Messages in this thread | | | Subject | Re: [PATCH v4 9/9] usb: dwc3: core: don't break during suspend/resume while we're dual-role | From | Sergei Shtylyov <> | Date | Thu, 3 Sep 2015 17:05:48 +0300 |
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Hello.
On 09/03/2015 05:01 PM, Roger Quadros wrote:
>>> We can't rely just on dr_mode to decide if we're in host or gadget >>> mode when we're configured as otg/dual-role. So while dr_mode is >>> OTG, we find out from the otg state machine if we're in host >>> or gadget mode and take the necessary actions during suspend/resume. >>> >>> Also make sure that we disable OTG irq and events during system suspend >>> so that we don't lockup the system during system suspend/resume. >>> >>> Signed-off-by: Roger Quadros <rogerq@ti.com> >>> --- >>> drivers/usb/dwc3/core.c | 27 +++++++++------------------ >>> 1 file changed, 9 insertions(+), 18 deletions(-) >>> >>> diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c >>> index 654aebf..25891e3 100644 >>> --- a/drivers/usb/dwc3/core.c >>> +++ b/drivers/usb/dwc3/core.c >>> @@ -1455,18 +1455,15 @@ static int dwc3_suspend(struct device *dev) >>> dwc->octl = dwc3_readl(dwc->regs, DWC3_OCTL); >>> dwc->oevt = dwc3_readl(dwc->regs, DWC3_OEVT); >>> dwc->oevten = dwc3_readl(dwc->regs, DWC3_OEVTEN); >>> + dwc3_writel(dwc->regs, DWC3_OEVTEN, 0); >>> + disable_irq(dwc->otg_irq); >>> } >>> >>> - switch (dwc->dr_mode) { >>> - case USB_DR_MODE_PERIPHERAL: >>> - case USB_DR_MODE_OTG: >>> + if (dwc->dr_mode == USB_DR_MODE_PERIPHERAL || >>> + ((dwc->dr_mode == USB_DR_MODE_OTG) && (dwc->fsm->protocol == PROTO_GADGET))) >> >> Hm, you're not very consistent about your parens. :-) > > You're right. Should be > > if ((dwc->dr_mode == USB_DR_MODE_PERIPHERAL) || > ((dwc->dr_mode == USB_DR_MODE_OTG) && (dwc->fsm->protocol == PROTO_GADGET)))
Parens around == are useless, I'd prefer if you deleted them. But if you'd like to keep them, let it be so. :-)
> -- > cheers, > -roger
MBR, Sergei
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