diff --git a/arch/h8300/kernel/sys_h8300.c b/arch/h8300/kernel/sys_h8300.c
index 11ba75a05220..de7688cfd573 100644
--- a/arch/h8300/kernel/sys_h8300.c
+++ b/arch/h8300/kernel/sys_h8300.c
@@ -288,9 +288,9 @@ asmlinkage void syscall_print(void *dummy,...)
 int kernel_execve(const char *filename, char *const argv[], char *const envp[])
 {
 	register long res __asm__("er0");
+	register char *const *_c __asm__("er3") = envp;
+	register char *const *_b __asm__("er2") = argv;
 	register const char * _a __asm__("er1") = filename;
-	register void *_b __asm__("er2") = argv;
-	register void *_c __asm__("er3") = envp;
 	__asm__ __volatile__ ("mov.l %1,er0\n\t"
 			"trapa	#0\n\t"
 			: "=r" (res)
diff --git a/arch/h8300/kernel/traps.c b/arch/h8300/kernel/traps.c
index 300e3279ca5a..f97183011c2c 100644
--- a/arch/h8300/kernel/traps.c
+++ b/arch/h8300/kernel/traps.c
@@ -136,7 +136,7 @@ void show_stack(struct task_struct *task, unsigned long *esp)
 	printk("\nCall Trace:");
 	i = 0;
 	stack = esp;
-	while (((unsigned long)stack & (THREAD_SIZE - 1)) == 0) {
+	while (((unsigned long)stack & (THREAD_SIZE - 1)) != 0) {
 		addr = *stack++;
 		/*
 		 * If the address is either in the text segment of the
diff --git a/include/asm-h8300/processor.h b/include/asm-h8300/processor.h
index 99b664aa2083..49fc886a6232 100644
--- a/include/asm-h8300/processor.h
+++ b/include/asm-h8300/processor.h
@@ -78,7 +78,7 @@ struct thread_struct {
 do {							        \
 	set_fs(USER_DS);           /* reads from user space */  \
   	(_regs)->pc = (_pc);				        \
-	(_regs)->ccr &= 0x00;	   /* clear kernel flag */      \
+	(_regs)->ccr = 0x00;	   /* clear all flags */        \
 	(_regs)->er5 = current->mm->start_data;	/* GOT base */  \
 	wrusp((unsigned long)(_usp) - sizeof(unsigned long)*3);	\
 } while(0)