Message ID | 20190125124049.15227-2-marcel@ziswiler.com |
---|---|
State | Superseded |
Delegated to: | Tom Rini |
Headers | show |
Series | While converting SATA on Apalis iMX6 to use driver model I noticed it | expand |
On Fri, 25 Jan 2019 at 05:40, Marcel Ziswiler <marcel@ziswiler.com> wrote: > > From: Marcel Ziswiler <marcel.ziswiler@toradex.com> > > While uclass_find_device() fails with -ENODEV in case of list_empty > strangely uclass_find_first_device() returns 0. > > Fix uclass_find_first_device() to also fail with -ENODEV instead. > > Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com> > > --- > > Changes in v2: > - Update dm_test_uclass_devices_find() to test this behaviour as > suggested by Simon. > > drivers/core/uclass.c | 2 +- > test/dm/core.c | 4 ++++ > 2 files changed, 5 insertions(+), 1 deletion(-) Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/core/uclass.c b/drivers/core/uclass.c index a622f07941..fc3157de39 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 0; + return -ENODEV; *devp = list_first_entry(&uc->dev_head, struct udevice, uclass_node); diff --git a/test/dm/core.c b/test/dm/core.c index 260f6494a2..edd55b05d6 100644 --- a/test/dm/core.c +++ b/test/dm/core.c @@ -749,6 +749,10 @@ 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_assert(!dev); + return 0; } DM_TEST(dm_test_uclass_devices_find, DM_TESTF_SCAN_PDATA);