Vlastimil Babka df2f7cde73 PM: hibernate: fix resume_store() return value when hibernation not available ... On a laptop with hibernation set up but not actively used, and with secure boot and lockdown enabled kernel, 6.5-rc1 gets stuck on boot with the following repeated messages: A start job is running for Resume from hibernation using device /dev/system/swap (24s / no limit) lockdown_is_locked_down: 25311154 callbacks suppressed Lockdown: systemd-hiberna: hibernation is restricted; see man kernel_lockdown.7 ... Checking the resume code leads to commit cc89c63e2f ("PM: hibernate: move finding the resume device out of software_resume") which inadvertently changed the return value from resume_store() to 0 when !hibernation_available(). This apparently translates to userspace write() returning 0 as in number of bytes written, and userspace looping indefinitely in the attempt to write the intended value. Fix this by returning the full number of bytes that were to be written, as that's what was done before the commit. Fixes: cc89c63e2f ("PM: hibernate: move finding the resume device out of software_resume") Signed-off-by: Vlastimil Babka <vbabka@suse.cz> Reviewed-by: Christoph Hellwig <hch@lst.de> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>		2023-08-07 11:41:11 +02:00
..
autosleep.c	PM: sleep: fix typos in comments	2021-04-08 19:37:21 +02:00
console.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
energy_model.c	PM: EM: fix memory leak with using debugfs_lookup()	2023-02-09 20:36:10 +01:00
hibernate.c	PM: hibernate: fix resume_store() return value when hibernation not available	2023-08-07 11:41:11 +02:00
Kconfig	PM: sleep: Remove "select SRCU"	2023-01-20 17:53:07 +01:00
main.c	- Yosry Ahmed brought back some cgroup v1 stats in OOM logs.	2023-06-28 10:28:11 -07:00
Makefile	PM: sleep: Narrow down -DDEBUG on kernel/power/ files	2022-04-13 16:34:01 +02:00
power.h	- Yosry Ahmed brought back some cgroup v1 stats in OOM logs.	2023-06-28 10:28:11 -07:00
poweroff.c	kernel/power: constify sysrq_key_op	2020-05-15 14:53:20 +02:00
process.c	workqueue: Introduce show_freezable_workqueues	2023-03-23 15:55:38 -10:00
qos.c	PM: QoS: Restore support for default value on frequency QoS	2023-07-11 20:09:57 +02:00
snapshot.c	- Yosry Ahmed brought back some cgroup v1 stats in OOM logs.	2023-06-28 10:28:11 -07:00
suspend_test.c	PM: suspend: fix return value of __setup handler	2022-03-01 18:55:07 +01:00
suspend.c	Scheduler changes for v6.1:	2022-10-10 09:10:28 -07:00
swap.c	block: replace fmode_t with a block-specific type for block open flags	2023-06-12 08:04:05 -06:00
user.c	freezer: Have {,un}lock_system_sleep() save/restore flags	2022-09-07 21:53:48 +02:00
wakelock.c	PM: wakeup: simplify the output logic of pm_show_wakelocks()	2022-01-25 18:27:02 +01:00