linux-kernel - RE: [PATCH v7 05/10] usb: dwc3: make controller clear transfer resources after complete

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Date:   Wed, 5 Dec 2018 19:05:01 +0000
From:   Anurag Kumar Vulisha <anuragku@...inx.com>
To:     Felipe Balbi <balbi@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Shuah Khan <shuah@...nel.org>,
        Alan Stern <stern@...land.harvard.edu>,
        Johan Hovold <johan@...nel.org>,
        Jaejoong Kim <climbbb.kim@...il.com>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Roger Quadros <rogerq@...com>,
        Manu Gautam <mgautam@...eaurora.org>,
        "martin.petersen@...cle.com" <martin.petersen@...cle.com>,
        Bart Van Assche <bvanassche@....org>,
        Mike Christie <mchristi@...hat.com>,
        Matthew Wilcox <willy@...radead.org>,
        Colin Ian King <colin.king@...onical.com>
CC:     "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "v.anuragkumar@...il.com" <v.anuragkumar@...il.com>,
        Thinh Nguyen <thinhn@...opsys.com>,
        Tejas Joglekar <tejas.joglekar@...opsys.com>,
        Ajay Yugalkishore Pandey <APANDEY@...inx.com>
Subject: RE: [PATCH v7 05/10] usb: dwc3: make controller clear transfer
 resources after complete


HI Felipe,
>-----Original Message-----
>From: Felipe Balbi [mailto:balbi@...nel.org]
>Sent: Wednesday, December 05, 2018 2:32 PM
>To: Anurag Kumar Vulisha <anuragku@...inx.com>; Greg Kroah-Hartman
><gregkh@...uxfoundation.org>; Shuah Khan <shuah@...nel.org>; Alan Stern
><stern@...land.harvard.edu>; Johan Hovold <johan@...nel.org>; Jaejoong Kim
><climbbb.kim@...il.com>; Benjamin Herrenschmidt <benh@...nel.crashing.org>;
>Roger Quadros <rogerq@...com>; Manu Gautam <mgautam@...eaurora.org>;
>martin.petersen@...cle.com; Bart Van Assche <bvanassche@....org>; Mike
>Christie <mchristi@...hat.com>; Matthew Wilcox <willy@...radead.org>; Colin Ian
>King <colin.king@...onical.com>
>Cc: linux-usb@...r.kernel.org; linux-kernel@...r.kernel.org;
>v.anuragkumar@...il.com; Thinh Nguyen <thinhn@...opsys.com>; Tejas Joglekar
><tejas.joglekar@...opsys.com>; Ajay Yugalkishore Pandey <APANDEY@...inx.com>;
>Anurag Kumar Vulisha <anuragku@...inx.com>
>Subject: Re: [PATCH v7 05/10] usb: dwc3: make controller clear transfer resources
>after complete
>
>
>Hi,
>
>Anurag Kumar Vulisha <anurag.kumar.vulisha@...inx.com> writes:
>> @@ -2487,6 +2497,11 @@ static void dwc3_endpoint_interrupt(struct dwc3 *dwc,
>>  	}
>>
>>  	switch (event->endpoint_event) {
>> +	case DWC3_DEPEVT_XFERCOMPLETE:
>> +		if (!dep->stream_capable)
>> +			break;
>> +		dep->flags &= ~DWC3_EP_TRANSFER_STARTED;
>> +		/* Fall Through */
>
>instead, let's add a proper handler for this:
>
>dwc3_gadget_endpoint_transfer_complete(dep, event);
>
>That handler should be "self-sufficient". IOW, we shouldn't have this
>fall through here. This means that the other patch where you modify
>dwc3_gadget_transfer_in_progress() shouldn't be necessary, since that
>event shouldn't run for stream capable endpoints.
>

Thanks for  your suggestion, will implement the changes as said and send
the patches

>While rewriting the patches, please rebase on my testing/next as I have
>applied a few of the patches in this series. 

Okay , will rebase on top of testing/next and send the patches

Best Regards,
Anurag Kumar Vulisha