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[PATCH] uml: move console configuration 

This patch changes when console devices are configured in order to prepare the
ground for the next patch.

parse_chan_pair is now done earlier, when initcalls are run, rather than when
the device is opened.

When a host device disappears, the channel list is closed, but not freed.
This is required by the previous change.  line_config now takes the options
structure as an argument, and line_open doesn't.

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>
This commit is contained in:
Jeff Dike 2006-01-06 00:18:55 -08:00 committed by Linus Torvalds
parent 418e55d49b
commit 1f80171e81
5 changed files with 35 additions and 32 deletions
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14
arch/um/drivers/chan_kern.c
View File

@ -311,14 +311,12 @@ int console_write_chan(struct list_head *chans, const char *buf, int len)
int console_open_chan(struct line *line, struct console *co,
struct chan_opts *opts)
{
if (!list_empty(&line->chan_list))
return 0;
int err;
err = open_chan(&line->chan_list);
if(err)
return err;
if (0 != parse_chan_pair(line->init_str, &line->chan_list,
co->index, opts))
return -1;
if (0 != open_chan(&line->chan_list))
return -1;
printk("Console initialized on /dev/%s%d\n",co->name,co->index);
return 0;
}
@ -596,13 +594,11 @@ void chan_interrupt(struct list_head *chans, struct work_struct *task,
tty_hangup(tty);
line_disable(tty, irq);
close_chan(chans);
free_chan(chans);
return;
}
else {
if(chan->ops->close != NULL)
chan->ops->close(chan->fd, chan->data);
free_one_chan(chan);
}
}
}

34
arch/um/drivers/line.c
View File

@ -419,8 +419,7 @@ void line_disable(struct tty_struct *tty, int current_irq)
line->have_irq = 0;
}
int line_open(struct line *lines, struct tty_struct *tty,
struct chan_opts *opts)
int line_open(struct line *lines, struct tty_struct *tty)
{
struct line *line;
int err = 0;
@ -436,13 +435,11 @@ int line_open(struct line *lines, struct tty_struct *tty,
err = -ENODEV;
goto out;
}
if (list_empty(&line->chan_list)) {
err = parse_chan_pair(line->init_str, &line->chan_list,
tty->index, opts);
if(err) goto out;
err = open_chan(&line->chan_list);
if(err) goto out;
}
err = open_chan(&line->chan_list);
if(err)
goto out;
/* Here the interrupt is registered.*/
enable_chan(&line->chan_list, tty);
INIT_WORK(&line->task, line_timer_cb, tty);
@ -558,8 +555,10 @@ int line_setup(struct line *lines, unsigned int num, char *init)
return n == -1 ? num : n;
}
int line_config(struct line *lines, unsigned int num, char *str)
int line_config(struct line *lines, unsigned int num, char *str,
struct chan_opts *opts)
{
struct line *line;
char *new;
int n;
@ -572,10 +571,14 @@ int line_config(struct line *lines, unsigned int num, char *str)
new = kstrdup(str, GFP_KERNEL);
if(new == NULL){
printk("line_config - kstrdup failed\n");
return -ENOMEM;
return 1;
}
n = line_setup(lines, num, new);
return n < 0 ? n : 0;
if(n < 0)
return 1;
line = &lines[n];
return parse_chan_pair(line->init_str, &line->chan_list, n, opts);
}
int line_get_config(char *name, struct line *lines, unsigned int num, char *str,
@ -677,7 +680,7 @@ struct tty_driver *line_register_devfs(struct lines *set,
static DEFINE_SPINLOCK(winch_handler_lock);
static LIST_HEAD(winch_handlers);
void lines_init(struct line *lines, int nlines)
void lines_init(struct line *lines, int nlines, struct chan_opts *opts)
{
struct line *line;
int i;
@ -692,6 +695,11 @@ void lines_init(struct line *lines, int nlines)
line->init_str = kstrdup(line->init_str, GFP_KERNEL);
if(line->init_str == NULL)
printk("lines_init - kstrdup returned NULL\n");
if(parse_chan_pair(line->init_str, &line->chan_list, i, opts)){
printk("parse_chan_pair failed for device %d\n", i);
line->valid = 0;
}
}
}

6
arch/um/drivers/ssl.c
View File

@ -84,7 +84,7 @@ static struct lines lines = LINES_INIT(NR_PORTS);
static int ssl_config(char *str)
{
return line_config(serial_lines, ARRAY_SIZE(serial_lines), str);
return line_config(serial_lines, ARRAY_SIZE(serial_lines), str, &opts);
}
static int ssl_get_config(char *dev, char *str, int size, char **error_out)
@ -100,7 +100,7 @@ static int ssl_remove(int n)
int ssl_open(struct tty_struct *tty, struct file *filp)
{
return line_open(serial_lines, tty, &opts);
return line_open(serial_lines, tty);
}
#if 0
@ -202,7 +202,7 @@ int ssl_init(void)
serial_lines,
ARRAY_SIZE(serial_lines));
lines_init(serial_lines, ARRAY_SIZE(serial_lines));
lines_init(serial_lines, ARRAY_SIZE(serial_lines), &opts);
new_title = add_xterm_umid(opts.xterm_title);
if (new_title != NULL)

6
arch/um/drivers/stdio_console.c
View File

@ -91,7 +91,7 @@ struct line vts[MAX_TTYS] = { LINE_INIT(CONFIG_CON_ZERO_CHAN, &driver),
static int con_config(char *str)
{
return line_config(vts, ARRAY_SIZE(vts), str);
return line_config(vts, ARRAY_SIZE(vts), str, &opts);
}
static int con_get_config(char *dev, char *str, int size, char **error_out)
@ -106,7 +106,7 @@ static int con_remove(int n)
static int con_open(struct tty_struct *tty, struct file *filp)
{
return line_open(vts, tty, &opts);
return line_open(vts, tty);
}
static int con_init_done = 0;
@ -169,7 +169,7 @@ int stdio_init(void)
return -1;
printk(KERN_INFO "Initialized stdio console driver\n");
lines_init(vts, ARRAY_SIZE(vts));
lines_init(vts, ARRAY_SIZE(vts), &opts);
new_title = add_xterm_umid(opts.xterm_title);
if(new_title != NULL)

7
arch/um/include/line.h
View File

@ -74,8 +74,7 @@ struct lines {
#define LINES_INIT(n) { num : n }
extern void line_close(struct tty_struct *tty, struct file * filp);
extern int line_open(struct line *lines, struct tty_struct *tty,
struct chan_opts *opts);
extern int line_open(struct line *lines, struct tty_struct *tty);
extern int line_setup(struct line *lines, unsigned int sizeof_lines,
char *init);
extern int line_write(struct tty_struct *tty, const unsigned char *buf,
@ -99,11 +98,11 @@ extern struct tty_driver * line_register_devfs(struct lines *set,
struct tty_operations *driver,
struct line *lines,
int nlines);
extern void lines_init(struct line *lines, int nlines);
extern void lines_init(struct line *lines, int nlines, struct chan_opts *opts);
extern void close_lines(struct line *lines, int nlines);
extern int line_config(struct line *lines, unsigned int sizeof_lines,
char *str);
char *str, struct chan_opts *opts);
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,