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| author | Simon Glass <sjg@chromium.org> | 2019-09-25 08:55:55 -0600 |
|---|---|---|
| committer | Bin Meng <bmeng.cn@gmail.com> | 2019-10-08 13:57:38 +0800 |
| commit | 4805a7af8ebd4c604e1e32355927ec5035685121 (patch) | |
| tree | fa15885bb421070d45c336c3a2e02a9744de4dfe | |
| parent | ea14778d0680f8a3f262a06ceb52ea17deb6a104 (diff) | |
| download | u-boot-4805a7af8ebd4c604e1e32355927ec5035685121.tar.gz | |
dm: core: Correct the return value for uclass_find_first_device()
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>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
| -rw-r--r-- | drivers/core/uclass.c | 2 | ||||
| -rw-r--r-- | include/dm/uclass-internal.h | 4 | ||||
| -rw-r--r-- | 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 af575bbeb7..f217876cd2 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 6977995246..6e3f15c2b0 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 edd55b05d6..f74c430843 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; |