, node, &dev);
+                                                  id ? id->data : 0, node,
+                                                  &dev);
                if (ret == -ENODEV) {
                        log_debug("Driver '%s' refuses to bind\n", entry->name);
                        continue;