A S3/S4 issue about em28xx driver

Hi guys, I find an issue about the USB TV tuner, WinTV HVR950, which use em28xx driver. The linux can't going to S3/S4 when the device attach to USB2.0/USB3.0 ports. [Step] - Boot linux (either with or without x-windows) - Attach the HVR950 to USB port. - dmesg

[Bug Report]

Hi All I find a bug when I use the USB TV receiver(WinTV-HVR 950) on kernel v2.6.37-rc1. The bug appearances when the WinTV-HVR 950 plug out from the USB interface. The dmesg informations and testing environment are below here.  The bug never be found before the kernel v2.6.37-rc1. Are there