xtensa: clean up xtensa/kernel/ptrace.c

- make locally-used functions static;
- drop meaningless comments and commented out code;
- fix code style and alignment.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>

arch/xtensa/kernel/ptrace.c

-// TODO some minor issues
 /*
  * This file is subject to the terms and conditions of the GNU General Public
  * License.  See the file "COPYING" in the main directory of this archive
@@ -24,13 +23,13 @@
 #include <linux/security.h>
 #include <linux/signal.h>
 #include <linux/smp.h>
+#include <linux/uaccess.h>
 
 #include <asm/coprocessor.h>
 #include <asm/elf.h>
 #include <asm/page.h>
 #include <asm/pgtable.h>
 #include <asm/ptrace.h>
-#include <linux/uaccess.h>
 
 
 void user_enable_single_step(struct task_struct *child)
@@ -52,7 +51,7 @@ void ptrace_disable(struct task_struct *child)
 	/* Nothing to do.. */
 }
 
-int ptrace_getregs(struct task_struct *child, void __user *uregs)
+static int ptrace_getregs(struct task_struct *child, void __user *uregs)
 {
 	struct pt_regs *regs = task_pt_regs(child);
 	xtensa_gregset_t __user *gregset = uregs;
@@ -78,7 +77,7 @@ int ptrace_getregs(struct task_struct *child, void __user *uregs)
 	return 0;
 }
 
-int ptrace_setregs(struct task_struct *child, void __user *uregs)
+static int ptrace_setregs(struct task_struct *child, void __user *uregs)
 {
 	struct pt_regs *regs = task_pt_regs(child);
 	xtensa_gregset_t *gregset = uregs;
@@ -127,7 +126,7 @@ int ptrace_setregs(struct task_struct *child, void __user *uregs)
 }
 
 
-int ptrace_getxregs(struct task_struct *child, void __user *uregs)
+static int ptrace_getxregs(struct task_struct *child, void __user *uregs)
 {
 	struct pt_regs *regs = task_pt_regs(child);
 	struct thread_info *ti = task_thread_info(child);
@@ -151,7 +150,7 @@ int ptrace_getxregs(struct task_struct *child, void __user *uregs)
 	return ret ? -EFAULT : 0;
 }
 
-int ptrace_setxregs(struct task_struct *child, void __user *uregs)
+static int ptrace_setxregs(struct task_struct *child, void __user *uregs)
 {
 	struct thread_info *ti = task_thread_info(child);
 	struct pt_regs *regs = task_pt_regs(child);
@@ -177,7 +176,8 @@ int ptrace_setxregs(struct task_struct *child, void __user *uregs)
 	return ret ? -EFAULT : 0;
 }
 
-int ptrace_peekusr(struct task_struct *child, long regno, long __user *ret)
+static int ptrace_peekusr(struct task_struct *child, long regno,
+			  long __user *ret)
 {
 	struct pt_regs *regs;
 	unsigned long tmp;
@@ -186,7 +186,6 @@ int ptrace_peekusr(struct task_struct *child, long regno, long __user *ret)
 	tmp = 0;  /* Default return value. */
 
 	switch(regno) {
-
 	case REG_AR_BASE ... REG_AR_BASE + XCHAL_NUM_AREGS - 1:
 		tmp = regs->areg[regno - REG_AR_BASE];
 		break;
@@ -202,7 +201,8 @@ int ptrace_peekusr(struct task_struct *child, long regno, long __user *ret)
 	case REG_PS:
 		/* Note: PS.EXCM is not set while user task is running;
 		 * its being set in regs is for exception handling
-			 * convenience.  */
+		 * convenience.
+		 */
 		tmp = (regs->ps & ~(1 << PS_EXCM_BIT));
 		break;
 
@@ -213,7 +213,8 @@ int ptrace_peekusr(struct task_struct *child, long regno, long __user *ret)
 		{
 			unsigned long wb = regs->windowbase;
 			unsigned long ws = regs->windowstart;
-			tmp = ((ws>>wb) | (ws<<(WSBITS-wb))) & ((1<<WSBITS)-1);
+			tmp = ((ws >> wb) | (ws << (WSBITS - wb))) &
+				((1 << WSBITS) - 1);
 			break;
 		}
 	case REG_LBEG:
@@ -242,7 +243,7 @@ int ptrace_peekusr(struct task_struct *child, long regno, long __user *ret)
 	return put_user(tmp, ret);
 }
 
-int ptrace_pokeusr(struct task_struct *child, long regno, long val)
+static int ptrace_pokeusr(struct task_struct *child, long regno, long val)
 {
 	struct pt_regs *regs;
 	regs = task_pt_regs(child);
@@ -473,7 +474,8 @@ void do_syscall_trace(void)
 	 * The 0x80 provides a way for the tracing parent to distinguish
 	 * between a syscall stop and SIGTRAP delivery
 	 */
-	ptrace_notify(SIGTRAP|((current->ptrace & PT_TRACESYSGOOD) ? 0x80 : 0));
+	ptrace_notify(SIGTRAP |
+		      ((current->ptrace & PT_TRACESYSGOOD) ? 0x80 : 0));
 
 	/*
 	 * this isn't the same as continuing with a signal, but it will do
@@ -488,18 +490,14 @@ void do_syscall_trace(void)
 
 void do_syscall_trace_enter(struct pt_regs *regs)
 {
-	if (test_thread_flag(TIF_SYSCALL_TRACE)
-			&& (current->ptrace & PT_PTRACED))
+	if (test_thread_flag(TIF_SYSCALL_TRACE) &&
+	    (current->ptrace & PT_PTRACED))
 		do_syscall_trace();
-
-#if 0
-	audit_syscall_entry(...);
-#endif
 }
 
 void do_syscall_trace_leave(struct pt_regs *regs)
 {
-	if ((test_thread_flag(TIF_SYSCALL_TRACE))
-			&& (current->ptrace & PT_PTRACED))
+	if (test_thread_flag(TIF_SYSCALL_TRACE) &&
+	    (current->ptrace & PT_PTRACED))
 		do_syscall_trace();
 }