parisc: copy_thread(): rename 'arg' argument to 'kthread_arg'

The 'arg' argument to copy_thread() is only ever used when forking a new
kernel thread. Hence, rename it to 'kthread_arg' for clarity (and
consistency with do_fork() and other arch-specific implementations of
copy_thread()).

Signed-off-by: Alex Dowad <alexinbeijing@gmail.com>
Signed-off-by: Helge Deller <deller@gmx.de>

diff --git a/arch/parisc/kernel/process.c b/arch/parisc/kernel/process.c
index 8a488c22a99f7bb3836fc93a23a31561a237fb86..809905a811ed72a543ad257c1394900a4b976af8 100644 (file)
--- a/arch/parisc/kernel/process.c
+++ b/arch/parisc/kernel/process.c
@@ -181,9 +181,12 @@ int dump_task_fpu (struct task_struct *tsk, elf_fpregset_t *r)
        return 1;
 }
 
+/*
+ * Copy architecture-specific thread state
+ */
 int
 copy_thread(unsigned long clone_flags, unsigned long usp,
-           unsigned long arg, struct task_struct *p)
+           unsigned long kthread_arg, struct task_struct *p)
 {
        struct pt_regs *cregs = &(p->thread.regs);
        void *stack = task_stack_page(p);
@@ -195,11 +198,10 @@ copy_thread(unsigned long clone_flags, unsigned long usp,
        extern void * const child_return;
 
        if (unlikely(p->flags & PF_KTHREAD)) {
+               /* kernel thread */
                memset(cregs, 0, sizeof(struct pt_regs));
                if (!usp) /* idle thread */
                        return 0;
-
-               /* kernel thread */
                /* Must exit via ret_from_kernel_thread in order
                 * to call schedule_tail()
                 */
@@ -215,7 +217,7 @@ copy_thread(unsigned long clone_flags, unsigned long usp,
 #else
                cregs->gr[26] = usp;
 #endif
-               cregs->gr[25] = arg;
+               cregs->gr[25] = kthread_arg;
        } else {
                /* user thread */
                /* usp must be word aligned.  This also prevents users from