From: Ivan T. Ivanov Date: Tue, 16 Nov 2021 08:46:16 +0000 (+0200) Subject: ARM: rockchip: Use memcpy_toio instead of memcpy on smp bring-up X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=423e85e97aaf69e5198bbec6811e3825c8b5019a;p=linux.git 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 Link: https://lore.kernel.org/r/20211116084616.24811-1-iivanov@suse.de Signed-off-by: Heiko Stuebner --- diff --git a/arch/arm/mach-rockchip/platsmp.c b/arch/arm/mach-rockchip/platsmp.c index d60856898d97a..5ec58d004b7de 100644 --- 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);