[PATCH 4.0 25/72] MIPS: smp-cps: cpu_set FPU mask if FPU present

From: Greg Kroah-Hartman
Date: Mon May 11 2015 - 15:03:49 EST

4.0-stable review patch. If anyone has any objections, please let me know.


From: Niklas Cassel <niklas.cassel@xxxxxxxx>

Commit 90db024f140d0d6ad960cc5f090e3c8ed890ca55 upstream.

If we have an FPU, enroll ourselves in the FPU-full mask.
Matching the MT_SMP and CMP implementations of smp_setup.

Signed-off-by: Niklas Cassel <niklass@xxxxxxxx>
Cc: paul.burton@xxxxxxxxxx
Cc: linux-mips@xxxxxxxxxxxxxx
Patchwork: https://patchwork.linux-mips.org/patch/8948/
Signed-off-by: Ralf Baechle <ralf@xxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
arch/mips/kernel/smp-cps.c | 6 ++++++
1 file changed, 6 insertions(+)

--- a/arch/mips/kernel/smp-cps.c
+++ b/arch/mips/kernel/smp-cps.c
@@ -88,6 +88,12 @@ static void __init cps_smp_setup(void)

/* Make core 0 coherent with everything */
+ /* If we have an FPU, enroll ourselves in the FPU-full mask */
+ if (cpu_has_fpu)
+ cpu_set(0, mt_fpu_cpumask);
+#endif /* CONFIG_MIPS_MT_FPAFF */

static void __init cps_prepare_cpus(unsigned int max_cpus)

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