Hi, On Thu, Aug 18, 2016 at 03:40:38PM -0700, Tony Lindgren wrote: > If we have USB gadgets disabled and USB_MUSB_HOST set, we get > errors "possible irq lock inverssion dependency detected" > errors during boot. > > Let's fix the issue by adding start_musb flag and start > the controller after we're out of the spinlock protected > section. > > Reported-by: Ladislav Michl <ladis@xxxxxxxxxxxxxx> > Tested-by: Ladislav Michl <ladis@xxxxxxxxxxxxxx> > Signed-off-by: Tony Lindgren <tony@xxxxxxxxxxx> Signed-off-by: Bin Liu <b-liu@xxxxxx> Regards, -Bin. > --- > drivers/usb/musb/musb_virthub.c | 7 ++++++- > 1 file changed, 6 insertions(+), 1 deletion(-) > > diff --git a/drivers/usb/musb/musb_virthub.c b/drivers/usb/musb/musb_virthub.c > index 192248f..fe08e77 100644 > --- a/drivers/usb/musb/musb_virthub.c > +++ b/drivers/usb/musb/musb_virthub.c > @@ -290,6 +290,7 @@ int musb_hub_control( > u32 temp; > int retval = 0; > unsigned long flags; > + bool start_musb = false; > > spin_lock_irqsave(&musb->lock, flags); > > @@ -390,7 +391,7 @@ int musb_hub_control( > * logic relating to VBUS power-up. > */ > if (!hcd->self.is_b_host && musb_has_gadget(musb)) > - musb_start(musb); > + start_musb = true; > break; > case USB_PORT_FEAT_RESET: > musb_port_reset(musb, true); > @@ -451,5 +452,9 @@ error: > retval = -EPIPE; > } > spin_unlock_irqrestore(&musb->lock, flags); > + > + if (start_musb) > + musb_start(musb); > + > return retval; > } > -- > 2.8.1 > -- 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
