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Report superspeed properly on Win7

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Win7 with USB 3.0 stack might not report superspeed
the same way as Win8 does. Use bcdUSB field of device
descriptor for that (USB 3.0 device connected to USB 2.x
port usually falls to USB 2 compatible configuration).
Getting the speed from HUB driver via IOCTL is more
complicated.

Signed-off-by: Yuri Benditovich <yuri.benditovich@daynix.com>
This commit is contained in:
Yuri Benditovich 2018-10-17 12:02:19 +03:00 • committed by Yan Vugenfirer
parent 960f44ed2c
commit 4d1ecea50d
1 changed files with 9 additions and 0 deletions
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9
UsbDk/FilterDevice.cpp
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@ -362,6 +362,15 @@ void CUsbDkHubFilterStrategy::RegisterNewChild(PDEVICE_OBJECT PDO)
return;
}
#if (NTDDI_VERSION == NTDDI_WIN7)
// recheck on Win7, superspeed indication as on Win8 might be not available
if (Speed == HighSpeed && DevDescriptor.bcdUSB >= 0x300)
{
TraceEvents(TRACE_LEVEL_INFORMATION, TRACE_FILTERDEVICE, "%!FUNC! superspeed assigned according to BCD field");
Speed = SuperSpeed;
}
#endif
CUsbDkChildDevice::TDescriptorsCache CfgDescriptors(DevDescriptor.bNumConfigurations);
if (!CfgDescriptors.Create())