| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.9 076/102] MIPS: math-emu: do not use bools for arithmetic | Date | Mon, 8 Jul 2019 17:13:09 +0200 |
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[ Upstream commit 8535f2ba0a9b971df62a5890699b9dfe2e0d5580 ]
GCC-7 complains about a boolean value being used with an arithmetic AND:
arch/mips/math-emu/cp1emu.c: In function 'cop1Emulate': arch/mips/math-emu/cp1emu.c:838:14: warning: '~' on a boolean expression [-Wbool-operation] fpr = (x) & ~(cop1_64bit(xcp) == 0); \ ^ arch/mips/math-emu/cp1emu.c:1068:3: note: in expansion of macro 'DITOREG' DITOREG(dval, MIPSInst_RT(ir)); ^~~~~~~ arch/mips/math-emu/cp1emu.c:838:14: note: did you mean to use logical not? fpr = (x) & ~(cop1_64bit(xcp) == 0); \
Since cop1_64bit() returns and int, just flip the LSB.
Suggested-by: Maciej W. Rozycki <macro@imgtec.com> Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com> Reviewed-by: Maciej W. Rozycki <macro@imgtec.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/17058/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Sasha Levin <sashal@kernel.org> --- arch/mips/math-emu/cp1emu.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/mips/math-emu/cp1emu.c b/arch/mips/math-emu/cp1emu.c index 7f2519cfb5d2..15f788601b64 100644 --- a/arch/mips/math-emu/cp1emu.c +++ b/arch/mips/math-emu/cp1emu.c @@ -828,12 +828,12 @@ do { \ } while (0) #define DIFROMREG(di, x) \ - ((di) = get_fpr64(&ctx->fpr[(x) & ~(cop1_64bit(xcp) == 0)], 0)) + ((di) = get_fpr64(&ctx->fpr[(x) & ~(cop1_64bit(xcp) ^ 1)], 0)) #define DITOREG(di, x) \ do { \ unsigned fpr, i; \ - fpr = (x) & ~(cop1_64bit(xcp) == 0); \ + fpr = (x) & ~(cop1_64bit(xcp) ^ 1); \ set_fpr64(&ctx->fpr[fpr], 0, di); \ for (i = 1; i < ARRAY_SIZE(ctx->fpr[x].val64); i++) \ set_fpr64(&ctx->fpr[fpr], i, 0); \ -- 2.20.1
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