ARM: imx6: disable the GIC CPU interface before calling stby-poweroff sequence

stable inclusion
from stable-5.10.73
commit cb8880680bdfde95aa4836807d81400f0a449117
bugzilla: 182983 https://gitee.com/openeuler/kernel/issues/I4I3M0

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=cb8880680bdfde95aa4836807d81400f0a449117

--------------------------------

[ Upstream commit 783f3db0 ]

Any pending interrupt can prevent entering standby based power off state.
To avoid it, disable the GIC CPU interface.

Fixes: 8148d213 ("ARM: imx6: register pm_power_off handler if "fsl,pmic-stby-poweroff" is set")
Signed-off-by: NOleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: NShawn Guo <shawnguo@kernel.org>
Signed-off-by: NSasha Levin <sashal@kernel.org>
Signed-off-by: NChen Jun <chenjun102@huawei.com>
Acked-by: NWeilong Chen <chenweilong@huawei.com>
Signed-off-by: NChen Jun <chenjun102@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

arch/arm/mach-imx/pm-imx6.c

@@ -9,6 +9,7 @@
 #include <linux/io.h>
 #include <linux/irq.h>
 #include <linux/genalloc.h>
+#include <linux/irqchip/arm-gic.h>
 #include <linux/mfd/syscon.h>
 #include <linux/mfd/syscon/imx6q-iomuxc-gpr.h>
 #include <linux/of.h>
@@ -618,6 +619,7 @@ static void __init imx6_pm_common_init(const struct imx6_pm_socdata
 
 static void imx6_pm_stby_poweroff(void)
 {
+	gic_cpu_if_down(0);
 	imx6_set_lpm(STOP_POWER_OFF);
 	imx6q_suspend_finish(0);