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authorNamhyung Kim <namhyung@gmail.com>2010-10-27 15:33:52 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-10-27 18:03:10 -0700
commit81d3285c96dd90044ffe2c2c5d56405a5423d753 (patch)
tree4b592e4d2f4d51b3a89a95d77bebb0fbc77133ab /arch/frv/kernel
parent475a4b813816fe9af4cdf7833799036b679f46d0 (diff)
downloadlinux-81d3285c96dd90044ffe2c2c5d56405a5423d753.tar.gz
ptrace: cleanup arch_ptrace() on frv
Use new 'regno', 'datap' variables in order to remove duplicated expressions and unnecessary castings. Alse remove checking @addr less than 0 because addr is now unsigned. Signed-off-by: Namhyung Kim <namhyung@gmail.com> Cc: David Howells <dhowells@redhat.com> Cc: "Daniel K." <dk@uw.no> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/frv/kernel')
-rw-r--r--arch/frv/kernel/ptrace.c29
1 files changed, 13 insertions, 16 deletions
diff --git a/arch/frv/kernel/ptrace.c b/arch/frv/kernel/ptrace.c
index e9dbfad9358..9d68f7fac73 100644
--- a/arch/frv/kernel/ptrace.c
+++ b/arch/frv/kernel/ptrace.c
@@ -259,19 +259,21 @@ long arch_ptrace(struct task_struct *child, long request,
{
unsigned long tmp;
int ret;
+ int regno = addr >> 2;
+ unsigned long __user *datap = (unsigned long __user *) data;
switch (request) {
/* read the word at location addr in the USER area. */
case PTRACE_PEEKUSR: {
tmp = 0;
ret = -EIO;
- if ((addr & 3) || addr < 0)
+ if (addr & 3)
break;
ret = 0;
- switch (addr >> 2) {
+ switch (regno) {
case 0 ... PT__END - 1:
- tmp = get_reg(child, addr >> 2);
+ tmp = get_reg(child, regno);
break;
case PT__END + 0:
@@ -300,23 +302,18 @@ long arch_ptrace(struct task_struct *child, long request,
}
if (ret == 0)
- ret = put_user(tmp, (unsigned long *) data);
+ ret = put_user(tmp, datap);
break;
}
case PTRACE_POKEUSR: /* write the word at location addr in the USER area */
ret = -EIO;
- if ((addr & 3) || addr < 0)
+ if (addr & 3)
break;
- ret = 0;
- switch (addr >> 2) {
+ switch (regno) {
case 0 ... PT__END - 1:
- ret = put_reg(child, addr >> 2, data);
- break;
-
- default:
- ret = -EIO;
+ ret = put_reg(child, regno, data);
break;
}
break;
@@ -325,25 +322,25 @@ long arch_ptrace(struct task_struct *child, long request,
return copy_regset_to_user(child, &user_frv_native_view,
REGSET_GENERAL,
0, sizeof(child->thread.user->i),
- (void __user *)data);
+ datap);
case PTRACE_SETREGS: /* Set all integer regs in the child. */
return copy_regset_from_user(child, &user_frv_native_view,
REGSET_GENERAL,
0, sizeof(child->thread.user->i),
- (const void __user *)data);
+ datap);
case PTRACE_GETFPREGS: /* Get the child FP/Media state. */
return copy_regset_to_user(child, &user_frv_native_view,
REGSET_FPMEDIA,
0, sizeof(child->thread.user->f),
- (void __user *)data);
+ datap);
case PTRACE_SETFPREGS: /* Set the child FP/Media state. */
return copy_regset_from_user(child, &user_frv_native_view,
REGSET_FPMEDIA,
0, sizeof(child->thread.user->f),
- (const void __user *)data);
+ datap);
default:
ret = ptrace_request(child, request, addr, data);