From: Greg Ungerer Date: Thu, 25 Aug 2016 13:12:22 +0000 (+1000) Subject: m68k: report correct FPU type on ColdFire MMU platforms X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=cbd5b982f6a1540ebb0144774d64381e7b2d39fd;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git m68k: report correct FPU type on ColdFire MMU platforms Not all ColdFire SoC parts that have an MMU also have an FPU - so set an FPU type (via m68k_fputype) appropriate for the configured platform. With this set correctly /proc/cpuinfo will report FPU "none" on devices that don't have one. And kernel code paths that initialize FPU hardware will now only execute if an FPU is actually present. Signed-off-by: Greg Ungerer --- diff --git a/arch/m68k/coldfire/head.S b/arch/m68k/coldfire/head.S index 4ba5d5628067..bdb472c48401 100644 --- a/arch/m68k/coldfire/head.S +++ b/arch/m68k/coldfire/head.S @@ -280,8 +280,8 @@ _clear_bss: movel %d0,m68k_cputype /* Mark us as a ColdFire */ movel #MMU_COLDFIRE,%d0 movel %d0,m68k_mmutype - movel #FPU_COLDFIRE,%d0 - movel %d0,m68k_fputype + movel #FPUTYPE,%d0 + movel %d0,m68k_fputype /* Mark FPU type */ movel #MACHINE,%d0 movel %d0,m68k_machtype /* Mark machine type */ lea init_task,%a2 /* Set "current" init task */ diff --git a/arch/m68k/include/asm/m5441xsim.h b/arch/m68k/include/asm/m5441xsim.h index 60768b5973db..4279c0df0844 100644 --- a/arch/m68k/include/asm/m5441xsim.h +++ b/arch/m68k/include/asm/m5441xsim.h @@ -11,6 +11,7 @@ #define CPU_INSTR_PER_JIFFY 2 #define MCF_BUSCLK (MCF_CLK / 2) #define MACHINE MACH_M5441X +#define FPUTYPE 0 #include diff --git a/arch/m68k/include/asm/m54xxsim.h b/arch/m68k/include/asm/m54xxsim.h index cde03902da24..7dd6cc4bcd72 100644 --- a/arch/m68k/include/asm/m54xxsim.h +++ b/arch/m68k/include/asm/m54xxsim.h @@ -9,6 +9,7 @@ #define CPU_INSTR_PER_JIFFY 2 #define MCF_BUSCLK (MCF_CLK / 2) #define MACHINE MACH_M54XX +#define FPUTYPE FPU_COLDFIRE #include