On Tue, Jan 19, 2016 at 01:45:35PM +0800, Li Jun wrote:
> Since hnp polling will directly invoke otg_statemachine() with irq
> enabled, which will cause nobody cared irq while remove host role
> for B host, so we disable irq for it.
>
Would you explain more about which interrupt is nobody cared?
> Signed-off-by: Li Jun <jun.li@xxxxxxx>
> ---
> drivers/usb/chipidea/otg_fsm.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/usb/chipidea/otg_fsm.c b/drivers/usb/chipidea/otg_fsm.c
> index cb28e76..e5def6a 100644
> --- a/drivers/usb/chipidea/otg_fsm.c
> +++ b/drivers/usb/chipidea/otg_fsm.c
> @@ -545,8 +545,10 @@ static int ci_otg_start_host(struct otg_fsm *fsm, int on)
> ci_role_stop(ci);
> ci_role_start(ci, CI_ROLE_HOST);
> } else {
> + disable_irq(ci->irq);
> ci_role_stop(ci);
> ci_role_start(ci, CI_ROLE_GADGET);
> + enable_irq(ci->irq);
> }
> return 0;
> }
> --
> 1.9.1
>
--
Best Regards,
Peter Chen
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