[ALPHA] Fix some compiler warnings from gcc 4.

arch/alpha/kernel/osf_sys.c

@@ -91,8 +91,8 @@ osf_set_program_attributes(unsigned long text_start, unsigned long text_len,
  * braindamage (it can't really handle filesystems where the directory
  * offset differences aren't the same as "d_reclen").
  */
-#define NAME_OFFSET(de) ((int) ((de)->d_name - (char __user *) (de)))
-#define ROUND_UP(x) (((x)+3) & ~3)
+#define NAME_OFFSET	offsetof (struct osf_dirent, d_name)
+#define ROUND_UP(x)	(((x)+3) & ~3)
 
 struct osf_dirent {
 	unsigned int d_ino;
@@ -114,7 +114,7 @@ osf_filldir(void *__buf, const char *name, int namlen, loff_t offset,
 {
 	struct osf_dirent __user *dirent;
 	struct osf_dirent_callback *buf = (struct osf_dirent_callback *) __buf;
-	unsigned int reclen = ROUND_UP(NAME_OFFSET(dirent) + namlen + 1);
+	unsigned int reclen = ROUND_UP(NAME_OFFSET + namlen + 1);
 
 	buf->error = -EINVAL;	/* only used if we fail */
 	if (reclen > buf->count)
@@ -989,7 +989,7 @@ osf_select(int n, fd_set __user *inp, fd_set __user *outp, fd_set __user *exp,
 	fd_set_bits fds;
 	char *bits;
 	size_t size;
-	unsigned long timeout;
+	long timeout;
 	int ret;
 
 	timeout = MAX_SCHEDULE_TIMEOUT;

arch/alpha/kernel/ptrace.c

@@ -91,15 +91,15 @@ static int regoff[] = {
 	PT_REG(	   pc)
 };
 
-static long zero;
+static unsigned long zero;
 
 /*
  * Get address of register REGNO in task TASK.
  */
-static long *
+static unsigned long *
 get_reg_addr(struct task_struct * task, unsigned long regno)
 {
-	long *addr;
+	unsigned long *addr;
 
 	if (regno == 30) {
 		addr = &task->thread_info->pcb.usp;
@@ -109,7 +109,7 @@ get_reg_addr(struct task_struct * task, unsigned long regno)
 		zero = 0;
 		addr = &zero;
 	} else {
-		addr = (long *)((long)task->thread_info + regoff[regno]);
+		addr = (void *)task->thread_info + regoff[regno];
 	}
 	return addr;
 }
@@ -117,7 +117,7 @@ get_reg_addr(struct task_struct * task, unsigned long regno)
 /*
  * Get contents of register REGNO in task TASK.
  */
-static long
+static unsigned long
 get_reg(struct task_struct * task, unsigned long regno)
 {
 	/* Special hack for fpcr -- combine hardware and software bits.  */
@@ -135,7 +135,7 @@ get_reg(struct task_struct * task, unsigned long regno)
  * Write contents of register REGNO in task TASK.
  */
 static int
-put_reg(struct task_struct *task, unsigned long regno, long data)
+put_reg(struct task_struct *task, unsigned long regno, unsigned long data)
 {
 	if (regno == 63) {
 		task->thread_info->ieee_state
@@ -168,11 +168,11 @@ int
 ptrace_set_bpt(struct task_struct * child)
 {
 	int displ, i, res, reg_b, nsaved = 0;
-	u32 insn, op_code;
+	unsigned int insn, op_code;
 	unsigned long pc;
 
 	pc  = get_reg(child, REG_PC);
-	res = read_int(child, pc, &insn);
+	res = read_int(child, pc, (int *) &insn);
 	if (res < 0)
 		return res;
 
@@ -203,7 +203,8 @@ ptrace_set_bpt(struct task_struct * child)
 
 	/* install breakpoints: */
 	for (i = 0; i < nsaved; ++i) {
-		res = read_int(child, child->thread_info->bpt_addr[i], &insn);
+		res = read_int(child, child->thread_info->bpt_addr[i],
+			       (int *) &insn);
 		if (res < 0)
 			return res;
 		child->thread_info->bpt_insn[i] = insn;

arch/alpha/kernel/srmcons.c

@@ -91,15 +91,15 @@ srmcons_receive_chars(unsigned long data)
 
 /* called with callback_lock held */
 static int
-srmcons_do_write(struct tty_struct *tty, const unsigned char *buf, int count)
+srmcons_do_write(struct tty_struct *tty, const char *buf, int count)
 {
-	unsigned char *str_cr = "\r";
+	static char str_cr[1] = "\r";
 	long c, remaining = count;
 	srmcons_result result;
-	unsigned char *cur;
+	char *cur;
 	int need_cr;
 
-	for (cur = (unsigned char *)buf; remaining > 0; ) {
+	for (cur = (char *)buf; remaining > 0; ) {
 		need_cr = 0;
 		/* 
 		 * Break it up into reasonable size chunks to allow a chance
@@ -138,7 +138,7 @@ srmcons_write(struct tty_struct *tty, int from_user,
 	unsigned long flags;
 
 	if (from_user) {
-		unsigned char tmp[512];
+		char tmp[512];
 		int ret = 0;
 		size_t c;
 
@@ -167,7 +167,7 @@ srmcons_write(struct tty_struct *tty, int from_user,
 	}
 
 	spin_lock_irqsave(&srmcons_callback_lock, flags);
-	srmcons_do_write(tty, buf, count);
+	srmcons_do_write(tty, (const char *) buf, count);
 	spin_unlock_irqrestore(&srmcons_callback_lock, flags);
 
 	return count;

include/asm-alpha/tlbflush.h

@@ -86,7 +86,7 @@ flush_tlb(void)
 static inline void
 flush_tlb_other(struct mm_struct *mm)
 {
-	long *mmc = &mm->context[smp_processor_id()];
+	unsigned long *mmc = &mm->context[smp_processor_id()];
 	/* Check it's not zero first to avoid cacheline ping pong
 	   when possible.  */
 	if (*mmc) *mmc = 0;

include/asm-alpha/unistd.h

@@ -618,7 +618,7 @@ static inline long read(int fd, char * buf, size_t nr)
 	return sys_read(fd, buf, nr);
 }
 
-extern long execve(char *, char **, char **);
+extern int execve(char *, char **, char **);
 
 static inline long setsid(void)
 {