vbox的更動 46806 路徑 trunk/src/VBox/Devices/USB/VUSBReadAhead.cpp

時間撮記:

2013-6-26 下午02:24:17 (11 年 以前)

作者:

vboxsync

訊息:

USB: respect the case that vusbDevGetRh() returns NULL

檔案:

• trunk/src/VBox/Devices/USB/VUSBReadAhead.cpp (修改) (1 筆差異)

trunk/src/VBox/Devices/USB/VUSBReadAhead.cpp

@@ -369 +369 @@
     if (pArgs)
     {
+        PVUSBROOTHUB pRh = vusbDevGetRh(pDev);
         pArgs->pDev  = pDev;
         pArgs->pPipe = pPipe;
         pArgs->fTerminate = false;
-        pArgs->fHighSpeed = ((vusbDevGetRh(pDev)->fHcVersions & VUSB_STDVER_20) != 0);
+        pArgs->fHighSpeed = pRh && ((pRh->fHcVersions & VUSB_STDVER_20) != 0);
         if (pArgs->fHighSpeed)
             rc = RTThreadCreate(&pPipe->ReadAheadThread, vusbDevReadAheadThread, pArgs, 0, RTTHREADTYPE_IO, RTTHREADFLAGS_WAITABLE, "USBISOC");