FAILED: patch "[PATCH] ARM: imx: provide v7_cpu_resume() only on ARM_CPU_SUSPEND=y" failed to apply to 4.9-stable tree

The patch below does not apply to the 4.9-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From 3100423dc133c25679dbaa1099404651b8ae3af9 Mon Sep 17 00:00:00 2001
From: Ahmad Fatoum <[email protected]>
Date: Mon, 23 Mar 2020 09:19:33 +0100
Subject: [PATCH] ARM: imx: provide v7_cpu_resume() only on ARM_CPU_SUSPEND=y

512a928affd5 ("ARM: imx: build v7_cpu_resume() unconditionally") introduced an unintended linker error for i.MX6 configurations that have ARM_CPU_SUSPEND=n which can happen if neither CONFIG_PM, CONFIG_CPU_IDLE, nor ARM_PSCI_FW are selected.

Fix this by having v7_cpu_resume() compiled only when cpu_resume() it calls is available as well.

The C declaration for the function remains unguarded to avoid future code inadvertently using a stub and introducing a regression to the bug the original commit fixed.

index 03506ce46149..e7364e6c8c6b 100644
@@ -91,8 +91,10 @@ AFLAGS_suspend-imx6.o :=-Wa,-march=armv7-a
 obj-$(CONFIG_SOC_IMX6) += suspend-imx6.o
 obj-$(CONFIG_SOC_IMX53) += suspend-imx53.o
 endif
+ifeq ($(CONFIG_ARM_CPU_SUSPEND),y)
 AFLAGS_resume-imx6.o :=-Wa,-march=armv7-a
 obj-$(CONFIG_SOC_IMX6) += resume-imx6.o
+endif
 obj-$(CONFIG_SOC_IMX6) += pm-imx6.o
 
 obj-$(CONFIG_SOC_IMX1) += mach-imx1.o