This function returns -ENODEV when there is no device. This is inconsistent with other functions, such as uclass_find_next_device(), which returns 0.
Update it and tidy up the incorrect '-1' values in the comments.
Signed-off-by: Simon Glass sjg@chromium.org ---
drivers/core/uclass.c | 2 +- include/dm/uclass-internal.h | 4 ++-- test/dm/core.c | 3 +-- 3 files changed, 4 insertions(+), 5 deletions(-)
diff --git a/drivers/core/uclass.c b/drivers/core/uclass.c index af575bbeb72..f217876cd2c 100644 --- a/drivers/core/uclass.c +++ b/drivers/core/uclass.c @@ -225,7 +225,7 @@ int uclass_find_first_device(enum uclass_id id, struct udevice **devp) if (ret) return ret; if (list_empty(&uc->dev_head)) - return -ENODEV; + return 0;
*devp = list_first_entry(&uc->dev_head, struct udevice, uclass_node);
diff --git a/include/dm/uclass-internal.h b/include/dm/uclass-internal.h index 6977995246d..6e3f15c2b08 100644 --- a/include/dm/uclass-internal.h +++ b/include/dm/uclass-internal.h @@ -69,7 +69,7 @@ int uclass_find_device(enum uclass_id id, int index, struct udevice **devp); * The device is not prepared for use - this is an internal function. * The function uclass_get_device_tail() can be used to probe the device. * - * @return 0 if OK (found or not found), -1 on error + * @return 0 if OK (found or not found), -ve on error */ int uclass_find_first_device(enum uclass_id id, struct udevice **devp);
@@ -81,7 +81,7 @@ int uclass_find_first_device(enum uclass_id id, struct udevice **devp); * The device is not prepared for use - this is an internal function. * The function uclass_get_device_tail() can be used to probe the device. * - * @return 0 if OK (found or not found), -1 on error + * @return 0 if OK (found or not found), -ve on error */ int uclass_find_next_device(struct udevice **devp);
diff --git a/test/dm/core.c b/test/dm/core.c index edd55b05d6e..f74c4308439 100644 --- a/test/dm/core.c +++ b/test/dm/core.c @@ -749,8 +749,7 @@ static int dm_test_uclass_devices_find(struct unit_test_state *uts) ut_assert(dev); }
- ret = uclass_find_first_device(UCLASS_TEST_DUMMY, &dev); - ut_assert(ret == -ENODEV); + ut_assertok(uclass_find_first_device(UCLASS_TEST_DUMMY, &dev)); ut_assert(!dev);
return 0;