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s390/ptrace: add missing ifdef

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if (MACHINE_HAS_TE) translates to if (0) on !CONFIG_64BIT however the
compiler still warns about invalid shifts within non-reachable code.
So add an explicit ifdef to get rid of this warning:

arch/s390/kernel/ptrace.c: In function ‘update_per_regs’:
arch/s390/kernel/ptrace.c:63:4: warning: left shift count >= width of type [enabled by default]
arch/s390/kernel/ptrace.c:65:4: warning: left shift count >= width of type [enabled by default]

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Heiko Carstens
2012-09-14 12:59:47 +02:00
committed by Martin Schwidefsky
parent 1a0f24878e
commit 66389e8583
1 changed files with 2 additions and 1 deletions
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3
arch/s390/kernel/ptrace.c
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@@ -53,6 +53,7 @@ void update_per_regs(struct task_struct *task)
struct thread_struct *thread = &task->thread; struct thread_struct *thread = &task->thread;
struct per_regs old, new; struct per_regs old, new;
#ifdef CONFIG_64BIT
/* Take care of the enable/disable of transactional execution. */ /* Take care of the enable/disable of transactional execution. */
if (MACHINE_HAS_TE) { if (MACHINE_HAS_TE) {
unsigned long cr0, cr0_new; unsigned long cr0, cr0_new;
@@ -67,7 +68,7 @@ void update_per_regs(struct task_struct *task)
if (cr0 != cr0_new) if (cr0 != cr0_new)
__ctl_load(cr0_new, 0, 0); __ctl_load(cr0_new, 0, 0);
} }
#endif
/* Copy user specified PER registers */ /* Copy user specified PER registers */
new.control = thread->per_user.control; new.control = thread->per_user.control;
new.start = thread->per_user.start; new.start = thread->per_user.start;