Johannes Berg 6c91b8729a rfkill: make new event layout opt-in ... commit 54f586a915 upstream. Again new complaints surfaced that we had broken the ABI here, although previously all the userspace tools had agreed that it was their mistake and fixed it. Yet now there are cases (e.g. RHEL) that want to run old userspace with newer kernels, and thus are broken. Since this is a bit of a whack-a-mole thing, change the whole extensibility scheme of rfkill to no longer just rely on the message lengths, but instead require userspace to opt in via a new ioctl to a given maximum event size that it is willing to understand. By default, set that to RFKILL_EVENT_SIZE_V1 (8), so that the behaviour for userspace not calling the ioctl will look as if it's just running on an older kernel. Fixes: 14486c8261 ("rfkill: add a reason to the HW rfkill state") Cc: stable@vger.kernel.org # 5.11+ Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Kalle Valo <kvalo@kernel.org> Link: https://lore.kernel.org/r/20220316212749.16491491b270.Ifcb1950998330a596f29a2a162e00b7546a1d6d0@changeid Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2022-04-08 13:57:27 +02:00
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acpi	…
asm-generic	…
clocksource	…
crypto	lib/crypto: blake2s: avoid indirect calls to compression function for Clang CFI	2022-02-04 19:22:32 +01:00
drm	…
dt-bindings	Fixes for omaps	2022-02-07 17:42:44 +01:00
keys	…
kunit	…
kvm	…
linux	fbdev: Hot-unplug firmware fb devices on forced removal	2022-04-08 13:57:26 +02:00
math-emu	…
media	…
memory	…
misc	…
net	Bluetooth: hci_sync: Add a new quirk to skip HCI_FLT_CLEAR_ALL	2022-03-28 10:03:20 +02:00
pcmcia	…
ras	…
rdma	…
scsi	scsi: core: sd: Add silence_suspend flag to suppress some PM messages	2022-04-08 13:57:20 +02:00
soc	soc: fsl: Replace kernel.h with the necessary inclusions	2022-02-18 17:11:17 -06:00
sound	ALSA: pcm: Fix potential AB/BA lock with buffer_mutex and mmap_lock	2022-04-08 13:57:21 +02:00
target	…
trace	ext4: fix ext4_fc_stats trace point	2022-04-08 13:57:25 +02:00
uapi	rfkill: make new event layout opt-in	2022-04-08 13:57:27 +02:00
vdso	…
video	…
xen	xen/gnttab: fix gnttab_end_foreign_access() without page specified	2022-03-07 09:48:55 +01:00