From: Huacai Chen <chenhc@xxxxxxxxxx> In _restore_fp_context/_restore_fp_context32, t0 is used for both CP0_Status and CP1_FCSR. This is a mistake and cause FP exeception on boot, so fix it. Signed-off-by: Huacai Chen <chenhc@xxxxxxxxxx> Tested-by: Aaro Koskinen <aaro.koskinen@xxxxxx> Tested-by: Andreas Barth <aba@xxxxxxxxx> Signed-off-by: Aaro Koskinen <aaro.koskinen@xxxxxx> --- arch/mips/kernel/r4k_fpu.S | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/mips/kernel/r4k_fpu.S b/arch/mips/kernel/r4k_fpu.S index 841ffc2..73b0ddf 100644 --- a/arch/mips/kernel/r4k_fpu.S +++ b/arch/mips/kernel/r4k_fpu.S @@ -146,7 +146,7 @@ LEAF(_save_fp_context32) * - cp1 status/control register */ LEAF(_restore_fp_context) - EX lw t0, SC_FPC_CSR(a0) + EX lw t1, SC_FPC_CSR(a0) #if defined(CONFIG_64BIT) || defined(CONFIG_CPU_MIPS32_R2) .set push @@ -191,7 +191,7 @@ LEAF(_restore_fp_context) EX ldc1 $f26, SC_FPREGS+208(a0) EX ldc1 $f28, SC_FPREGS+224(a0) EX ldc1 $f30, SC_FPREGS+240(a0) - ctc1 t0, fcr31 + ctc1 t1, fcr31 jr ra li v0, 0 # success END(_restore_fp_context) @@ -199,7 +199,7 @@ LEAF(_restore_fp_context) #ifdef CONFIG_MIPS32_COMPAT LEAF(_restore_fp_context32) /* Restore an o32 sigcontext. */ - EX lw t0, SC32_FPC_CSR(a0) + EX lw t1, SC32_FPC_CSR(a0) mfc0 t0, CP0_STATUS sll t0, t0, 5 @@ -239,7 +239,7 @@ LEAF(_restore_fp_context32) EX ldc1 $f26, SC32_FPREGS+208(a0) EX ldc1 $f28, SC32_FPREGS+224(a0) EX ldc1 $f30, SC32_FPREGS+240(a0) - ctc1 t0, fcr31 + ctc1 t1, fcr31 jr ra li v0, 0 # success END(_restore_fp_context32) -- 1.9.0
