The patch below does not apply to the 4.19-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 stable@vger.kernel.org.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From 424c3781dd1cb401857585331eaaa425a13f2429 Mon Sep 17 00:00:00 2001 From: "Maciej W. Rozycki" macro@orcam.me.uk Date: Sun, 1 May 2022 23:14:16 +0100 Subject: [PATCH] MIPS: IP27: Remove incorrect `cpu_has_fpu' override
Remove unsupported forcing of `cpu_has_fpu' to 1, which makes the `nofpu' kernel parameter non-functional, and also causes a link error:
ld: arch/mips/kernel/traps.o: in function `trap_init': ./arch/mips/include/asm/msa.h:(.init.text+0x348): undefined reference to `handle_fpe' ld: ./arch/mips/include/asm/msa.h:(.init.text+0x354): undefined reference to `handle_fpe' ld: ./arch/mips/include/asm/msa.h:(.init.text+0x360): undefined reference to `handle_fpe'
where the CONFIG_MIPS_FP_SUPPORT configuration option has been disabled.
Signed-off-by: Maciej W. Rozycki macro@orcam.me.uk Reported-by: Stephen Zhang starzhangzsd@gmail.com Fixes: 0ebb2f4159af ("MIPS: IP27: Update/restructure CPU overrides") Cc: stable@vger.kernel.org # v4.2+ Signed-off-by: Thomas Bogendoerfer tsbogend@alpha.franken.de
diff --git a/arch/mips/include/asm/mach-ip27/cpu-feature-overrides.h b/arch/mips/include/asm/mach-ip27/cpu-feature-overrides.h index c8385c4e8664..568fe09332eb 100644 --- a/arch/mips/include/asm/mach-ip27/cpu-feature-overrides.h +++ b/arch/mips/include/asm/mach-ip27/cpu-feature-overrides.h @@ -25,7 +25,6 @@ #define cpu_has_4kex 1 #define cpu_has_3k_cache 0 #define cpu_has_4k_cache 1 -#define cpu_has_fpu 1 #define cpu_has_nofpuex 0 #define cpu_has_32fpr 1 #define cpu_has_counter 1