Failed to build against linux-6.16

[You-Sheng Yang]

1. from_timer macro renamed in v6.16-rc1 commit 41cb08555c416 ("treewide, timers: Rename from_timer() to timer_container_of()"):

CC [M] v4l2loopback.o
v4l2loopback.c: In function 'v4l2_loopback_add':
v4l2loopback.c:2910:9: error: implicit declaration of function 'setup_timer' [-Wimplicit-function-declaration]
 2910 | setup_timer(&dev->sustain_timer, sustain_timer_clb, nr);
      | ^~~~~~~~~~~
make[4]: *** [/usr/src/linux-headers-6.16.0-1-generic/scripts/Makefile.build:287: v4l2loopback.o] Error 1

[You-Sheng Yang (vicamo)]

In v4l2loopback.c:
```
48 #if defined(timer_setup) && defined(from_timer)
49 #define HAVE_TIMER_SETUP
50 #endif
```

`timer_setup()` was first introduced in v4.14-rc3 commit 686fef928bba as a wrapper to `__setup_timer()`. Same for `from_timer()` macro. There is no reason to test both.

[You-Sheng Yang (vicamo)]

Have been resolved by upstream commit https://github.com/v4l2loopback/v4l2loopback/commit/196ae48c0f08dfcdcad0aded4917cf8a303bf237.

[You-Sheng Yang (vicamo)]

Attach debdiff for Questing. Also uploaded to https://launchpad.net/~vicamo/+archive/ubuntu/sru for easier review and verification.

Need sponsoring.

[Launchpad Janitor (janitor)]

This bug was fixed in the package v4l2loopback - 0.15.0-0ubuntu2

---------------
v4l2loopback (0.15.0-0ubuntu2) questing; urgency=medium

  * Failed to build against linux-6.16 (LP: #2114259)
    - 0002-Drop-from_timer-macro-usage.patch

 -- You-Sheng Yang <email address hidden> Mon, 16 Jun 2025 12:12:19 +0800

[You-Sheng Yang (vicamo)]

Nominate for Noble for linux-oem-6.17/noble. Plucky doesn't have linux kernel of v6.16+, so set INVALID.

[Andreas Hasenack (ahasenack)]

I don't see a diff or git branch linked to this bug for noble, and the questing one was sponsored already. Unsubscribing sponsors. When there is something new to sponsor, please resubscribe.