diff options
Diffstat (limited to 'arch/mips/kernel/syscall.c')
| -rw-r--r-- | arch/mips/kernel/syscall.c | 25 |
1 files changed, 9 insertions, 16 deletions
diff --git a/arch/mips/kernel/syscall.c b/arch/mips/kernel/syscall.c index 201cb76b4df9..d7feee0c2739 100644 --- a/arch/mips/kernel/syscall.c +++ b/arch/mips/kernel/syscall.c @@ -41,9 +41,9 @@ /* * For historic reasons the pipe(2) syscall on MIPS has an unusual calling - * convention. It returns results in registers $v0 / $v1 which means there + * convention. It returns results in registers $v0 / $v1 which means there * is no need for it to do verify the validity of a userspace pointer - * argument. Historically that used to be expensive in Linux. These days + * argument. Historically that used to be expensive in Linux. These days * the performance advantage is negligible. */ asmlinkage int sysm_pipe(nabi_no_regargs volatile struct pt_regs regs) @@ -124,7 +124,7 @@ _sys_clone(nabi_no_regargs struct pt_regs regs) child_tidptr = (int __user *) regs.regs[8]; #endif return do_fork(clone_flags, newsp, 0, - parent_tidptr, child_tidptr); + parent_tidptr, child_tidptr); } SYSCALL_DEFINE1(set_thread_area, unsigned long, addr) @@ -138,10 +138,10 @@ SYSCALL_DEFINE1(set_thread_area, unsigned long, addr) return 0; } -static inline int mips_atomic_set(struct pt_regs *regs, - unsigned long addr, unsigned long new) +static inline int mips_atomic_set(unsigned long addr, unsigned long new) { unsigned long old, tmp; + struct pt_regs *regs; unsigned int err; if (unlikely(addr & 3)) @@ -222,6 +222,7 @@ static inline int mips_atomic_set(struct pt_regs *regs, if (unlikely(err)) return err; + regs = current_pt_regs(); regs->regs[2] = old; regs->regs[7] = 0; /* No error */ @@ -235,22 +236,14 @@ static inline int mips_atomic_set(struct pt_regs *regs, : "r" (regs)); /* unreached. Honestly. */ - while (1); + unreachable(); } -save_static_function(sys_sysmips); -static int __used noinline -_sys_sysmips(nabi_no_regargs struct pt_regs regs) +SYSCALL_DEFINE3(sysmips, long, cmd, long, arg1, long, arg2) { - long cmd, arg1, arg2; - - cmd = regs.regs[4]; - arg1 = regs.regs[5]; - arg2 = regs.regs[6]; - switch (cmd) { case MIPS_ATOMIC_SET: - return mips_atomic_set(®s, arg1, arg2); + return mips_atomic_set(arg1, arg2); case MIPS_FIXADE: if (arg1 & ~3) |