linux-kernel - Re: [PATCH 2/2] drivers: usb: dwc2: remove 'force' parameter from kill_all

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Message-id: <54C88D46.5080803@samsung.com>
Date:	Wed, 28 Jan 2015 08:18:30 +0100
From:	Robert Baldyga <r.baldyga@...sung.com>
To:	balbi@...com
Cc:	paulz@...opsys.com, gregkh@...uxfoundation.org,
	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] drivers: usb: dwc2: remove 'force' parameter from
 kill_all_requests()

On 01/27/2015 04:42 PM, Felipe Balbi wrote:
> On Mon, Jan 05, 2015 at 10:31:35AM +0100, Robert Baldyga wrote:
>> This patch fixes in simpler way the bug described in [1] and [2]. It
>> looks like DWC2 is the only UDC driver that doesn't force usb requests
>> to complete in ep_disable() function. This causes described problem,
>> because we have no guarantee that all requests will be completed before
>> unbind of usb function.
>>
>> To fix this problem we force all requests of disabled endpoint to complete.
>> Also currently running request is not handled. This allowed to simplify
>> code of kill_all_requests() function, because 'force' parameter is always
>> set to true, so we don't need it anymore.
>>
>> In s3c_hsotg_rx_data() we change function used to print message when active
>> request is NULL from dev_warn() to dev_dbg(), because such situation is
>> harmless for driver and now it can take place during normal endpoint
>> disabling.
>>
>> [1] https://lkml.org/lkml/2014/12/9/283
>> [2] https://lkml.org/lkml/2014/12/12/360
>>
>> Signed-off-by: Robert Baldyga <r.baldyga@...sung.com>
> 
> this fails to apply:
> 
> checking file drivers/usb/dwc2/gadget.c
> Hunk #1 succeeded at 2602 (offset 35 lines).
> Hunk #2 FAILED at 2588.
> Hunk #3 succeeded at 2645 (offset 36 lines).
> Hunk #4 FAILED at 2924.
> 2 out of 4 hunks FAILED
> 

Isn't this patch already in linux-next? I see it's also in your 'next'
branch.
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