Messages in this thread Patch in this message | | | From | xiongxin <> | Subject | [PATCH] PM / s2idle: Fix the failure of specifying "mem_sleep_default=" parameter | Date | Fri, 9 Jul 2021 08:32:04 +0800 |
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From: xiongxin <xiongxin@kylinos.cn>
On the arm64 platform, the psci driver is used by default to set the suspend_ops structure; but the psci_acpi_init() function is called before the command-line parameter "mem_sleep_default=" is specified; the user cannot set the desired suspend mode through the "mem_sleep_default=" parameter;
In mem_sleep_default_setup(), judge whether suspend_ops is set, if it has been assigned, rewrite the value of mem_sleep_current variable; in order to complete the user setting;
Signed-off-by: xiongxin <xiongxin@kylinos.cn>
diff --git a/kernel/power/suspend.c b/kernel/power/suspend.c index d8cae434f9eb..bef4b17de3f6 100644 --- a/kernel/power/suspend.c +++ b/kernel/power/suspend.c @@ -192,6 +192,21 @@ static int __init mem_sleep_default_setup(char *str) break; } + /* + * When the suspend_ops has been set, "mem_sleep_default=*" will + * be invalid, here to fix this situation. + */ + if (suspend_ops) { + if (mem_sleep_default == PM_SUSPEND_TO_IDLE) + mem_sleep_current = PM_SUSPEND_TO_IDLE; + else if ((mem_sleep_default == PM_SUSPEND_STANDBY) && + valid_state(PM_SUSPEND_STANDBY)) + mem_sleep_current = PM_SUSPEND_STANDBY; + else if ((mem_sleep_default >= PM_SUSPEND_MEM) && + valid_state(PM_SUSPEND_MEM)) + mem_sleep_current = PM_SUSPEND_MEM; + } + return 1; } __setup("mem_sleep_default=", mem_sleep_default_setup); -- 2.25.1
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