Danish Khateeb 5b864f8db0 pps: generators: wake up PPS_GEN_FETCHEVENT readers on unregister ...

A reader sleeping in PPS_GEN_FETCHEVENT waits for the next event, but
no event comes after pps_gen_unregister_source(), so the reader sleeps
until it gets a signal. A PPS_GEN_FETCHEVENT issued after the
unregister sleeps the same way.

Wake up the readers on unregister, and make PPS_GEN_FETCHEVENT fail
with -ENODEV once the generator is gone, like the other ioctls. The
wait checks info without info_lock, so clear it with WRITE_ONCE().

Fixes: 86b525bed2 ("drivers pps: add PPS generators support")
Suggested-by: Rodolfo Giometti <giometti@enneenne.com>
Assisted-by: LLM
Signed-off-by: Danish Khateeb <danishkhateeb03@gmail.com>
Acked-by: Rodolfo Giometti <giometti@enneenne.com>
Link: https://patch.msgid.link/20260929124937.51114-5-danishkhateeb03@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2026-10-01 15:45:00 +02:00

..

Kconfig

pps: generators: remove broken pps_gen_parport driver

2026-01-27 15:54:27 +01:00

Makefile

pps: generators: remove broken pps_gen_parport driver

2026-01-27 15:54:27 +01:00

pps_gen_tio.c

Replace <linux/mod_devicetable.h> by more specific <linux/device-id/*.h> (c files)

2026-07-03 07:38:17 +02:00

pps_gen-dummy.c

pps: generators: Use ktime_get_real_ts64() instead of ktime_get_snapshot()

2026-06-02 11:39:58 +02:00

pps_gen.c

pps: generators: wake up PPS_GEN_FETCHEVENT readers on unregister

2026-10-01 15:45:00 +02:00

sysfs.c

pps: generators: replace copy of pps-gen info struct with const pointer

2025-02-21 10:46:49 +01:00