Hi Robert, > > I'm using linux 2.6.31.6 on a Freescale i.MX27 (arm9) platform. For > > communication purposes the device uses the g_serial gadget to connect to > > a pc (running Windows XP, but with Linux on the other side the same > > problem occurs). > > Can you try to reproduce with the latest mainline kernel or mxc-master? Yes I could try, but first need to bring my board specific changes to the newest kernel. Indeed there hasn't been any relevant changes in neither the g_serial code (u_serial.c, serial.c) nor in the fsl_udc_core.c driver (diffed latest against mainline 2.6.34-rc7) nor in dmapool.c Indeed there was a single line changed in these files: diff fsl_udc_core.c /tmp/linux-2.6.34-rc7/drivers/usb/gadget /fsl_udc_core.c 686d685 < 2143c2142 < dma_free_coherent(dev, udc_controller->ep_qh_size, --- > dma_free_coherent(dev->parent, udc_controller->ep_qh_size, This is just a fix for an oops on driver removal which came in on 2.6.32 AFAIK, but does not matter in this case. Do you think a test with a newer kernel does make any sense anyway in this case? Regards, Ole Reinhardt -- Thermotemp GmbH, Embedded-IT Embedded Hard-/ Software and Open Source Development, Integration and Consulting http://www.embedded-it.de Geschäftsstelle Siegen - Steinstraße 67 - D-57072 Siegen - tel +49 (0)271 5513597, +49 (0)271-73681 - fax +49 (0)271 736 97 Hauptsitz - Hademarscher Weg 7 - 13503 Berlin Tel +49 (0)30 4315205 - Fax +49 (0)30 43665002 Geschäftsführer: Jörg Friedrichs, Ole Reinhardt Handelsregister Berlin Charlottenburg HRB 45978 UstID DE 156329280 -- 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
