[reactos] 02/04: [USBCCGP] Allow unconfiguring the device in USBCCGP_PDOSelectConfiguration.

[Thomas Faber]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=46b0f6d9deec116523bf8…

commit 46b0f6d9deec116523bf8748a05abecc0ac22672
Author:     Thomas Faber <thomas.faber(a)reactos.org>
AuthorDate: Sun Apr 7 11:54:43 2019 +0200
Commit:     Thomas Faber <thomas.faber(a)reactos.org>
CommitDate: Sun Apr 14 15:32:14 2019 +0200

    [USBCCGP] Allow unconfiguring the device in USBCCGP_PDOSelectConfiguration.
    
    Fixes device removal for USB audio devices.
---
 drivers/usb/usbccgp/pdo.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/usb/usbccgp/pdo.c b/drivers/usb/usbccgp/pdo.c
index 06a549f315..bcd0acb075 100644
--- a/drivers/usb/usbccgp/pdo.c
+++ b/drivers/usb/usbccgp/pdo.c
@@ -718,6 +718,14 @@ USBCCGP_PDOSelectConfiguration(
         return STATUS_SUCCESS;
     }
 
+    //
+    // if there is no configuration descriptor, unconfigure the device
+    //
+    if (Urb->UrbSelectConfiguration.ConfigurationDescriptor == NULL)
+    {
+        return STATUS_SUCCESS;
+    }
+
     // sanity checks
     //C_ASSERT(sizeof(struct _URB_HEADER) == 16);
     //C_ASSERT(FIELD_OFFSET(struct _URB_SELECT_CONFIGURATION, Interface.Length) == 24);