generic_phy_get_by_name() does not initialize phy->dev to NULL before returning when dev_read_stringlist_search() fails. This can lead to an uninitialized or reused struct phy erroneously be report as valid by generic_phy_valid().
Fix this issue by initializing phy->dev to NULL, also extend the dm_test_phy_base test with calls to generic_phy_valid().
Fixes: b9688df3cbf4 ("drivers: phy: Set phy->dev to NULL when generic_phy_get_by_index() fails") Fixes: 868d58f69c7c ("usb: dwc3: Fix non-usb3 configurations") Signed-off-by: Jonas Karlman jonas@kwiboo.se --- drivers/phy/phy-uclass.c | 3 +++ test/dm/phy.c | 6 ++++++ 2 files changed, 9 insertions(+)
diff --git a/drivers/phy/phy-uclass.c b/drivers/phy/phy-uclass.c index 629ef3aa3de5..0baf314a3471 100644 --- a/drivers/phy/phy-uclass.c +++ b/drivers/phy/phy-uclass.c @@ -211,6 +211,9 @@ int generic_phy_get_by_name(struct udevice *dev, const char *phy_name,
debug("%s(dev=%p, name=%s, phy=%p)\n", __func__, dev, phy_name, phy);
+ assert(phy); + phy->dev = NULL; + index = dev_read_stringlist_search(dev, "phy-names", phy_name); if (index < 0) { debug("dev_read_stringlist_search() failed: %d\n", index); diff --git a/test/dm/phy.c b/test/dm/phy.c index 4d4a083dd0fd..09329b9f71f6 100644 --- a/test/dm/phy.c +++ b/test/dm/phy.c @@ -29,7 +29,9 @@ static int dm_test_phy_base(struct unit_test_state *uts) * Get the same phy port in 2 different ways and compare. */ ut_assertok(generic_phy_get_by_name(parent, "phy1", &phy1_method1)); + ut_assert(generic_phy_valid(&phy1_method1)); ut_assertok(generic_phy_get_by_index(parent, 0, &phy1_method2)); + ut_assert(generic_phy_valid(&phy1_method2)); ut_asserteq(phy1_method1.id, phy1_method2.id);
/* @@ -50,6 +52,10 @@ static int dm_test_phy_base(struct unit_test_state *uts) ut_asserteq(-ENODEV, uclass_get_device(UCLASS_PHY, 4, &dev)); ut_asserteq(-ENODATA, generic_phy_get_by_name(parent, "phy_not_existing", &phy1_method1)); + ut_assert(!generic_phy_valid(&phy1_method1)); + ut_asserteq(-ENOENT, generic_phy_get_by_index(parent, 3, + &phy1_method2)); + ut_assert(!generic_phy_valid(&phy1_method2));
return 0; }