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| author | Namhyung Kim <namhyung@gmail.com> | 2010-10-28 02:33:58 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-10-28 05:03:11 +0400 |
| commit | 261bb92054b9e0835c176a27967dd9eb326d010c (patch) | |
| tree | 2ec294c3a859b8acfab929fb1d97793801ce6da8 | |
| parent | fb671139a27abc44303ef938c3811d910724c493 (diff) | |
| download | linux-261bb92054b9e0835c176a27967dd9eb326d010c.tar.xz | |
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 <namhyung@gmail.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | arch/mn10300/kernel/ptrace.c | 17 |
1 files 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); |