From 261bb92054b9e0835c176a27967dd9eb326d010c Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Wed, 27 Oct 2010 15:33:58 -0700 Subject: [PATCH] ptrace: cleanup arch_ptrace() on mn10300 Use new 'datap' variable in order to remove unnecessary castings. Also remove checking @addr less than 0 because @addr is now unsigned. Signed-off-by: Namhyung Kim Cc: David Howells Cc: Koichi Yasutake Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/mn10300/kernel/ptrace.c | 17 ++++++++--------- 1 file changed, 8 insertions(+), 9 deletions(-) diff --git a/arch/mn10300/kernel/ptrace.c b/arch/mn10300/kernel/ptrace.c index ec4b41439e99..5c0b07e61006 100644 --- a/arch/mn10300/kernel/ptrace.c +++ b/arch/mn10300/kernel/ptrace.c @@ -300,27 +300,26 @@ long arch_ptrace(struct task_struct *child, long request, { unsigned long tmp; int ret; + unsigned long __user *datap = (unsigned long __user *) data; switch (request) { /* read the word at location addr in the USER area. */ case PTRACE_PEEKUSR: ret = -EIO; - if ((addr & 3) || addr < 0 || - addr > sizeof(struct user) - 3) + if ((addr & 3) || addr > sizeof(struct user) - 3) break; tmp = 0; /* Default return condition */ if (addr < NR_PTREGS << 2) tmp = get_stack_long(child, ptrace_regid_to_frame[addr]); - ret = put_user(tmp, (unsigned long *) data); + ret = put_user(tmp, datap); break; /* write the word at location addr in the USER area */ case PTRACE_POKEUSR: ret = -EIO; - if ((addr & 3) || addr < 0 || - addr > sizeof(struct user) - 3) + if ((addr & 3) || addr > sizeof(struct user) - 3) break; ret = 0; @@ -333,25 +332,25 @@ long arch_ptrace(struct task_struct *child, long request, return copy_regset_to_user(child, &user_mn10300_native_view, REGSET_GENERAL, 0, NR_PTREGS * sizeof(long), - (void __user *)data); + datap); case PTRACE_SETREGS: /* Set all integer regs in the child. */ return copy_regset_from_user(child, &user_mn10300_native_view, REGSET_GENERAL, 0, NR_PTREGS * sizeof(long), - (const void __user *)data); + datap); case PTRACE_GETFPREGS: /* Get the child FPU state. */ return copy_regset_to_user(child, &user_mn10300_native_view, REGSET_FPU, 0, sizeof(struct fpu_state_struct), - (void __user *)data); + datap); case PTRACE_SETFPREGS: /* Set the child FPU state. */ return copy_regset_from_user(child, &user_mn10300_native_view, REGSET_FPU, 0, sizeof(struct fpu_state_struct), - (const void __user *)data); + datap); default: ret = ptrace_request(child, request, addr, data);