[PATCH] setupapi: Always return device info from SetupDiGetDeviceInterfaceDetail() if requested.

[Zebediah Figura]

From: Michael Müller

Signed-off-by: Zebediah Figura 
---
 dlls/setupapi/devinst.c       | 14 ++++++++------
 dlls/setupapi/tests/devinst.c |  7 +++++++
 2 files changed, 15 insertions(+), 6 deletions(-)

diff --git a/dlls/setupapi/devinst.c b/dlls/setupapi/devinst.c
index c1e1251cdc..fbc8900229 100644
--- a/dlls/setupapi/devinst.c
+++ b/dlls/setupapi/devinst.c
@@ -2653,9 +2653,6 @@ BOOL WINAPI SetupDiGetDeviceInterfaceDetailA(HDEVINFO devinfo, SP_DEVICE_INTERFA
         else
             DeviceInterfaceDetailData->DevicePath[0] = '\0';

-        if (device_data && device_data->cbSize == sizeof(SP_DEVINFO_DATA))
-            copy_device_data(device_data, iface->device);
-
         ret = TRUE;
     }
     else
@@ -2664,6 +2661,10 @@ BOOL WINAPI SetupDiGetDeviceInterfaceDetailA(HDEVINFO devinfo, SP_DEVICE_INTERFA
             *RequiredSize = bytesNeeded;
         SetLastError(ERROR_INSUFFICIENT_BUFFER);
     }
+
+    if (device_data && device_data->cbSize == sizeof(SP_DEVINFO_DATA))
+        copy_device_data(device_data, iface->device);
+
     return ret;
 }

@@ -2708,9 +2709,6 @@ BOOL WINAPI SetupDiGetDeviceInterfaceDetailW(HDEVINFO devinfo, SP_DEVICE_INTERFA
         else
             DeviceInterfaceDetailData->DevicePath[0] = '\0';

-        if (device_data && device_data->cbSize == sizeof(SP_DEVINFO_DATA))
-            copy_device_data(device_data, iface->device);
-
         ret = TRUE;
     }
     else
@@ -2719,6 +2717,10 @@ BOOL WINAPI SetupDiGetDeviceInterfaceDetailW(HDEVINFO devinfo, SP_DEVICE_INTERFA
             *RequiredSize = bytesNeeded;
         SetLastError(ERROR_INSUFFICIENT_BUFFER);
     }
+
+    if (device_data && device_data->cbSize == sizeof(SP_DEVINFO_DATA))
+        copy_device_data(device_data, iface->device);
+
     return ret;
 }

diff --git a/dlls/setupapi/tests/devinst.c b/dlls/setupapi/tests/devinst.c
index b73af781d1..886957fe19 100644
--- a/dlls/setupapi/tests/devinst.c
+++ b/dlls/setupapi/tests/devinst.c
@@ -764,6 +764,13 @@ static void test_device_iface_detail(void)
     ok(GetLastError() == ERROR_INSUFFICIENT_BUFFER, "Got unexpected error %#x.\n", GetLastError());
     ok(size == expectedsize, "Got unexpected size %d.\n", size);

+    memset(&device, 0, sizeof(device));
+    device.cbSize = sizeof(device);
+    ret = SetupDiGetDeviceInterfaceDetailW(set, &iface, NULL, 0, &size, &device);
+    ok(!ret, "Expected failure.\n");
+    ok(GetLastError() == ERROR_INSUFFICIENT_BUFFER, "Got unexpected error %#x.\n", GetLastError());
+    ok(IsEqualGUID(&device.ClassGuid, &guid), "Got unexpected class %s.\n", wine_dbgstr_guid(&device.ClassGuid));
+
     heap_free(detail);
     SetupDiDestroyDeviceInfoList(set);
 }