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MIPS: DSP: eleminate used_dsp.

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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>
This commit is contained in:
Ralf Baechle 2005-12-05 13:47:25 +00:00 committed by
parent da2c9ed55b
commit 6c35585273
3 changed files with 4 additions and 13 deletions
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8
arch/mips/kernel/ptrace.c
View File

@ -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:

8
arch/mips/kernel/ptrace32.c
View File

@ -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) {

1
include/asm-mips/processor.h
View File

@ -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,},}