[PATCH 1/1] setupapi: Return built-in property keys for device interfaces even when the Properties subkey for the interface doesn't exist.

[Vibhav Pant]

From: Vibhav Pant

---
 dlls/setupapi/devinst.c       | 4 +++-
 dlls/setupapi/tests/devinst.c | 9 ++++++++-
 2 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/dlls/setupapi/devinst.c b/dlls/setupapi/devinst.c
index 7083688e5db..066bd6f09c2 100644
--- a/dlls/setupapi/devinst.c
+++ b/dlls/setupapi/devinst.c
@@ -3115,8 +3115,10 @@ static DWORD get_device_reg_properties( HKEY base_key, DEVPROPKEY *buf, DWORD bu
     LSTATUS ls;
     DWORD i, count = 0;

+    if (req_len)
+        *req_len = 0;
     if ((ls = RegOpenKeyExW( base_key, L"Properties", 0, KEY_ENUMERATE_SUB_KEYS, &properties )))
-        return ls;
+        return ls == ERROR_FILE_NOT_FOUND ? ERROR_SUCCESS : ls;

keys = malloc( sizeof( *keys ) * buf_len );
     if (!keys && buf_len)
diff --git a/dlls/setupapi/tests/devinst.c b/dlls/setupapi/tests/devinst.c
index 2f46e5beb95..ed9d197e3bd 100644
--- a/dlls/setupapi/tests/devinst.c
+++ b/dlls/setupapi/tests/devinst.c
@@ -2823,6 +2823,13 @@ static void test_device_interface_properties(void)
     err = GetLastError();
     ok(!ret && err == ERROR_NOT_FOUND, "%lu != %d\n", err, ERROR_NOT_FOUND);

+    /* Should return built-in property keys even when the "Properties" subkey for the interface hasn't been created */
+    req = 0;
+    ret = SetupDiGetDeviceInterfacePropertyKeys(set, &iface, NULL, 0, &req, 0);
+    err = GetLastError();
+    ok(!ret && err == ERROR_INSUFFICIENT_BUFFER, "%lu != %d\n", err, ERROR_INSUFFICIENT_BUFFER);
+    ok(req >= ARRAY_SIZE(default_keys), "got req %lu, should be >= %lu\n", req, (DWORD)ARRAY_SIZE(default_keys));
+
     ret = SetupDiSetDeviceInterfacePropertyW(set, &iface, &DEVPKEY_DeviceInterface_FriendlyName, DEVPROP_TYPE_STRING,
                                              (const BYTE *)str, sizeof(str), 0);
     err = GetLastError();
@@ -2910,7 +2917,7 @@ static void test_device_interface_properties(void)
     req = 0;
     ret = SetupDiGetDeviceInterfacePropertyKeys(set, &iface, NULL, 0, &req, 0);
     err = GetLastError();
-    ok(!ret && err == ERROR_INSUFFICIENT_BUFFER, "%lu != %d\n", err, ERROR_INVALID_FLAGS);
+    ok(!ret && err == ERROR_INSUFFICIENT_BUFFER, "%lu != %d\n", err, ERROR_INSUFFICIENT_BUFFER);

size = req;
     keys = calloc(size, sizeof(*keys));