Merge tag 'sound-5.14-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai...

[linux-2.6-microblaze.git] / arch / arc / kernel / fpu.c

diff --git a/arch/arc/kernel/fpu.c b/arch/arc/kernel/fpu.c
index c67c0f0..ec64021 100644 (file)
--- a/arch/arc/kernel/fpu.c
+++ b/arch/arc/kernel/fpu.c
@@ -57,23 +57,26 @@ void fpu_save_restore(struct task_struct *prev, struct task_struct *next)
 
 void fpu_init_task(struct pt_regs *regs)
 {
+       const unsigned int fwe = 0x80000000;
+
        /* default rounding mode */
        write_aux_reg(ARC_REG_FPU_CTRL, 0x100);
 
-       /* set "Write enable" to allow explicit write to exception flags */
-       write_aux_reg(ARC_REG_FPU_STATUS, 0x80000000);
+       /* Initialize to zero: setting requires FWE be set */
+       write_aux_reg(ARC_REG_FPU_STATUS, fwe);
 }
 
 void fpu_save_restore(struct task_struct *prev, struct task_struct *next)
 {
        struct arc_fpu *save = &prev->thread.fpu;
        struct arc_fpu *restore = &next->thread.fpu;
+       const unsigned int fwe = 0x80000000;
 
        save->ctrl = read_aux_reg(ARC_REG_FPU_CTRL);
        save->status = read_aux_reg(ARC_REG_FPU_STATUS);
 
        write_aux_reg(ARC_REG_FPU_CTRL, restore->ctrl);
-       write_aux_reg(ARC_REG_FPU_STATUS, restore->status);
+       write_aux_reg(ARC_REG_FPU_STATUS, (fwe | restore->status));
 }
 
 #endif