Hi, On Wed, Jul 30, 2008 at 2:59 PM, SUBHRANIL CHOUDHURY <subhra85@xxxxxxxxx> wrote: > Hi all, > I am trying to validate the USB driver on OMAP3430 with the > 2.6.22.18kernel. I am facing problems in the process while trying to > do a USB > transfer with DMA enabled. > The apllication is breaking in a function called consistent_sync. The error > message is like "Unable to handle kernel Null pointer". > > The issue is same with both OHCI and EHCI controller. And the issue is not > coming if i disable DMA. > > Has anyone tried USB packet transfer with DMA enabled? Please let me know. Why are you using such an old, support-less kernel ? Try with current 2.6.26 out of git repository. I've been using musb driver on omap3 for months now and it's working quite ok besides a few bugs hidden here and there (which I'm looking at). ps: this list has moved to linux-omap@xxxxxxxxxxxxxxx and musb driver is now being discussed in linux-usb@xxxxxxxxxxxxxxx mailing list, so please, care to Cc both lists mentioned here. -- Best Regards, Felipe Balbi felipebalbi@xxxxxxxxxxxxxxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html