From: Tony Lindgren <[email protected]> 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 <[email protected]> Tested-by: Ladislav Michl <[email protected]> Signed-off-by: Tony Lindgren <[email protected]> Signed-off-by: Bin Liu <[email protected]> --- 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; } -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
