Hi Ezequiel, Thanks so much for replying, I worried my call for help would just become more buried. On Fri, Mar 29, 2013 at 3:34 PM, Ezequiel Garcia <ezequiel.garcia@xxxxxxxxxxxxxxxxxx> wrote: > Hi Ryan, > > Small world, uh? > > On Tue, Mar 26, 2013 at 02:55:48PM -0700, Ryan Press wrote: >> I'm working to get the 3.9-rc1 kernel working on the Globalscale >> Mirabox http://www.globalscaletechnologies.com/p-58-mirabox-development-kit.aspx. >> The PCIe driver by Thomas Petazzoni is not in mainline yet but I have >> his latest patch; this is required for the FL1009 host controller. >> >> I have everything mostly working. A USB 3.0 SSD works great, I tested >> un-buffered speed at 120 MB/s. I am trying to get a USB 2.0 video >> capture device working and I'm running into problems. So far I have >> tested using the uvcvideo and stk1160. They both fail with "xhci_hcd >> 0000:02:00.0: ERROR Unknown event condition, HC probably busted", >> although the uvcvideo device does work for perhaps a minute with >> smooth video. Sometimes it resets the host controller and the >> attached SSD goes offline. >> >> On a different ARM box running 3.8-rc1 kernel the stk1160 is known >> working, albeit it has only a USB 2.0 host controller. So I don't >> suspect this driver necessarily. >> >> Below is my dmesg log. I would think the PCIe driver could be the >> problem but because the USB 3.0 SSD works perfectly I'm not sure this >> is the case. Does anyone have insight into what's going on? >> > > As the stk1160 author, I'm glad to see someone is using it ;-) Wow, I didn't realize you wrote that as well. Thanks! This is really the driver I want to use. > FWIW, stk1160 (as any other video device) uses isochronous > URBs while your SSD (any other storage) *probably* uses bulk URBs. > > I'm not sure if this has anything to do with your problem, > but at least it means you shouldn't compare those devices as similar. Yeah, I know; many years ago I wrote a WDM USB video driver, but now I'm more a hardware guy. I was just thinking that if it was some underlying problem with the PCIe, I would also see it with the SSD. But I'm sure there's more than meets my eye. > I'll see what I can do about it and let you know. Great! This is really the last big problem I'm having and it would be fantastic to resolve it. Thanks, Ryan -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
