MIPS: DSP: eleminate used_dsp.

    
used_dsp was meant to be used like used_math - but since the FPU context
is small and lazy context switching is a stupid idea on multiprocessors
this idea only got halfway implemented and those bits are were now
breaking ptrace.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

3 files changed, 4 insertions, 13 deletions

diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c
index 510da5fda567..8d2549335304 100644
--- a/arch/mips/kernel/ptrace.c
+++ b/arch/mips/kernel/ptrace.c
@@ -280,12 +280,8 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                                 ret = -EIO;
                                 goto out;
                         }
-                        if (child->thread.dsp.used_dsp) {
-                                dregs = __get_dsp_regs(child);
-                                tmp = (unsigned long) (dregs[addr - DSP_BASE]);
-                        } else {
-                                tmp = -1;       /* DSP registers yet used  */
-                        }
+                        dregs = __get_dsp_regs(child);
+                        tmp = (unsigned long) (dregs[addr - DSP_BASE]);
                         break;
                 }
                 case DSP_CONTROL:
diff --git a/arch/mips/kernel/ptrace32.c b/arch/mips/kernel/ptrace32.c
index 7e55457a491f..1f998bfde165 100644
--- a/arch/mips/kernel/ptrace32.c
+++ b/arch/mips/kernel/ptrace32.c
@@ -201,12 +201,8 @@ asmlinkage int sys32_ptrace(int request, int pid, int addr, int data)
                                 ret = -EIO;
                                 goto out_tsk;
                         }
-                        if (child->thread.dsp.used_dsp) {
-                                dspreg_t *dregs = __get_dsp_regs(child);
-                                tmp = (unsigned long) (dregs[addr - DSP_BASE]);
-                        } else {
-                                tmp = -1;       /* DSP registers yet used  */
-                        }
+                        dspreg_t *dregs = __get_dsp_regs(child);
+                        tmp = (unsigned long) (dregs[addr - DSP_BASE]);
                         break;
                 case DSP_CONTROL:
                         if (!cpu_has_dsp) {
diff --git a/include/asm-mips/processor.h b/include/asm-mips/processor.h
index f1980c6c3bcc..de53055a62ae 100644
--- a/include/asm-mips/processor.h
+++ b/include/asm-mips/processor.h
@@ -103,7 +103,6 @@ typedef __u32 dspreg_t;
 struct mips_dsp_state {
         dspreg_t        dspr[NUM_DSP_REGS];
         unsigned int    dspcontrol;
-        unsigned short  used_dsp;
 };
 
 #define INIT_DSP {{0,},}