ARM: rockchip: Use memcpy_toio instead of memcpy on smp bring-up

This fixes a potential kernel panic on memcpy when FORTIFY_SOURCE
is enabled. Because memory is iomem use appropriate function for
accessing it.

Signed-off-by: Ivan T. Ivanov <iivanov@suse.de>
Link: https://lore.kernel.org/r/20211116084616.24811-1-iivanov@suse.de
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

diff --git a/arch/arm/mach-rockchip/platsmp.c b/arch/arm/mach-rockchip/platsmp.c
index d60856898d97acaa51912e6097a5d968200b45bd..5ec58d004b7de85793fbbe9a01febf7dd0e399f6 100644 (file)
--- a/arch/arm/mach-rockchip/platsmp.c
+++ b/arch/arm/mach-rockchip/platsmp.c
@@ -189,7 +189,7 @@ static int __init rockchip_smp_prepare_sram(struct device_node *node)
        rockchip_boot_fn = __pa_symbol(secondary_startup);
 
        /* copy the trampoline to sram, that runs during startup of the core */
-       memcpy(sram_base_addr, &rockchip_secondary_trampoline, trampoline_sz);
+       memcpy_toio(sram_base_addr, &rockchip_secondary_trampoline, trampoline_sz);
        flush_cache_all();
        outer_clean_range(0, trampoline_sz);