On Thu, 2013-12-12 at 23:19 +0100, Kay Sievers wrote: > On Thu, Dec 12, 2013 at 10:58 PM, Michael Biebl <email@michaelbiebl.de> wrote: > > This was removed upstream [1] and is highly unlikely to be added back. > > Especially considering that the user space firmware loader is scheduled > > to be removed sooner rather then later. > > > > This most likely means d-i needs to be updated to use some kind of > > different mechanism to detect missing firmware. > > > > Kay, what is the recommended approach nowadays to detect such missing > > firmware? > > There is no replacement for that. Userspace is no longer in the loop > any more regarding firmware loading, it's all the kernel's job only. > Hence, there will be no facility in udev for handling firmware, or > getting notified about that. > > The only possible solution would be to add explicit messages to the > kernel drivers in case a firmware is really *missing* and the device > does not just probe for stuff until it finds something. I've been trying to do that with some patches to the Debian kernel that put success/failure logging in the firmware loader rather than callers. I haven't submitted those upstream yet as they're not quite right... > There are quite a lot devices which just look for *updates* and do not > need anything to function. There are a few of those, yes. And there are drivers that look for multiple different versions with different filenames (e.g. iwlwifi), and others where people just thought it was fun to rename the firmware a few times. Those would need to be able to override failure logging. > Such an explicit message would probably use printk_emit() and pass > structured data with the filename and the ides from the kernel to > userspace, and on systemd systems the journal would pick up the > MESSAGE_ID and do something with it, or provide the data to other > consumers. Good idea, but I don't expect to see systemd in the installer quite yet! Ben. -- Ben Hutchings Knowledge is power. France is bacon.
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