From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
To: "Luis R. Rodriguez" <mcgrof@kernel.org>,
Arend van Spriel <arend.vanspriel@broadcom.com>
Cc: Daniel Wagner <daniel.wagner@bmw-carit.de>,
Bjorn Andersson <bjorn.andersson@linaro.org>,
Daniel Wagner <wagi@monom.org>,
Bastien Nocera <hadess@hadess.net>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Johannes Berg <johannes.berg@intel.com>,
Kalle Valo <kvalo@codeaurora.org>,
Ohad Ben-Cohen <ohad@wizery.com>,
linux-input@vger.kernel.org, linux-kselftest@vger.kernel.org,
linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [RFC v0 7/8] Input: ims-pcu: use firmware_stat instead of completion
Date: Sun, 31 Jul 2016 00:23:09 -0700 [thread overview]
Message-ID: <C528E404-0CA5-46B4-B551-B1D4B58BC053@gmail.com> (raw)
In-Reply-To: <20160730165817.GQ3296@wotan.suse.de>
On July 30, 2016 9:58:17 AM PDT, "Luis R. Rodriguez" <mcgrof@kernel.org> wrote:
>On Sat, Jul 30, 2016 at 02:42:41PM +0200, Arend van Spriel wrote:
>> + Luis (again) ;-)
>>
>> On 29-07-16 08:13, Daniel Wagner wrote:
>> > 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@bmw-carit.de>
>> >>>>
>> >> [..]
>> >>>
>> >>> Do not quite like it... I'd rather asynchronous request give out
>a
>> >>> firmware status pointer that could be used later on.
>>
>> Excellent. Why not get rid of the callback function as well and have
>> fw_loading_wait() return result (0 = firmware available, < 0 = fail).
>> Just to confirm, you are proposing a new API function next to
>> request_firmware_nowait(), right?
>
>If proposing new firmware_class patches please bounce / Cc me, I've
>recently asked for me to be added to MAINTAINERS so I get these
>e-mails as I'm working on a new flexible API which would allow us
>to extend the firmware API without having to care about the old
>stupid usermode helper at all.
I am not sure why we started calling usermode helper "stupid". We only had to implement direct kernel firmware loading because udev/stsremd folks had "interesting" ideas how events should be handled; but having userspace to feed us data is not stupid.
If we want to overhaul firmware loading support we need to figure out how to support case when a driver want to [asynchronously] request firmware/config/blob and the rest of the system is not ready. Even if we want kernel to do read/load the data we need userspace to tell kernel when firmware partition is available, until then the kernel should not fail the request.
Thanks.
--
Dmitry
next prev parent reply other threads:[~2016-07-31 7:23 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-28 7:55 [RFC v0 0/8] Reuse firmware loader helpers Daniel Wagner
2016-07-28 7:55 ` [RFC v0 1/8] selftests: firmware: do not abort test too early Daniel Wagner
2016-07-28 7:55 ` [RFC v0 2/8] selftests: firmware: do not clutter output Daniel Wagner
2016-07-28 7:55 ` [RFC v0 3/8] firmware: Factor out firmware load helpers Daniel Wagner
2016-07-28 15:01 ` Dan Williams
2016-07-29 6:07 ` Daniel Wagner
2016-07-28 17:57 ` Dmitry Torokhov
2016-07-29 6:08 ` Daniel Wagner
2016-07-28 7:55 ` [RFC v0 4/8] Input: goodix: use firmware_stat instead of completion Daniel Wagner
2016-07-28 11:22 ` Bastien Nocera
2016-07-28 11:59 ` Daniel Wagner
2016-07-28 12:20 ` Bastien Nocera
2016-07-28 13:10 ` Daniel Wagner
2016-07-28 7:55 ` [RFC v0 5/8] ath9k_htc: " Daniel Wagner
2016-07-28 7:55 ` [RFC v0 6/8] remoteproc: " Daniel Wagner
2016-07-28 7:55 ` [RFC v0 7/8] Input: ims-pcu: " Daniel Wagner
2016-07-28 18:33 ` Dmitry Torokhov
2016-07-28 19:01 ` Bjorn Andersson
2016-07-29 6:13 ` Daniel Wagner
2016-07-30 12:42 ` Arend van Spriel
2016-07-30 16:58 ` Luis R. Rodriguez
2016-07-31 7:23 ` Dmitry Torokhov [this message]
2016-08-01 12:26 ` Daniel Wagner
2016-08-01 19:44 ` Luis R. Rodriguez
2016-08-02 5:49 ` Daniel Wagner
2016-08-02 6:34 ` Luis R. Rodriguez
2016-08-02 6:53 ` Daniel Wagner
2016-08-02 7:41 ` Luis R. Rodriguez
2016-08-03 6:57 ` Daniel Wagner
2016-08-03 15:55 ` Luis R. Rodriguez
2016-08-03 16:18 ` Dmitry Torokhov
2016-08-03 17:37 ` Luis R. Rodriguez
2016-08-03 18:40 ` Luis R. Rodriguez
2016-08-03 22:26 ` Bjorn Andersson
2016-08-03 7:42 ` Dmitry Torokhov
2016-08-03 11:43 ` Arend van Spriel
2016-08-03 15:18 ` Luis R. Rodriguez
2016-08-03 15:35 ` Dmitry Torokhov
2016-08-03 20:42 ` Arend van Spriel
2016-08-03 16:03 ` Luis R. Rodriguez
2016-08-03 17:39 ` Bjorn Andersson
2016-08-03 18:08 ` Luis R. Rodriguez
2016-08-01 19:36 ` Luis R. Rodriguez
2016-08-01 17:19 ` Bjorn Andersson
2016-08-01 19:56 ` Luis R. Rodriguez
2016-08-01 21:34 ` Dmitry Torokhov
2016-07-31 7:17 ` Dmitry Torokhov
2016-07-28 7:55 ` [RFC v0 8/8] iwl4965: " Daniel Wagner
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