MIPS: DEC: Do not set up the FPU interrupt if no FPU

Following the arrangement for processors that wire FPU exceptions to the
FPE CPU exception handle the case where no FPU is in use -- which for
DECstation systems will only ever happen when the "nofpu" kernel option
has been used -- do not register the FPU interrupt in such a case
either.

Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/9714/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

diff --git a/arch/mips/dec/setup.c b/arch/mips/dec/setup.c
index b4f83dd22db64043e3cf6c7434d1280a263d6b2d..a0b8943c8f11b9b89bc3c92f3b290c99b309710b 100644 (file)
--- a/arch/mips/dec/setup.c
+++ b/arch/mips/dec/setup.c
@@ -758,7 +758,7 @@ void __init arch_init_irq(void)
                dec_interrupt[DEC_IRQ_HALT] = -1;
 
        /* Register board interrupts: FPU and cascade. */
-       if (dec_interrupt[DEC_IRQ_FPU] >= 0) {
+       if (dec_interrupt[DEC_IRQ_FPU] >= 0 && cpu_has_fpu) {
                struct irq_desc *desc_fpu;
                int irq_fpu;