Re: [PATCH v6 02/10] usb: dwc3: omap: Make the wrapper interrupt shared

From: Roger Quadros
Date: Mon Apr 11 2016 - 09:15:51 EST


On 11/04/16 15:58, Felipe Balbi wrote:
>
> Hi,
>
> Roger Quadros <rogerq@xxxxxx> writes:
>>>> diff --git a/drivers/usb/dwc3/dwc3-omap.c b/drivers/usb/dwc3/dwc3-omap.c
>>>> index 22e9606..51ca098 100644
>>>> --- a/drivers/usb/dwc3/dwc3-omap.c
>>>> +++ b/drivers/usb/dwc3/dwc3-omap.c
>>>> @@ -274,19 +274,25 @@ static irqreturn_t dwc3_omap_interrupt(int irq, void *_omap)
>>>> {
>>>> struct dwc3_omap *omap = _omap;
>>>> u32 reg;
>>>> + int ret = IRQ_NONE;
>>>>
>>>> reg = dwc3_omap_read_irqmisc_status(omap);
>>>>
>>>> + if (reg)
>>>> + ret = IRQ_HANDLED;
>>>
>>> you can avoid the local variable by returning early here.
>>
>> How can we return early? we need to check irq0_status as well right?
>
> Oh, that's true.
>
> There's one thing that I noticed though. dma_status is only written to,
> never read, so you should be able to remove it completely (a bit
> off-topic, sorry).
>
I'll send a patch for that. Can it go in -rc as well along with the other 2?

cheers,
-roger