[PATCH AUTOSEL 4.14 1/9] ARM: rockchip: Use memcpy_toio instead of memcpy on smp bring-up
From: Sasha Levin <sashal@kernel.org>
Date: 2021-12-21 02:04:24
Also in:
linux-rockchip, lkml, stable
Subsystem:
arm port, arm/rockchip soc support, the rest · Maintainers:
Russell King, Heiko Stuebner, Linus Torvalds
From: "Ivan T. Ivanov" <redacted> [ Upstream commit 423e85e97aaf69e5198bbec6811e3825c8b5019a ] 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 <redacted> Link: https://lore.kernel.org/r/20211116084616.24811-1-iivanov@suse.de (local) Signed-off-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Sasha Levin <sashal@kernel.org> --- arch/arm/mach-rockchip/platsmp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/mach-rockchip/platsmp.c b/arch/arm/mach-rockchip/platsmp.c
index ecec340ca3457..bb69e6e6defe8 100644
--- a/arch/arm/mach-rockchip/platsmp.c
+++ b/arch/arm/mach-rockchip/platsmp.c@@ -198,7 +198,7 @@ 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);
--
2.34.1
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