On Tuesday 26 November 2013 18:39:54 Felipe Balbi wrote: > Hi, > > On Tue, Nov 26, 2013 at 06:28:05PM +0100, Pali Rohár wrote: > > [ snip ] > > > > > (above dump is from 3.12-rc5 kernel) > > > > > > looks like it's trying to do i2c transfers from atomic. > > > But why only when obex is enabled ? Makes no sense. What > > > do you have on userland ? Is there anything trying to > > > access the obex interface ? Was the USB cable attached at > > > that time ? > > > > Yes, only when initliaizing obex. Other is ok. Problem is > > there with Maemo userland and also with clean userland > > (rescueOS) where is only busybox and some simple init > > scripts. On Maemo maybe something is trying to access obex, > > but on rescueOS for sure nothing. Problem happends when > > cable is attached and also when not = always. > > As a debug effort, can you apply hack below and see if it > "helps" ? > > diff --git a/drivers/usb/gadget/f_obex.c > b/drivers/usb/gadget/f_obex.c index ad39f1d..4af2f06 100644 > --- a/drivers/usb/gadget/f_obex.c > +++ b/drivers/usb/gadget/f_obex.c > @@ -267,10 +267,12 @@ static void obex_connect(struct gserial > *g) if (!obex->can_activate) > return; > > +#if 0 > status = usb_function_activate(&g->func); > if (status) > DBG(cdev, "obex ttyGS%d function activate --> %d\n", > obex->port_num, status); > +#endif > } > > static void obex_disconnect(struct gserial *g) > @@ -282,10 +284,12 @@ static void obex_disconnect(struct > gserial *g) if (!obex->can_activate) > return; > > +#if 0 > status = usb_function_deactivate(&g->func); > if (status) > DBG(cdev, "obex ttyGS%d function deactivate --> %d\n", > obex->port_num, status); > +#endif > } > > /*----------------------------------------------------------- > --------------*/ @@ -372,6 +376,7 @@ static int > obex_bind(struct usb_configuration *c, struct usb_function > *f) if (status) > goto fail; > > +#if 0 > /* Avoid letting this gadget enumerate until the userspace > * OBEX server is active. > */ > @@ -381,6 +386,7 @@ static int obex_bind(struct > usb_configuration *c, struct usb_function *f) obex->port_num, > status); > else > obex->can_activate = true; > +#endif > > > DBG(cdev, "obex ttyGS%d: %s speed IN/%s OUT/%s\n", Hi, with above patch g_nokia.ko working and not crashing. -- Pali Rohár pali.rohar@xxxxxxxxx
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