linux-kernel - Re: [PATCH v7 5/5] usb: dwc3: core: cleanup IRQ resources

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Date:	Tue, 10 May 2016 14:45:19 +0300
From:	Roger Quadros <rogerq@...com>
To:	Felipe Balbi <balbi@...nel.org>
CC:	<tony@...mide.com>, <Joao.Pinto@...opsys.com>,
	<sergei.shtylyov@...entembedded.com>, <peter.chen@...escale.com>,
	<jun.li@...escale.com>, <grygorii.strashko@...com>,
	<yoshihiro.shimoda.uh@...esas.com>, <nsekhar@...com>,
	<b-liu@...com>, <linux-usb@...r.kernel.org>,
	<linux-omap@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v7 5/5] usb: dwc3: core: cleanup IRQ resources

On 10/05/16 13:14, Felipe Balbi wrote:
> 
> Hi,
> 
> Roger Quadros <rogerq@...com> writes:
>>>> diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
>>>> index 186a886..2e20892 100644
>>>> --- a/drivers/usb/dwc3/core.h
>>>> +++ b/drivers/usb/dwc3/core.h
>>>> @@ -716,6 +716,8 @@ struct dwc3_scratchpad_array {
>>>>   * @maximum_speed: maximum speed requested (mainly for testing purposes)
>>>>   * @revision: revision register contents
>>>>   * @dr_mode: requested mode of operation
>>>> + * @gadget_irq: IRQ number for Peripheral IRQs
>>>> + * @otg_irq: IRQ number for OTG IRQs
>>>>   * @usb2_phy: pointer to USB2 PHY
>>>>   * @usb3_phy: pointer to USB3 PHY
>>>>   * @usb2_generic_phy: pointer to USB2 PHY
>>>> @@ -817,6 +819,9 @@ struct dwc3 {
>>>>  
>>>>  	enum usb_dr_mode	dr_mode;
>>>>  
>>>> +	int			gadget_irq;
>>>> +	int			otg_irq;
>>>
>>> while at that, let's add host_irq too and do proper changes to dwc3/host.c
>>
>> Sure. So we add host_irq here, and manually create an irq resource
>> in dwc3_host_init?
> 
> right :-) Then the code looks similar for otg, peripheral and host parts ;-)
> 
Just saw that host_irq is not used anywhere other than creating the XHCI platform
device. So I don't see why we need host_irq in struct dwc3.
It is obtained in dwc3_host_init() and consumed there itself.

cheers,
-roger