linux-kernel - RE: [PATCH v2] usb: cdnsp: Fixes issue with redundant Status Stage

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Date:   Wed, 29 Mar 2023 08:52:43 +0000
From:   Pawel Laszczak <pawell@...ence.com>
To:     Greg KH <gregkh@...uxfoundation.org>
CC:     "peter.chen@...nel.org" <peter.chen@...nel.org>,
        "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "stable@...r.kernel.org" <stable@...r.kernel.org>
Subject: RE: [PATCH v2] usb: cdnsp: Fixes issue with redundant Status Stage

>
>On Tue, Mar 21, 2023 at 08:40:53AM -0400, Pawel Laszczak wrote:
>> In some cases, driver trees to send Status Stage twice.
>> The first one from upper layer of gadget usb subsystem and second time
>> from controller driver.
>> This patch fixes this issue and remove tricky handling of
>> SET_INTERFACE from controller driver which is no longer needed.
>>
>> cc: <stable@...r.kernel.org>
>> Fixes: 3d82904559f4 ("usb: cdnsp: cdns3 Add main part of Cadence
>> USBSSP DRD Driver")
>> Signed-off-by: Pawel Laszczak <pawell@...ence.com>
>>
>> ---
>> Changelog:
>> v2:
>> - removed Smatch static checker warning
>
>This is already in 6.3-rc4, right?
>

v1 is in 6.3-rc4.

v2 fix the following issue: 
The patch 5bc38d33a5a1: "usb: cdnsp: Fixes issue with redundant Status Stage" from Mar 7, 2023, leads to the following Smatch static checker warning:

	drivers/usb/cdns3/cdnsp-ep0.c:470 cdnsp_setup_analyze()
	error: uninitialized symbol 'len'. 

Regards,
Pawel