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Diffstat (limited to 'arch/mips/kernel/ptrace.c')
-rw-r--r--arch/mips/kernel/ptrace.c18
1 files changed, 10 insertions, 8 deletions
diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c
index 362d1728e531..258d74fd0b63 100644
--- a/arch/mips/kernel/ptrace.c
+++ b/arch/mips/kernel/ptrace.c
@@ -106,6 +106,7 @@ int ptrace_setregs (struct task_struct *child, __s64 __user *data)
106int ptrace_getfpregs (struct task_struct *child, __u32 __user *data) 106int ptrace_getfpregs (struct task_struct *child, __u32 __user *data)
107{ 107{
108 int i; 108 int i;
109 unsigned int tmp;
109 110
110 if (!access_ok(VERIFY_WRITE, data, 33 * 8)) 111 if (!access_ok(VERIFY_WRITE, data, 33 * 8))
111 return -EIO; 112 return -EIO;
@@ -121,10 +122,10 @@ int ptrace_getfpregs (struct task_struct *child, __u32 __user *data)
121 122
122 __put_user (child->thread.fpu.fcr31, data + 64); 123 __put_user (child->thread.fpu.fcr31, data + 64);
123 124
125 preempt_disable();
124 if (cpu_has_fpu) { 126 if (cpu_has_fpu) {
125 unsigned int flags, tmp; 127 unsigned int flags;
126 128
127 preempt_disable();
128 if (cpu_has_mipsmt) { 129 if (cpu_has_mipsmt) {
129 unsigned int vpflags = dvpe(); 130 unsigned int vpflags = dvpe();
130 flags = read_c0_status(); 131 flags = read_c0_status();
@@ -138,11 +139,11 @@ int ptrace_getfpregs (struct task_struct *child, __u32 __user *data)
138 __asm__ __volatile__("cfc1\t%0,$0" : "=r" (tmp)); 139 __asm__ __volatile__("cfc1\t%0,$0" : "=r" (tmp));
139 write_c0_status(flags); 140 write_c0_status(flags);
140 } 141 }
141 preempt_enable();
142 __put_user (tmp, data + 65);
143 } else { 142 } else {
144 __put_user ((__u32) 0, data + 65); 143 tmp = 0;
145 } 144 }
145 preempt_enable();
146 __put_user (tmp, data + 65);
146 147
147 return 0; 148 return 0;
148} 149}
@@ -245,16 +246,17 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
245 unsigned int mtflags; 246 unsigned int mtflags;
246#endif /* CONFIG_MIPS_MT_SMTC */ 247#endif /* CONFIG_MIPS_MT_SMTC */
247 248
248 if (!cpu_has_fpu) 249 preempt_disable();
250 if (!cpu_has_fpu) {
251 preempt_enable();
249 break; 252 break;
253 }
250 254
251#ifdef CONFIG_MIPS_MT_SMTC 255#ifdef CONFIG_MIPS_MT_SMTC
252 /* Read-modify-write of Status must be atomic */ 256 /* Read-modify-write of Status must be atomic */
253 local_irq_save(irqflags); 257 local_irq_save(irqflags);
254 mtflags = dmt(); 258 mtflags = dmt();
255#endif /* CONFIG_MIPS_MT_SMTC */ 259#endif /* CONFIG_MIPS_MT_SMTC */
256
257 preempt_disable();
258 if (cpu_has_mipsmt) { 260 if (cpu_has_mipsmt) {
259 unsigned int vpflags = dvpe(); 261 unsigned int vpflags = dvpe();
260 flags = read_c0_status(); 262 flags = read_c0_status();