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Pengpeng Hou
5930665a17
Timer callbacks can request that an expired event be restarted. Such
events are moved to a local restart_list, but the restart loop tests that
list while reading its first entry from tstate->event_list.
If the main event list is empty, the loop treats its list head as a timer
event. Otherwise it repeatedly removes and reinserts the wrong event
while restart_list remains nonempty, so timer processing cannot
complete.
No in-tree callback currently requests a restart, but the timer-event
callback interface exposes this path to OpenSBI library and platform
users.
Read the event from restart_list, matching the loop condition and the
list that owns the entry.
Fixes: b7fa8a246c ("lib: sbi_timer: Add support for timer events")
Signed-off-by: Pengpeng Hou <pengpeng@iscas.ac.cn>
Reviewed-by: Anup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/r/20260831130641.54100-1-pengpeng@iscas.ac.cn
Signed-off-by: Anup Patel <anup@brainfault.org>