Hi Simon-san,
Thank you for your review!
> From: Simon Horman, Sent: Tuesday, May 15, 2018 4:54 PM
> On Mon, May 14, 2018 at 06:15:59PM +0900, Yoshihiro Shimoda wrote:
<snip>
> > static void usb3_set_mode(struct renesas_usb3 *usb3, bool host)
> > {
> > - _usb3_set_mode(usb3, host);
> > + if (usb3->role_sw)
> > + usb_role_switch_set_role(usb3->role_sw, host ?
> > + USB_ROLE_HOST : USB_ROLE_DEVICE);
> > + else
> > + _usb3_set_mode(usb3, host);
> > }
> >
> > static void usb3_vbus_out(struct renesas_usb3 *usb3, bool enable)
> > @@ -672,8 +676,8 @@ static void usb3_mode_config(struct renesas_usb3 *usb3, bool host, bool a_dev)
> > {
> > unsigned long flags;
> >
> > - spin_lock_irqsave(&usb3->lock, flags);
> > usb3_set_mode(usb3, host);
> > + spin_lock_irqsave(&usb3->lock, flags);
>
> Hi Shimoda-san,
>
> could you clarify why moving this lock is safe?
The usb3_set_mode() is possible to call usb_role_switch_set_role() API
and usb_role_switch_set_role() calls mutex_lock().
So, this moving this lock (especially avoiding irqsave) needs.
Best regards,
Yoshihiro Shimoda
> > usb3_vbus_out(usb3, a_dev);
> > /* for A-Peripheral or forced B-device mode */
> > if ((!host && a_dev) ||
> > --
> > 1.9.1
> >
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