[PATCH v2 2/3] wineusb.sys: Implement DevClass compatible id for devices with multiple interfaces.

[Ivo Ivanov]

From: Ivo Ivanov

Fixes also single interface devices not showing class, subclass,
protocol of the first interface, which is the behavior on Windows.
---
 dlls/wineusb.sys/unixlib.c | 25 ++++++++++++++++++++++---
 dlls/wineusb.sys/unixlib.h |  2 +-
 dlls/wineusb.sys/wineusb.c | 20 +++++++++++++++-----
 3 files changed, 38 insertions(+), 9 deletions(-)

diff --git a/dlls/wineusb.sys/unixlib.c b/dlls/wineusb.sys/unixlib.c
index 7889270c37d..fb8ddea1bdf 100644
--- a/dlls/wineusb.sys/unixlib.c
+++ b/dlls/wineusb.sys/unixlib.c
@@ -143,10 +143,28 @@ static void add_usb_device(libusb_device *libusb_device)
     usb_event.u.added_device.subclass = device_desc.bDeviceSubClass;
     usb_event.u.added_device.protocol = device_desc.bDeviceProtocol;
     usb_event.u.added_device.interface = false;
-    queue_event(&usb_event);
+    usb_event.u.added_device.interface_index = -1;

if (!(ret = libusb_get_active_config_descriptor(libusb_device, &config_desc)))
     {
+        const struct libusb_interface *interface;
+        const struct libusb_interface_descriptor *iface_desc;
+
+        if (config_desc->bNumInterfaces == 1)
+        {
+            interface = &config_desc->interface[0];
+            if (interface->num_altsetting != 1)
+                FIXME("Interface 0 has %u alternate settings; using the first one.\n",
+                        interface->num_altsetting);
+            iface_desc = &interface->altsetting[0];
+
+            usb_event.u.added_device.class = iface_desc->bInterfaceClass;
+            usb_event.u.added_device.subclass = iface_desc->bInterfaceSubClass;
+            usb_event.u.added_device.protocol = iface_desc->bInterfaceProtocol;
+            usb_event.u.added_device.interface_index = iface_desc->bInterfaceNumber;
+        }
+        queue_event(&usb_event);
+
         /* Create new devices for interfaces of composite devices.
          *
          * On Windows this is the job of usbccgp.sys, a separate driver that
@@ -163,10 +181,9 @@ static void add_usb_device(libusb_device *libusb_device)

for (i = 0; i < config_desc->bNumInterfaces; ++i)
             {
-                const struct libusb_interface *interface = &config_desc->interface[i];
-                const struct libusb_interface_descriptor *iface_desc;
                 struct unix_device *unix_iface;

+                interface = &config_desc->interface[i];
                 if (interface->num_altsetting != 1)
                     FIXME("Interface %u has %u alternate settings; using the first one.\n",
                             i, interface->num_altsetting);
@@ -196,6 +213,8 @@ static void add_usb_device(libusb_device *libusb_device)
     }
     else
     {
+        queue_event(&usb_event);
+
         ERR("Failed to get configuration descriptor: %s\n", libusb_strerror(ret));
     }
 }
diff --git a/dlls/wineusb.sys/unixlib.h b/dlls/wineusb.sys/unixlib.h
index eee16c8fc2b..2b362abde6c 100644
--- a/dlls/wineusb.sys/unixlib.h
+++ b/dlls/wineusb.sys/unixlib.h
@@ -45,7 +45,7 @@ struct usb_event
             UINT16 vendor, product, revision;
             UINT8 class, subclass, protocol;
             bool interface;
-            UINT8 interface_index;
+            INT16 interface_index;
         } added_device;
         struct unix_device *removed_device;
         IRP *completed_irp;
diff --git a/dlls/wineusb.sys/wineusb.c b/dlls/wineusb.sys/wineusb.c
index 7bc5958ebb4..8e9fc45ab85 100644
--- a/dlls/wineusb.sys/wineusb.c
+++ b/dlls/wineusb.sys/wineusb.c
@@ -76,7 +76,7 @@ struct usb_device
     DEVICE_OBJECT *device_obj;

bool interface;
-    uint8_t interface_index;
+    int16_t interface_index;

uint8_t class, subclass, protocol;

@@ -377,10 +377,20 @@ static void get_hardware_ids(const struct usb_device *device, struct string_buff

static void get_compatible_ids(const struct usb_device *device, struct string_buffer *buffer)
 {
-    append_id(buffer, L"USB\Class_%02x&SubClass_%02x&Prot_%02x",
-            device->class, device->subclass, device->protocol);
-    append_id(buffer, L"USB\Class_%02x&SubClass_%02x", device->class, device->subclass);
-    append_id(buffer, L"USB\Class_%02x", device->class);
+    if (device->interface_index != -1)
+    {
+        append_id(buffer, L"USB\Class_%02x&SubClass_%02x&Prot_%02x",
+                device->class, device->subclass, device->protocol);
+        append_id(buffer, L"USB\Class_%02x&SubClass_%02x", device->class, device->subclass);
+        append_id(buffer, L"USB\Class_%02x", device->class);
+    }
+    else
+    {
+        append_id(buffer, L"USB\DevClass_%02x&SubClass_%02x&Prot_%02x",
+                device->class, device->subclass, device->protocol);
+        append_id(buffer, L"USB\DevClass_%02x&SubClass_%02x", device->class, device->subclass);
+        append_id(buffer, L"USB\DevClass_%02x", device->class);
+    }
     append_id(buffer, L"");
 }