linux-kernel - Re: [RFC v0 7/8] Input: ims-pcu: use firmware

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <c05a7b98-5ada-701f-9a77-65d81b841c17@bmw-carit.de>
Date:	Fri, 29 Jul 2016 08:13:01 +0200
From:	Daniel Wagner <daniel.wagner@...-carit.de>
To:	Bjorn Andersson <bjorn.andersson@...aro.org>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>
CC:	Daniel Wagner <wagi@...om.org>, Bastien Nocera <hadess@...ess.net>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Johannes Berg <johannes.berg@...el.com>,
	Kalle Valo <kvalo@...eaurora.org>,
	Ohad Ben-Cohen <ohad@...ery.com>,
	<linux-input@...r.kernel.org>, <linux-kselftest@...r.kernel.org>,
	<linux-wireless@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [RFC v0 7/8] Input: ims-pcu: use firmware_stat instead of
 completion

On 07/28/2016 09:01 PM, Bjorn Andersson wrote:
> On Thu 28 Jul 11:33 PDT 2016, Dmitry Torokhov wrote:
>
>> On Thu, Jul 28, 2016 at 09:55:11AM +0200, Daniel Wagner wrote:
>>> From: Daniel Wagner <daniel.wagner@...-carit.de>
>>>
> [..]
>>
>> Do not quite like it... I'd rather asynchronous request give out a
>> firmware status pointer that could be used later on.
>>
>> 	pcu->fw_st = request_firmware_async(IMS_PCU_FIRMWARE_NAME,
>> 					    pcu,
>> 					    ims_pcu_process_async_firmware);
>> 	if (IS_ERR(pcu->fw_st))
>> 		return PTR_ERR(pcu->fw_st);
>>
>> 	....
>>
>> 	fw_loading_wait(pcu->fw_st);
>>
>
> In the remoteproc case (patch 6) this would clean up the code, rather
> than replacing the completion API 1 to 1. I like it!

IIRC most drivers do it the same way. So request_firmware_async() indeed 
would be good thing to have. Let me try that.

Thanks for the excellent feedback.

cheers,
daniel