dm: pci: Fix device PCI iteration
When there is no PCI bus uclass_first_device will return no bus and no
error which will result in pci_find_first_device calling
skip_to_next_device with no bus, and the bus is only checked at the end
of the while cycle, not the beginning.
Fixes: 76c3fbcd3d ("dm: pci: Add a way to iterate through all PCI devices")
Signed-off-by: Michal Suchanek <msuchanek@suse.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/pci/pci-uclass.c b/drivers/pci/pci-uclass.c
index 058b2f6..5cff81a 100644
--- a/drivers/pci/pci-uclass.c
+++ b/drivers/pci/pci-uclass.c
@@ -1217,7 +1217,7 @@
* Scan through all the PCI controllers. On x86 there will only be one
* but that is not necessarily true on other hardware.
*/
- do {
+ while (bus) {
device_find_first_child(bus, &dev);
if (dev) {
*devp = dev;
@@ -1226,7 +1226,7 @@
ret = uclass_next_device(&bus);
if (ret)
return ret;
- } while (bus);
+ }
return 0;
}