From: Ralf Baechle <ralf@linux-mips.org>
Date: Mon, 5 Dec 2005 13:47:25 +0000 (+0000)
Subject: MIPS: DSP: eleminate used_dsp.
X-Git-Tag: v2.6.16-rc1~462^2~23
X-Git-Url: http://pilppa.org/gitweb/?a=commitdiff_plain;h=6c35585273b26a580b2e2ad3d6a7db282308eec5;p=linux-2.6-omap-h63xx.git

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>
---

diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c
index 510da5fda56..8d254933530 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 7e55457a491..1f998bfde16 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 f1980c6c3bc..de53055a62a 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,},}