Paul Mundt wrote: > The current root hub polling code exhibits a spinlock recursion on the > private controller lock. r8a66597_root_hub_control() is called from > r8a66597_timer() which grabs the lock and disables IRQs. The following > chain emerges: > > r8a66597_timer() <-- lock taken > r8a66597_root_hub_control() > r8a66597_check_syssts() > usb_hcd_poll_rh_status() <-- acquires the same lock > /* insert death here */ > > The entire chain requires IRQs to be disabled, so we just unlock and > relock around the call to usb_hcd_poll_rh_status() while leaving the > IRQ state unchanged. > > Signed-off-by: Paul Mundt <lethal@xxxxxxxxxxxx> Thank you very much again! Acked-by: Yoshihiro Shimoda <shimoda.yoshihiro@xxxxxxxxxxx> Thanks, Yoshihiro Shimoda -- 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
