[PATCH] uml: Formatting changes

This patch makes a bunch of non-functional changes -
    return(foo); becomes return foo;
    some statements are broken across lines for readability
    some trailing whitespace is cleaned up
    open_one_chan took four arguments, three of which could be
       deduced from the first.  Accordingly, they were eliminated.
    some examples of "} else {" had a newline added
    some whitespace cleanup in the indentation
    lines_init got some control flow cleanup
    some long lines were broken
    removed another emacs-specific C formatting comment
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/um/drivers/chan_kern.c

@@ -58,7 +58,7 @@ static void *not_configged_init(char *str, int device, struct chan_opts *opts)
 {
 	my_puts("Using a channel type which is configured out of "
 	       "UML\n");
-	return(NULL);
+	return NULL;
 }
 
 static int not_configged_open(int input, int output, int primary, void *data,
@@ -66,7 +66,7 @@ static int not_configged_open(int input, int output, int primary, void *data,
 {
 	my_puts("Using a channel type which is configured out of "
 	       "UML\n");
-	return(-ENODEV);
+	return -ENODEV;
 }
 
 static void not_configged_close(int fd, void *data)
@@ -79,21 +79,21 @@ static int not_configged_read(int fd, char *c_out, void *data)
 {
 	my_puts("Using a channel type which is configured out of "
 	       "UML\n");
-	return(-EIO);
+	return -EIO;
 }
 
 static int not_configged_write(int fd, const char *buf, int len, void *data)
 {
 	my_puts("Using a channel type which is configured out of "
 	       "UML\n");
-	return(-EIO);
+	return -EIO;
 }
 
 static int not_configged_console_write(int fd, const char *buf, int len)
 {
 	my_puts("Using a channel type which is configured out of "
 	       "UML\n");
-	return(-EIO);
+	return -EIO;
 }
 
 static int not_configged_window_size(int fd, void *data, unsigned short *rows,
@@ -101,7 +101,7 @@ static int not_configged_window_size(int fd, void *data, unsigned short *rows,
 {
 	my_puts("Using a channel type which is configured out of "
 	       "UML\n");
-	return(-ENODEV);
+	return -ENODEV;
 }
 
 static void not_configged_free(void *data)
@@ -135,17 +135,17 @@ int generic_read(int fd, char *c_out, void *unused)
 	n = os_read_file(fd, c_out, sizeof(*c_out));
 
 	if(n == -EAGAIN)
-		return(0);
+		return 0;
 	else if(n == 0)
-		return(-EIO);
-	return(n);
+		return -EIO;
+	return n;
 }
 
 /* XXX Trivial wrapper around os_write_file */
 
 int generic_write(int fd, const char *buf, int n, void *unused)
 {
-	return(os_write_file(fd, buf, n));
+	return os_write_file(fd, buf, n);
 }
 
 int generic_window_size(int fd, void *unused, unsigned short *rows_out,
@@ -156,14 +156,14 @@ int generic_window_size(int fd, void *unused, unsigned short *rows_out,
 
 	ret = os_window_size(fd, &rows, &cols);
 	if(ret < 0)
-		return(ret);
+		return ret;
 
 	ret = ((*rows_out != rows) || (*cols_out != cols));
 
 	*rows_out = rows;
 	*cols_out = cols;
 
-	return(ret);
+	return ret;
 }
 
 void generic_free(void *data)
@@ -192,19 +192,23 @@ static void tty_receive_char(struct tty_struct *tty, char ch)
 	tty_insert_flip_char(tty, ch, TTY_NORMAL);
 }
 
-static int open_one_chan(struct chan *chan, int input, int output, int primary)
+static int open_one_chan(struct chan *chan)
 {
 	int fd;
 
-	if(chan->opened) return(0);
-	if(chan->ops->open == NULL) fd = 0;
-	else fd = (*chan->ops->open)(input, output, primary, chan->data,
-				     &chan->dev);
-	if(fd < 0) return(fd);
+	if(chan->opened)
+		return 0;
+
+	if(chan->ops->open == NULL)
+		fd = 0;
+	else fd = (*chan->ops->open)(chan->input, chan->output, chan->primary,
+				     chan->data, &chan->dev);
+	if(fd < 0)
+		return fd;
 	chan->fd = fd;
 
 	chan->opened = 1;
-	return(0);
+	return 0;
 }
 
 int open_chan(struct list_head *chans)
@@ -215,11 +219,11 @@ int open_chan(struct list_head *chans)
 
 	list_for_each(ele, chans){
 		chan = list_entry(ele, struct chan, list);
-		ret = open_one_chan(chan, chan->input, chan->output,
-				    chan->primary);
-		if(chan->primary) err = ret;
+		ret = open_one_chan(chan);
+		if(chan->primary)
+			err = ret;
 	}
-	return(err);
+	return err;
 }
 
 void chan_enable_winch(struct list_head *chans, struct tty_struct *tty)
@@ -285,7 +289,7 @@ int write_chan(struct list_head *chans, const char *buf, int len,
 				reactivate_fd(chan->fd, write_irq);
 		}
 	}
-	return(ret);
+	return ret;
 }
 
 int console_write_chan(struct list_head *chans, const char *buf, int len)
@@ -301,10 +305,11 @@ int console_write_chan(struct list_head *chans, const char *buf, int len)
 		n = chan->ops->console_write(chan->fd, buf, len);
 		if(chan->primary) ret = n;
 	}
-	return(ret);
+	return ret;
 }
 
-int console_open_chan(struct line *line, struct console *co, struct chan_opts *opts)
+int console_open_chan(struct line *line, struct console *co,
+		      struct chan_opts *opts)
 {
 	if (!list_empty(&line->chan_list))
 		return 0;
@@ -327,12 +332,13 @@ int chan_window_size(struct list_head *chans, unsigned short *rows_out,
 	list_for_each(ele, chans){
 		chan = list_entry(ele, struct chan, list);
 		if(chan->primary){
-			if(chan->ops->window_size == NULL) return(0);
-			return(chan->ops->window_size(chan->fd, chan->data,
-						      rows_out, cols_out));
+			if(chan->ops->window_size == NULL)
+				return 0;
+			return chan->ops->window_size(chan->fd, chan->data,
+						      rows_out, cols_out);
 		}
 	}
-	return(0);
+	return 0;
 }
 
 void free_one_chan(struct chan *chan)
@@ -363,20 +369,20 @@ static int one_chan_config_string(struct chan *chan, char *str, int size,
 
 	if(chan == NULL){
 		CONFIG_CHUNK(str, size, n, "none", 1);
-		return(n);
+		return n;
 	}
 
 	CONFIG_CHUNK(str, size, n, chan->ops->type, 0);
 
 	if(chan->dev == NULL){
 		CONFIG_CHUNK(str, size, n, "", 1);
-		return(n);
+		return n;
 	}
 
 	CONFIG_CHUNK(str, size, n, ":", 0);
 	CONFIG_CHUNK(str, size, n, chan->dev, 0);
 
-	return(n);
+	return n;
 }
 
 static int chan_pair_config_string(struct chan *in, struct chan *out,
@@ -390,7 +396,7 @@ static int chan_pair_config_string(struct chan *in, struct chan *out,
 
 	if(in == out){
 		CONFIG_CHUNK(str, size, n, "", 1);
-		return(n);
+		return n;
 	}
 
 	CONFIG_CHUNK(str, size, n, ",", 1);
@@ -399,7 +405,7 @@ static int chan_pair_config_string(struct chan *in, struct chan *out,
 	size -= n;
 	CONFIG_CHUNK(str, size, n, "", 1);
 
-	return(n);
+	return n;
 }
 
 int chan_config_string(struct list_head *chans, char *str, int size,
@@ -418,7 +424,7 @@ int chan_config_string(struct list_head *chans, char *str, int size,
 			out = chan;
 	}
 
-	return(chan_pair_config_string(in, out, str, size, error_out));
+	return chan_pair_config_string(in, out, str, size, error_out);
 }
 
 struct chan_type {
@@ -484,14 +490,17 @@ static struct chan *parse_chan(char *str, int pri, int device,
 	if(ops == NULL){
 		my_printf("parse_chan couldn't parse \"%s\"\n",
 		       str);
-		return(NULL);
+		return NULL;
 	}
-	if(ops->init == NULL) return(NULL); 
+	if(ops->init == NULL)
+		return NULL;
 	data = (*ops->init)(str, device, opts);
-	if(data == NULL) return(NULL);
+	if(data == NULL)
+		return NULL;
 
 	chan = kmalloc(sizeof(*chan), GFP_ATOMIC);
-	if(chan == NULL) return(NULL);
+	if(chan == NULL)
+		return NULL;
 	*chan = ((struct chan) { .list	 	= LIST_HEAD_INIT(chan->list),
 				 .primary	= 1,
 				 .input		= 0,
@@ -501,7 +510,7 @@ static struct chan *parse_chan(char *str, int pri, int device,
 				 .pri 		= pri,
 				 .ops 		= ops,
 				 .data 		= data });
-	return(chan);
+	return chan;
 }
 
 int parse_chan_pair(char *str, struct list_head *chans, int pri, int device,
@@ -512,7 +521,8 @@ int parse_chan_pair(char *str, struct list_head *chans, int pri, int device,
 
 	if(!list_empty(chans)){
 		chan = list_entry(chans->next, struct chan, list);
-		if(chan->pri >= pri) return(0);
+		if(chan->pri >= pri)
+			return 0;
 		free_chan(chans);
 		INIT_LIST_HEAD(chans);
 	}
@@ -523,23 +533,29 @@ int parse_chan_pair(char *str, struct list_head *chans, int pri, int device,
 		*out = '\0';
 		out++;
 		new = parse_chan(in, pri, device, opts);
-		if(new == NULL) return(-1);
+		if(new == NULL)
+			return -1;
+
 		new->input = 1;
 		list_add(&new->list, chans);
 
 		new = parse_chan(out, pri, device, opts);
-		if(new == NULL) return(-1);
+		if(new == NULL)
+			return -1;
+
 		list_add(&new->list, chans);
 		new->output = 1;
 	}
 	else {
 		new = parse_chan(str, pri, device, opts);
-		if(new == NULL) return(-1);
+		if(new == NULL)
+			return -1;
+
 		list_add(&new->list, chans);
 		new->input = 1;
 		new->output = 1;
 	}
-	return(0);
+	return 0;
 }
 
 int chan_out_fd(struct list_head *chans)
@@ -550,9 +566,9 @@ int chan_out_fd(struct list_head *chans)
 	list_for_each(ele, chans){
 		chan = list_entry(ele, struct chan, list);
 		if(chan->primary && chan->output)
-			return(chan->fd);
+			return chan->fd;
 	}
-	return(-1);
+	return -1;
 }
 
 void chan_interrupt(struct list_head *chans, struct work_struct *task,

arch/um/drivers/line.c

@@ -124,7 +124,8 @@ static int buffer_data(struct line *line, const char *buf, int len)
 	if (len < end){
 		memcpy(line->tail, buf, len);
 		line->tail += len;
-	} else {
+	}
+	else {
 		/* The circular buffer is wrapping */
 		memcpy(line->tail, buf, end);
 		buf += end;
@@ -512,7 +513,8 @@ int line_setup(struct line *lines, unsigned int num, char *init, int all_allowed
 		/* We said con=/ssl= instead of con#=, so we are configuring all
 		 * consoles at once.*/
 		n = -1;
-	} else {
+	}
+	else {
 		n = simple_strtoul(init, &end, 0);
 		if(*end != '='){
 			printk(KERN_ERR "line_setup failed to parse \"%s\"\n",
@@ -527,7 +529,8 @@ int line_setup(struct line *lines, unsigned int num, char *init, int all_allowed
 		printk("line_setup - %d out of range ((0 ... %d) allowed)\n",
 		       n, num - 1);
 		return 0;
-	} else if (n >= 0){
+	}
+	else if (n >= 0){
 		if (lines[n].count > 0) {
 			printk("line_setup - device %d is open\n", n);
 			return 0;
@@ -541,11 +544,13 @@ int line_setup(struct line *lines, unsigned int num, char *init, int all_allowed
 				lines[n].valid = 1;
 			}	
 		}
-	} else if(!all_allowed){
+	}
+	else if(!all_allowed){
 		printk("line_setup - can't configure all devices from "
 		       "mconsole\n");
 		return 0;
-	} else {
+	}
+	else {
 		for(i = 0; i < num; i++){
 			if(lines[i].init_pri <= INIT_ALL){
 				lines[i].init_pri = INIT_ALL;
@@ -677,12 +682,13 @@ void lines_init(struct line *lines, int nlines)
 		line = &lines[i];
 		INIT_LIST_HEAD(&line->chan_list);
 		spin_lock_init(&line->lock);
-		if(line->init_str != NULL){
+		if(line->init_str == NULL)
+			continue;
+
 		line->init_str = kstrdup(line->init_str, GFP_KERNEL);
 		if(line->init_str == NULL)
 			printk("lines_init - kstrdup returned NULL\n");
 	}
-	}
 }
 
 struct winch {
@@ -717,8 +723,7 @@ irqreturn_t winch_interrupt(int irq, void *data, struct pt_regs *unused)
 	tty  = winch->tty;
 	if (tty != NULL) {
 		line = tty->driver_data;
-		chan_window_size(&line->chan_list,
-				 &tty->winsize.ws_row, 
+		chan_window_size(&line->chan_list, &tty->winsize.ws_row,
 				 &tty->winsize.ws_col);
 		kill_pg(tty->pgrp, SIGWINCH, 1);
 	}

arch/um/drivers/mconsole_kern.c

@@ -389,7 +389,6 @@ static void mconsole_get_config(int (*get_config)(char *, char *, int,
  out:
 	if(buf != default_buf)
 		kfree(buf);
-	
 }
 
 void mconsole_config(struct mc_request *req)

arch/um/drivers/ssl.c

@@ -84,15 +84,15 @@ static struct lines lines = LINES_INIT(NR_PORTS);
 
 static int ssl_config(char *str)
 {
-	return(line_config(serial_lines, 
-			   sizeof(serial_lines)/sizeof(serial_lines[0]), str));
+	return line_config(serial_lines,
+			   sizeof(serial_lines)/sizeof(serial_lines[0]), str);
 }
 
 static int ssl_get_config(char *dev, char *str, int size, char **error_out)
 {
-	return(line_get_config(dev, serial_lines, 
+	return line_get_config(dev, serial_lines,
 			       sizeof(serial_lines)/sizeof(serial_lines[0]),
-			       str, size, error_out));
+			       str, size, error_out);
 }
 
 static int ssl_remove(int n)
@@ -183,7 +183,7 @@ static int ssl_console_setup(struct console *co, char *options)
 {
 	struct line *line = &serial_lines[co->index];
 
-	return console_open_chan(line,co,&opts);
+	return console_open_chan(line, co, &opts);
 }
 
 static struct console ssl_cons = {
@@ -202,7 +202,8 @@ int ssl_init(void)
 	printk(KERN_INFO "Initializing software serial port version %d\n",
 	       ssl_version);
 	ssl_driver = line_register_devfs(&lines, &driver, &ssl_ops,
-					 serial_lines, ARRAY_SIZE(serial_lines));
+					 serial_lines,
+					 ARRAY_SIZE(serial_lines));
 
 	lines_init(serial_lines, sizeof(serial_lines)/sizeof(serial_lines[0]));
 
@@ -212,7 +213,7 @@ int ssl_init(void)
 
 	ssl_init_done = 1;
 	register_console(&ssl_cons);
-	return(0);
+	return 0;
 }
 late_initcall(ssl_init);
 
@@ -227,9 +228,9 @@ __uml_exitcall(ssl_exit);
 
 static int ssl_chan_setup(char *str)
 {
-	return(line_setup(serial_lines,
+	return line_setup(serial_lines,
 			  sizeof(serial_lines)/sizeof(serial_lines[0]),
-			  str, 1));
+			  str, 1);
 }
 
 __setup("ssl", ssl_chan_setup);

arch/um/drivers/stdio_console.c

@@ -91,13 +91,13 @@ struct line vts[MAX_TTYS] = { LINE_INIT(CONFIG_CON_ZERO_CHAN, &driver),
 
 static int con_config(char *str)
 {
-	return(line_config(vts, sizeof(vts)/sizeof(vts[0]), str));
+	return line_config(vts, sizeof(vts)/sizeof(vts[0]), str);
 }
 
 static int con_get_config(char *dev, char *str, int size, char **error_out)
 {
-	return(line_get_config(dev, vts, sizeof(vts)/sizeof(vts[0]), str, 
-			       size, error_out));
+	return line_get_config(dev, vts, sizeof(vts)/sizeof(vts[0]), str,
+			       size, error_out);
 }
 
 static int con_remove(int n)
@@ -146,7 +146,7 @@ static int uml_console_setup(struct console *co, char *options)
 {
 	struct line *line = &vts[co->index];
 
-	return console_open_chan(line,co,&opts);
+	return console_open_chan(line, co, &opts);
 }
 
 static struct console stdiocons = {
@@ -166,7 +166,7 @@ int stdio_init(void)
 	console_driver = line_register_devfs(&console_lines, &driver,
 					     &console_ops, vts,
 					     ARRAY_SIZE(vts));
-	if (NULL == console_driver)
+	if (console_driver == NULL)
 		return -1;
 	printk(KERN_INFO "Initialized stdio console driver\n");
 
@@ -178,7 +178,7 @@ int stdio_init(void)
 
 	con_init_done = 1;
 	register_console(&stdiocons);
-	return(0);
+	return 0;
 }
 late_initcall(stdio_init);
 
@@ -192,7 +192,7 @@ __uml_exitcall(console_exit);
 
 static int console_chan_setup(char *str)
 {
-	return(line_setup(vts, sizeof(vts)/sizeof(vts[0]), str, 1));
+	return line_setup(vts, sizeof(vts)/sizeof(vts[0]), str, 1);
 }
 __setup("con", console_chan_setup);
 __channel_help(console_chan_setup, "con");

arch/um/include/chan_kern.h

@@ -47,14 +47,3 @@ extern int chan_config_string(struct list_head *chans, char *str, int size,
 			      char **error_out);
 
 #endif
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only.  This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */

arch/um/include/line.h

@@ -78,7 +78,8 @@ extern int line_open(struct line *lines, struct tty_struct *tty,
 		     struct chan_opts *opts);
 extern int line_setup(struct line *lines, unsigned int sizeof_lines, char *init,
 		      int all_allowed);
-extern int line_write(struct tty_struct *tty, const unsigned char *buf, int len);
+extern int line_write(struct tty_struct *tty, const unsigned char *buf,
+		      int len);
 extern void line_put_char(struct tty_struct *tty, unsigned char ch);
 extern void line_set_termios(struct tty_struct *tty, struct termios * old);
 extern int line_chars_in_buffer(struct tty_struct *tty);
@@ -89,7 +90,8 @@ extern int line_ioctl(struct tty_struct *tty, struct file * file,
 		      unsigned int cmd, unsigned long arg);
 
 extern char *add_xterm_umid(char *base);
-extern int line_setup_irq(int fd, int input, int output, struct tty_struct *tty);
+extern int line_setup_irq(int fd, int input, int output,
+			  struct tty_struct *tty);
 extern void line_close_chan(struct line *line);
 extern void line_disable(struct tty_struct *tty, int current_irq);
 extern struct tty_driver * line_register_devfs(struct lines *set,
@@ -100,10 +102,12 @@ extern struct tty_driver * line_register_devfs(struct lines *set,
 extern void lines_init(struct line *lines, int nlines);
 extern void close_lines(struct line *lines, int nlines);
 
-extern int line_config(struct line *lines, unsigned int sizeof_lines, char *str);
+extern int line_config(struct line *lines, unsigned int sizeof_lines,
+		       char *str);
 extern int line_id(char **str, int *start_out, int *end_out);
 extern int line_remove(struct line *lines, unsigned int sizeof_lines, int n);
-extern int line_get_config(char *dev, struct line *lines, unsigned int sizeof_lines, char *str,
+extern int line_get_config(char *dev, struct line *lines,
+			   unsigned int sizeof_lines, char *str,
 			   int size, char **error_out);
 
 #endif

arch/um/os-Linux/aio.c

@@ -178,7 +178,7 @@ static int do_not_aio(struct aio_thread_req *req)
 		break;
 	}
 
- out:
+out:
 	return err;
 }
 
@@ -235,12 +235,12 @@ static int init_aio_24(void)
 	aio_pid = err;
 	goto out;
 
- out_close_pipe:
+out_close_pipe:
 	os_close_file(fds[0]);
 	os_close_file(fds[1]);
 	aio_req_fd_w = -1;
 	aio_req_fd_r = -1;
- out:
+out:
 #ifndef HAVE_AIO_ABI
 	printk("/usr/include/linux/aio_abi.h not present during build\n");
 #endif
@@ -332,8 +332,7 @@ static int init_aio(void)
 {
 	int err;
 
-        CHOOSE_MODE(({
-                if(!aio_24){
+	CHOOSE_MODE(({ if(!aio_24){
 			    printk("Disabling 2.6 AIO in tt mode\n");
 			    aio_24 = 1;
 		    } }), (void) 0);