James Morse 6ded0b61cf firmware: arm_sdei: fix double-lock on hibernate with shared events ... SDEI has private events that must be registered on each CPU. When CPUs come and go they must re-register and re-enable their private events. Each event has flags to indicate whether this should happen to protect against an event being registered on a CPU coming online, while all the others are unregistering the event. These flags are protected by the sdei_list_lock spinlock, because the cpuhp callbacks can't take the mutex. Hibernate needs to unregister all events, but keep the in-memory re-register and re-enable as they are. sdei_unregister_shared() takes the spinlock to walk the list, then calls _sdei_event_unregister() on each shared event. _sdei_event_unregister() tries to take the same spinlock to update re-register and re-enable. This doesn't go so well. Push the re-register and re-enable updates out to their callers. sdei_unregister_shared() doesn't want these values updated, so doesn't need to do anything. This also fixes shared events getting lost over hibernate as this path made them look unregistered. Fixes: da35182724 ("firmware: arm_sdei: Add support for CPU and system power states") Reported-by: Liguang Zhang <zhangliguang@linux.alibaba.com> Signed-off-by: James Morse <james.morse@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>		2020-02-27 17:14:12 +00:00
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arm_scmi
broadcom
efi	arm64: mm: convert mm/dump.c to use walk_page_range()	2020-02-04 03:05:25 +00:00
google
imx
meson
psci
tegra
xilinx	ARM: SoC-related driver updates	2020-02-08 14:04:19 -08:00
arm_scpi.c
arm_sdei.c	firmware: arm_sdei: fix double-lock on hibernate with shared events	2020-02-27 17:14:12 +00:00
dmi_scan.c
dmi-id.c
dmi-sysfs.c
edd.c
iscsi_ibft_find.c
iscsi_ibft.c
Kconfig
Makefile
memmap.c
pcdp.c
pcdp.h
qcom_scm-legacy.c
qcom_scm-smc.c
qcom_scm.c
qcom_scm.h
qemu_fw_cfg.c
raspberrypi.c
scpi_pm_domain.c
stratix10-rsu.c
stratix10-svc.c
ti_sci.c
ti_sci.h
trusted_foundations.c
turris-mox-rwtm.c