timers: Replace del_timer_sync() with timer_delete_sync() for Linux >= 6.1.84

[horseface1110]

To align with the changes introduced in Linux kernel version 6.15, this commit replaces the deprecated del_timer_sync() with timer_delete_sync(), which now serves as its functional replacement. The function parameters remain unchanged, making this a direct drop-in fix.

ref:
torvalds/linux@9b13df3

[jychen0611]

Since v6.1.84, del_timer_sync() has been redefined as a wrapper for timer_delete_sync(), which is defined in timer.h.

6.1.84 is where the rename happened, not 6.15.0. So checking for 6.15 is too conservative.
Avoiding the wrapper (even if present) is good practice in new code.

You should also modify your commit message description.
e.g.

The "del_timer_sync()" function was renamed to "timer_delete_sync()" in kernel 6.1.84
as part of a naming consistency cleanup. The old function remains as a wrapper for
backward compatibility but is discouraged for use in new code.

Update the version check to use 6.1.84 instead of 6.15.0, so that newer kernels call
"timer_delete_sync()" directly and avoid relying on the deprecated wrapper.

ref:

bootlin

commit 8fa7292fee5c5240402371ea89ab285ec856c916
Author: Thomas Gleixner [email protected]
Date: Sat Apr 5 10:17:26 2025 +0200

treewide: Switch/rename to timer_delete[_sync]()

timer_delete[_sync]() replaces del_timer[_sync](). Convert the whole tree
over and remove the historical wrapper inlines.

Conversion was done with coccinelle plus manual fixups where necessary.

Signed-off-by: Thomas Gleixner <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>

commit 9b13df3fb64ee95e2397585404e442afee2c7d4f
Author: Thomas Gleixner [email protected]
Date: Wed Nov 23 21:18:44 2022 +0100

timers: Rename del_timer_sync() to timer_delete_sync()

The timer related functions do not have a strict timer_ prefixed namespace
which is really annoying.

Rename del_timer_sync() to timer_delete_sync() and provide del_timer_sync()
as a wrapper. Document that del_timer_sync() is not for new code.

Signed-off-by: Thomas Gleixner <[email protected]>
Tested-by: Guenter Roeck <[email protected]>
Reviewed-by: Steven Rostedt (Google) <[email protected]>
Reviewed-by: Jacob Keller <[email protected]>
Reviewed-by: Anna-Maria Behnsen <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

[horseface1110]

Thanks @jychen0611 for the suggestion. Version check has been updated to KERNEL_VERSION(6, 1, 84) and the commit message rewritten accordingly. Please take another look!

[jserv]

Thanks @jychen0611 for the suggestion. Version check has been updated to KERNEL_VERSION(6, 1, 84) and the commit message rewritten accordingly. Please take another look!

Change the subject of this pull request as well.

[jserv]

Rebase the latest main branch and refine the subject.

[jserv]

Refine git commit messages.