5.15-stable review patch. If anyone has any objections, please let me know.
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From: Greg Kroah-Hartman gregkh@linuxfoundation.org
This reverts commit 77011a1d7a1a973d1657d06b658ce20f94172827 which is commit 4e7ca0b57f3bc09ba3e4ab86bf6b7c35134bfd04 upstream.
Turns out to break the 5.15.y build, it should not have been backported that far.
Reported-by: Guenter Roeck linux@roeck-us.net Cc: Jiaxun Yang jiaxun.yang@flygoat.com Cc: Thomas Bogendoerfer tsbogend@alpha.franken.de Link: https://lore.kernel.org/r/135ef4fd-4fc9-40b4-b188-8e64946f47c4@roeck-us.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/mips/loongson64/reset.c | 38 ++++++++++++++++++++++---------------- 1 file changed, 22 insertions(+), 16 deletions(-)
--- a/arch/mips/loongson64/reset.c +++ b/arch/mips/loongson64/reset.c @@ -11,7 +11,6 @@ #include <linux/init.h> #include <linux/kexec.h> #include <linux/pm.h> -#include <linux/reboot.h> #include <linux/slab.h>
#include <asm/bootinfo.h> @@ -22,21 +21,36 @@ #include <loongson.h> #include <boot_param.h>
-static int firmware_restart(struct sys_off_data *unusedd) +static void loongson_restart(char *command) {
void (*fw_restart)(void) = (void *)loongson_sysconf.restart_addr;
fw_restart(); - return NOTIFY_DONE; + while (1) { + if (cpu_wait) + cpu_wait(); + } }
-static int firmware_poweroff(struct sys_off_data *unused) +static void loongson_poweroff(void) { void (*fw_poweroff)(void) = (void *)loongson_sysconf.poweroff_addr;
fw_poweroff(); - return NOTIFY_DONE; + while (1) { + if (cpu_wait) + cpu_wait(); + } +} + +static void loongson_halt(void) +{ + pr_notice("\n\n** You can safely turn off the power now **\n\n"); + while (1) { + if (cpu_wait) + cpu_wait(); + } }
#ifdef CONFIG_KEXEC @@ -140,17 +154,9 @@ static void loongson_crash_shutdown(stru
static int __init mips_reboot_setup(void) { - if (loongson_sysconf.restart_addr) { - register_sys_off_handler(SYS_OFF_MODE_RESTART, - SYS_OFF_PRIO_FIRMWARE, - firmware_restart, NULL); - } - - if (loongson_sysconf.poweroff_addr) { - register_sys_off_handler(SYS_OFF_MODE_POWER_OFF, - SYS_OFF_PRIO_FIRMWARE, - firmware_poweroff, NULL); - } + _machine_restart = loongson_restart; + _machine_halt = loongson_halt; + pm_power_off = loongson_poweroff;
#ifdef CONFIG_KEXEC kexec_argv = kmalloc(KEXEC_ARGV_SIZE, GFP_KERNEL);