On Wed, Dec 19, 2012 at 12:56:12PM -0200, Fabio Estevam wrote: > Hi Greg, > > On Tue, Dec 18, 2012 at 12:43 AM, Greg KH <greg@xxxxxxxxx> wrote: > > On Tue, Dec 18, 2012 at 12:01:35AM -0200, Fabio Estevam wrote: > >> Hi, > >> > >> Booting a 3.7 kernel on a mx6qsabrelite board via NFS and using an > >> asix USB/Ethernet adapter and then I try to transfer a 10MB file from > >> the target to the host: > > > > Has this ever worked before on any older kernel? > > We did more experiments on this and we noticed that: > > - mx51 running kernel 3.7 does not show this problem (tested a non-dt > mx51 kernel, which uses drivers/usb/host/ehci-mxc.c instead of the > chipidea driver.) > - x86 running 3.2 kernel does not show this problem > - usb support on mx6 has appeared on 3.6, but running an out-of-tree > 3.0.35 kernel also shows the same issue. > - Doing long file transfers via mass storage on mx6 running 3.7 works fine. > > Shawn/Sascha/Peter, > > Any suggestions as to how debug this? By looking at the kernel dumps > it seems to point to 'gic_handle_irq' area. Hi Fabio, Please to see if the Stream mode disable (bit4, usbmode) is set or not? If it is not, please try below patch diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c index c97503b..258bc02 100644 --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -227,6 +227,7 @@ static void tdi_reset (struct ehci_hcd *ehci) tmp = ehci_readl(ehci, &ehci->regs->usbmode); tmp |= USBMODE_CM_HC; + tmp |= (1 << 4); /* disable stream mode */ /* The default byte access to MMR space is LE after * controller reset. Set the required endian mode * for transfer buffers to match the host microprocessor > > Thanks, > > Fabio Estevam > -- Best Regards, Peter Chen -- 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
