TTY: replace MIN and MAX macro usages with min() and max()

drivers/char/n_tty.c

@@ -48,10 +48,6 @@
 #define IS_CONSOLE_DEV(dev)	(kdev_val(dev) == __mkdev(TTY_MAJOR,0))
 #define IS_SYSCONS_DEV(dev)	(kdev_val(dev) == __mkdev(TTYAUX_MAJOR,1))
 
-#ifndef MIN
-#define MIN(a,b)	((a) < (b) ? (a) : (b))
-#endif
-
 /* number of characters left in xmit buffer before select has we have room */
 #define WAKEUP_CHARS 256
 
@@ -725,16 +721,18 @@ static void n_tty_receive_buf(struct tty_struct *tty, const unsigned char *cp,
 
 	if (tty->real_raw) {
 		spin_lock_irqsave(&tty->read_lock, cpuflags);
-		i = MIN(count, MIN(N_TTY_BUF_SIZE - tty->read_cnt,
-				   N_TTY_BUF_SIZE - tty->read_head));
+		i = min(N_TTY_BUF_SIZE - tty->read_cnt,
+			N_TTY_BUF_SIZE - tty->read_head);
+		i = min(count, i);
 		memcpy(tty->read_buf + tty->read_head, cp, i);
 		tty->read_head = (tty->read_head + i) & (N_TTY_BUF_SIZE-1);
 		tty->read_cnt += i;
 		cp += i;
 		count -= i;
 
-		i = MIN(count, MIN(N_TTY_BUF_SIZE - tty->read_cnt,
-			       N_TTY_BUF_SIZE - tty->read_head));
+		i = min(N_TTY_BUF_SIZE - tty->read_cnt,
+			N_TTY_BUF_SIZE - tty->read_head);
+		i = min(count, i);
 		memcpy(tty->read_buf + tty->read_head, cp, i);
 		tty->read_head = (tty->read_head + i) & (N_TTY_BUF_SIZE-1);
 		tty->read_cnt += i;
@@ -915,7 +913,8 @@ static inline int copy_from_read_buf(struct tty_struct *tty,
 
 	retval = 0;
 	spin_lock_irqsave(&tty->read_lock, flags);
-	n = MIN(*nr, MIN(tty->read_cnt, N_TTY_BUF_SIZE - tty->read_tail));
+	n = min(tty->read_cnt, N_TTY_BUF_SIZE - tty->read_tail);
+	n = min((ssize_t)*nr, n);
 	spin_unlock_irqrestore(&tty->read_lock, flags);
 	if (n) {
 		mb();

drivers/char/pty.c

@@ -64,8 +64,6 @@ static struct termios *pts_termios_locked[UNIX98_NR_MAJORS][NR_PTYS];
 static struct pty_struct ptm_state[UNIX98_NR_MAJORS][NR_PTYS];
 #endif
 
-#define MIN(a,b)	((a) < (b) ? (a) : (b))
-
 static void pty_close(struct tty_struct * tty, struct file * filp)
 {
 	if (!tty)
@@ -156,7 +154,7 @@ static int pty_write(struct tty_struct * tty, int from_user,
 				n = count;
 			if (!n) break;
 
-			n  = MIN(n, PTY_BUF_SIZE);
+			n  = min(n, PTY_BUF_SIZE);
 			n -= copy_from_user(temp_buffer, buf, n);
 			if (!n) {
 				if (!c)

drivers/char/tty_io.c

@@ -159,13 +159,6 @@ extern void tx3912_console_init(void);
 extern void tx3912_rs_init(void);
 extern void hvc_console_init(void);
 
-#ifndef MIN
-#define MIN(a,b)	((a) < (b) ? (a) : (b))
-#endif
-#ifndef MAX
-#define MAX(a,b)	((a) < (b) ? (b) : (a))
-#endif
-
 static struct tty_struct *alloc_tty_struct(void)
 {
 	struct tty_struct *tty;
@@ -714,7 +707,7 @@ static inline ssize_t do_tty_write(
 		unlock_kernel();
 	} else {
 		for (;;) {
-			unsigned long size = MAX(PAGE_SIZE*2,16384);
+			unsigned long size = max((unsigned long)PAGE_SIZE*2, 16384UL);
 			if (size > count)
 				size = count;
 			lock_kernel();