Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1214260

Re: Problems loading firmware using built-in drivers with kernels that use initramfs.

From	Ming Lei <ming.lei@canonical.com>
Newsgroups	linux.kernel
Subject	Re: Problems loading firmware using built-in drivers with kernels that use initramfs.
Date	2015-08-27 03:00 +0200
Message-ID	<q1THP-5rs-11@gated-at.bofh.it> (permalink)
References	(6 earlier) <q1BhU-4vP-9@gated-at.bofh.it> <q1BBg-4SM-11@gated-at.bofh.it> <q1CdY-5RD-9@gated-at.bofh.it> <q1DWq-8lX-11@gated-at.bofh.it> <q1Nj4-4Uz-7@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Show all headers | View raw

On Thu, Aug 27, 2015 at 2:07 AM, Linus Torvalds
<torvalds@linux-foundation.org> wrote:
> On Wed, Aug 26, 2015 at 1:06 AM, Liam Girdwood
> <liam.r.girdwood@linux.intel.com> wrote:
>>
>> I think the options are to either :-
>>
>> 1) Don not support audio DSP drivers using topology data as built-in
>> drivers. Audio is not really a critical system required for booting
>> anyway.
>
> Yes, forcing it to be a module and not letting people compile it in by
> mistake (and then not have it work) is an option.
>
> That said, there are situations where people don't want to use
> modules. I used to eschew them for security reasons, for example - now
> I instead just do a one-time temporary key. But others may have other
> reasons to try to avoid modules.
>
>> 2) Create a default PCM for every driver that has topology data on the
>> assumption that every sound card will at least 1 PCM. This PCM can then
>> be re-configured when the FW is loaded.
>
> That would seem to be the better option if it is reasonably implementable.
>
> Of course, some kind of timer-based retry (limited *somehow*) of the
> fw loading could work too, but smells really really hacky.

Yeah, years ago, we discussed to use -EPROBE_DEFER for the situation,
which should be one kind of fix, but looks there were objections at that time.

thanks,
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

Re: Problems loading firmware using built-in drivers with kernels that use initramfs. "Luis R. Rodriguez" <mcgrof@suse.com> - 2015-08-25 21:40 +0200
Re: Problems loading firmware using built-in drivers with kernels that use initramfs. Takashi Iwai <tiwai@suse.de> - 2015-08-25 21:50 +0200
Re: Problems loading firmware using built-in drivers with kernels that use initramfs. Dmitry Torokhov <dmitry.torokhov@gmail.com> - 2015-08-25 22:00 +0200
Re: Problems loading firmware using built-in drivers with kernels that use initramfs. Linus Torvalds <torvalds@linux-foundation.org> - 2015-08-25 22:30 +0200
Re: Problems loading firmware using built-in drivers with kernels that use initramfs. yalin wang <yalin.wang2010@gmail.com> - 2015-08-26 07:40 +0200
RE: Problems loading firmware using built-in drivers with kernels that use initramfs. "Jie, Yang" <yang.jie@intel.com> - 2015-08-26 07:20 +0200
Re: Problems loading firmware using built-in drivers with kernels that use initramfs. Takashi Iwai <tiwai@suse.de> - 2015-08-26 07:40 +0200
RE: Problems loading firmware using built-in drivers with kernels that use initramfs. "Jie, Yang" <yang.jie@intel.com> - 2015-08-26 08:20 +0200
Re: Problems loading firmware using built-in drivers with kernels that use initramfs. Liam Girdwood <liam.r.girdwood@linux.intel.com> - 2015-08-26 10:10 +0200
RE: Problems loading firmware using built-in drivers with kernels that use initramfs. "Jie, Yang" <yang.jie@intel.com> - 2015-08-26 10:40 +0200
Re: Problems loading firmware using built-in drivers with kernels that use initramfs. Liam Girdwood <liam.r.girdwood@linux.intel.com> - 2015-08-26 11:10 +0200
RE: Problems loading firmware using built-in drivers with kernels that use initramfs. "Lin, Mengdong" <mengdong.lin@intel.com> - 2015-08-27 04:00 +0200
Re: Problems loading firmware using built-in drivers with kernels that use initramfs. Liam Girdwood <liam.r.girdwood@linux.intel.com> - 2015-08-27 09:10 +0200
Re: Problems loading firmware using built-in drivers with kernels that use initramfs. Linus Torvalds <torvalds@linux-foundation.org> - 2015-08-26 20:10 +0200
Re: Problems loading firmware using built-in drivers with kernels that use initramfs. Ming Lei <ming.lei@canonical.com> - 2015-08-27 03:00 +0200
Re: Problems loading firmware using built-in drivers with kernels that use initramfs. "Luis R. Rodriguez" <mcgrof@suse.com> - 2015-08-29 03:20 +0200
Re: Problems loading firmware using built-in drivers with kernels that use initramfs. Ming Lei <ming.lei@canonical.com> - 2015-08-29 06:10 +0200
Re: Problems loading firmware using built-in drivers with kernels that use initramfs. Takashi Iwai <tiwai@suse.de> - 2015-08-29 09:20 +0200
Re: Problems loading firmware using built-in drivers with kernels that use initramfs. Arend van Spriel <arend@broadcom.com> - 2015-08-29 11:00 +0200
Re: Problems loading firmware using built-in drivers with kernels that use initramfs. Ming Lei <ming.lei@canonical.com> - 2015-08-29 12:40 +0200
Re: Problems loading firmware using built-in drivers with kernels that use initramfs. Arend van Spriel <arend@broadcom.com> - 2015-08-30 10:30 +0200
Re: Problems loading firmware using built-in drivers with kernels that use initramfs. Linus Torvalds <torvalds@linux-foundation.org> - 2015-08-30 20:20 +0200
Re: Problems loading firmware using built-in drivers with kernels that use initramfs. Ming Lei <ming.lei@canonical.com> - 2015-08-31 16:30 +0200
Re: Problems loading firmware using built-in drivers with kernels that use initramfs. "Luis R. Rodriguez" <mcgrof@suse.com> - 2015-09-02 03:20 +0200
Re: Problems loading firmware using built-in drivers with kernels that use initramfs. Arend van Spriel <arend@broadcom.com> - 2015-09-02 14:20 +0200
Re: Problems loading firmware using built-in drivers with kernels that use initramfs. Arend van Spriel <arend@broadcom.com> - 2015-09-02 14:20 +0200
Re: Problems loading firmware using built-in drivers with kernels that use initramfs. "Luis R. Rodriguez" <mcgrof@suse.com> - 2015-09-02 21:00 +0200
Re: Problems loading firmware using built-in drivers with kernels that use initramfs. Arend van Spriel <arend@broadcom.com> - 2015-09-02 23:10 +0200
Re: Problems loading firmware using built-in drivers with kernels that use initramfs. Dmitry Torokhov <dmitry.torokhov@gmail.com> - 2015-09-03 01:20 +0200
Re: Problems loading firmware using built-in drivers with kernels that use initramfs. "Luis R. Rodriguez" <mcgrof@suse.com> - 2015-09-03 01:30 +0200
Re: Problems loading firmware using built-in drivers with kernels that use initramfs. Dmitry Torokhov <dmitry.torokhov@gmail.com> - 2015-09-03 01:30 +0200
Re: Problems loading firmware using built-in drivers with kernels that use initramfs. "Luis R. Rodriguez" <mcgrof@suse.com> - 2015-09-03 01:50 +0200
Re: Problems loading firmware using built-in drivers with kernels that use initramfs. Arend van Spriel <arend@broadcom.com> - 2015-09-03 19:30 +0200
Re: Problems loading firmware using built-in drivers with kernels that use initramfs. Dmitry Torokhov <dmitry.torokhov@gmail.com> - 2015-09-03 19:40 +0200
Re: Problems loading firmware using built-in drivers with kernels that use initramfs. Dmitry Torokhov <dmitry.torokhov@gmail.com> - 2015-09-02 22:50 +0200
Re: Problems loading firmware using built-in drivers with kernels that use initramfs. "Luis R. Rodriguez" <mcgrof@suse.com> - 2015-09-02 02:40 +0200

csiph-web