From 6ea50107247cba1ac002418b3bc67189b0b7f59c Mon Sep 17 00:00:00 2001 From: Serge Semin Date: Sat, 2 Dec 2023 14:14:18 +0300 Subject: [PATCH] mips: dmi: Fix early remap on MIPS32 [ Upstream commit 0d0a3748a2cb38f9da1f08d357688ebd982eb788 ] dmi_early_remap() has been defined as ioremap_cache() which on MIPS32 gets to be converted to the VM-based mapping. DMI early remapping is performed at the setup_arch() stage with no VM available. So calling the dmi_early_remap() for MIPS32 causes the system to crash at the early boot time. Fix that by converting dmi_early_remap() to the uncached remapping which is always available on both 32 and 64-bits MIPS systems. Note this change shall not cause any regressions on the current DMI support implementation because on the early boot-up stage neither MIPS32 nor MIPS64 has the cacheable ioremapping support anyway. Fixes: be8fa1cb444c ("MIPS: Add support for Desktop Management Interface (DMI)") Signed-off-by: Serge Semin Signed-off-by: Thomas Bogendoerfer Signed-off-by: Sasha Levin --- arch/mips/include/asm/dmi.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/mips/include/asm/dmi.h b/arch/mips/include/asm/dmi.h index 27415a2..dc397f630 100644 --- a/arch/mips/include/asm/dmi.h +++ b/arch/mips/include/asm/dmi.h @@ -5,7 +5,7 @@ #include #include -#define dmi_early_remap(x, l) ioremap_cache(x, l) +#define dmi_early_remap(x, l) ioremap(x, l) #define dmi_early_unmap(x, l) iounmap(x) #define dmi_remap(x, l) ioremap_cache(x, l) #define dmi_unmap(x) iounmap(x) -- 2.7.4