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| author | Simon Glass <sjg@chromium.org> | 2024-10-19 09:21:49 -0600 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2024-11-02 11:13:59 -0600 |
| commit | cedf9ccaa27828876bc29b1dfc721cea2e5e6dfc (patch) | |
| tree | fcd57ae86314f216f73748dbf935d4ebf47cddb2 /test | |
| parent | b84c13f37d19a3605bb6e34d26c2396cc0fffd86 (diff) | |
dm: core: Add a function to see if a device exists
All the uclass functions for finding a device end up creating a uclass
if it doesn't exist. Add a function which instead returns NULL in this
case.
This is useful when in the 'unbind' path, since we don't want to undo
any unbinding which has already happened.
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'test')
| -rw-r--r-- | test/dm/core.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/test/dm/core.c b/test/dm/core.c index e0c5b9e0017..7371d3ff426 100644 --- a/test/dm/core.c +++ b/test/dm/core.c @@ -1351,3 +1351,25 @@ static int dm_test_dev_get_mem(struct unit_test_state *uts) return 0; } DM_TEST(dm_test_dev_get_mem, UTF_SCAN_FDT); + +/* Test uclass_try_first_device() */ +static int dm_test_try_first_device(struct unit_test_state *uts) +{ + struct udevice *dev; + + /* Check that it doesn't create a device or uclass */ + ut_assertnull(uclass_find(UCLASS_TEST)); + ut_assertnull(uclass_try_first_device(UCLASS_TEST)); + ut_assertnull(uclass_try_first_device(UCLASS_TEST)); + ut_assertnull(uclass_find(UCLASS_TEST)); + + /* Create a test device */ + ut_assertok(device_bind_by_name(uts->root, false, &driver_info_manual, + &dev)); + dev = uclass_try_first_device(UCLASS_TEST); + ut_assertnonnull(dev); + ut_asserteq(UCLASS_TEST, device_get_uclass_id(dev)); + + return 0; +} +DM_TEST(dm_test_try_first_device, 0); |