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| author | Namhyung Kim <namhyung@gmail.com> | 2010-10-27 15:33:52 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-10-27 18:03:10 -0700 |
| commit | 81d3285c96dd90044ffe2c2c5d56405a5423d753 (patch) | |
| tree | 4b592e4d2f4d51b3a89a95d77bebb0fbc77133ab | |
| parent | 475a4b813816fe9af4cdf7833799036b679f46d0 (diff) | |
| download | linux-81d3285c96dd90044ffe2c2c5d56405a5423d753.tar.bz2 | |
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>
| -rw-r--r-- | arch/frv/kernel/ptrace.c | 29 |
1 files changed, 13 insertions, 16 deletions
diff --git a/arch/frv/kernel/ptrace.c b/arch/frv/kernel/ptrace.c index e9dbfad93589..9d68f7fac730 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); |