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authorJames Hogan <james.hogan@imgtec.com>2016-06-09 13:13:04 +0100
committerRalf Baechle <ralf@linux-mips.org>2016-07-24 12:45:00 +0200
commite9cbf6299e306d6f2ff7b8fe7ac66059191b182f (patch)
tree1a7e6a638abfd2e80281817b3a84c0e3752c218a
parent7bf0d5e8e643a05de2cca699ac29903b19010cc1 (diff)
downloadlinux-e9cbf6299e306d6f2ff7b8fe7ac66059191b182f.tar.bz2
MIPS: Fix MSA asm warnings in control reg accessors
Building an MSA capable kernel with a toolchain that supports MSA produces warnings such as this: CC arch/mips/kernel/cpu-probe.o {standard input}: Assembler messages: {standard input}:4786: Warning: the `msa' extension requires 64-bit FPRs This is due to ".set msa" without ".set fp=64" in the inline assembly of control register accessors, since MSA requires the 64-bit FPU registers (FR=1). Add the missing fp=64 in these functions to silence the warnings. Signed-off-by: James Hogan <james.hogan@imgtec.com> Cc: Paul Burton <paul.burton@imgtec.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/13554/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
-rw-r--r--arch/mips/include/asm/msa.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/mips/include/asm/msa.h b/arch/mips/include/asm/msa.h
index ddf496cb2a2a..8967b475ab10 100644
--- a/arch/mips/include/asm/msa.h
+++ b/arch/mips/include/asm/msa.h
@@ -168,6 +168,7 @@ static inline unsigned int read_msa_##name(void) \
unsigned int reg; \
__asm__ __volatile__( \
" .set push\n" \
+ " .set fp=64\n" \
" .set msa\n" \
" cfcmsa %0, $" #cs "\n" \
" .set pop\n" \
@@ -179,6 +180,7 @@ static inline void write_msa_##name(unsigned int val) \
{ \
__asm__ __volatile__( \
" .set push\n" \
+ " .set fp=64\n" \
" .set msa\n" \
" ctcmsa $" #cs ", %0\n" \
" .set pop\n" \