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phy: Fix generic_setup_phy() return value on power on failure

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generic_phy_exit() typically return 0 for a struct phy that has been
initialized with a generic_phy_init() call.

generic_setup_phy() returns the value from a generic_phy_exit() call
when generic_phy_power_on() fails. This hides the failed state of the
power_on ops from the caller of generic_setup_phy().

Fix this by ignoring the return value of the generic_phy_exit() call and
return the value from the generic_phy_power_on() call.

Fixes: 84e561407a ("phy: Add generic_{setup,shutdown}_phy() helpers")
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
This commit is contained in:
Jonas Karlman 2023-08-31 23:07:08 +00:00 committed by Tom Rini
parent 3b4e6e9462
commit bd78f2c2c2
2 changed files with 25 additions and 1 deletions
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2
drivers/phy/phy-uclass.c
View File

@ -526,7 +526,7 @@ int generic_setup_phy(struct udevice *dev, struct phy *phy, int index)
ret = generic_phy_power_on(phy);
if (ret)
ret = generic_phy_exit(phy);
generic_phy_exit(phy);
}
return ret;

24
test/dm/phy.c
View File

@ -234,3 +234,27 @@ static int dm_test_phy_multi_exit(struct unit_test_state *uts)
return 0;
}
DM_TEST(dm_test_phy_multi_exit, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
static int dm_test_phy_setup(struct unit_test_state *uts)
{
struct phy phy;
struct udevice *parent;
ut_assertok(uclass_get_device_by_name(UCLASS_SIMPLE_BUS,
"gen_phy_user", &parent));
/* normal */
ut_assertok(generic_setup_phy(parent, &phy, 0));
ut_assertok(generic_shutdown_phy(&phy));
/* power_off fail with -EIO */
ut_assertok(generic_setup_phy(parent, &phy, 1));
ut_asserteq(-EIO, generic_shutdown_phy(&phy));
/* power_on fail with -EIO */
ut_asserteq(-EIO, generic_setup_phy(parent, &phy, 2));
ut_assertok(generic_shutdown_phy(&phy));
return 0;
}
DM_TEST(dm_test_phy_setup, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);