um: get rid of the init_prio mess
make line_setup() act on a separate array of conf strings + default conf,
have lines array initialized explicitly by that data, bury LINE_INIT()
macro from hell.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>
diff --git a/arch/um/drivers/line.c b/arch/um/drivers/line.c
index b0022cf..3eea99e 100644
--- a/arch/um/drivers/line.c
+++ b/arch/um/drivers/line.c
@@ -489,7 +489,7 @@
close_chan(&lines[i].chan_list, 0);
}
-static int setup_one_line(struct line *lines, int n, char *init, int init_prio,
+static int setup_one_line(struct line *lines, int n, char *init,
char **error_out)
{
struct line *line = &lines[n];
@@ -502,14 +502,11 @@
goto out;
}
- if (line->init_pri <= init_prio) {
- line->init_pri = init_prio;
- if (!strcmp(init, "none"))
- line->valid = 0;
- else {
- line->init_str = init;
- line->valid = 1;
- }
+ if (!strcmp(init, "none"))
+ line->valid = 0;
+ else {
+ line->init_str = init;
+ line->valid = 1;
}
err = 0;
out:
@@ -524,47 +521,37 @@
* @error_out is an error string in the case of failure;
*/
-int line_setup(struct line *lines, unsigned int num, char *init,
- char **error_out)
+int line_setup(char **conf, unsigned int num, char **def,
+ char *init, char *name)
{
- int i, n, err;
- char *end;
+ char *error;
if (*init == '=') {
/*
* We said con=/ssl= instead of con#=, so we are configuring all
* consoles at once.
*/
- n = -1;
- }
- else {
- n = simple_strtoul(init, &end, 0);
- if (*end != '=') {
- *error_out = "Couldn't parse device number";
- return -EINVAL;
- }
- init = end;
- }
- init++;
+ *def = init + 1;
+ } else {
+ char *end;
+ unsigned n = simple_strtoul(init, &end, 0);
- if (n >= (signed int) num) {
- *error_out = "Device number out of range";
- return -EINVAL;
- }
- else if (n >= 0) {
- err = setup_one_line(lines, n, init, INIT_ONE, error_out);
- if (err)
- return err;
- }
- else {
- for(i = 0; i < num; i++) {
- err = setup_one_line(lines, i, init, INIT_ALL,
- error_out);
- if (err)
- return err;
+ if (*end != '=') {
+ error = "Couldn't parse device number";
+ goto out;
}
+ if (n >= num) {
+ error = "Device number out of range";
+ goto out;
+ }
+ conf[n] = end + 1;
}
- return n == -1 ? num : n;
+ return 0;
+
+out:
+ printk(KERN_ERR "Failed to set up %s with "
+ "configuration string \"%s\" : %s\n", name, init, error);
+ return -EINVAL;
}
int line_config(struct line *lines, unsigned int num, char *str,
@@ -595,7 +582,7 @@
*error_out = "Failed to allocate memory";
return -ENOMEM;
}
- err = setup_one_line(lines, n, new, INIT_ONE, error_out);
+ err = setup_one_line(lines, n, new, error_out);
if (err)
return err;
line = &lines[n];
@@ -654,7 +641,7 @@
*error_out = "Device number out of range";
return -EINVAL;
}
- return setup_one_line(lines, n, "none", INIT_ONE, error_out);
+ return setup_one_line(lines, n, "none", error_out);
}
struct tty_driver *register_lines(struct line_driver *line_driver,
diff --git a/arch/um/drivers/line.h b/arch/um/drivers/line.h
index 63df3ca..0c4dadf5 100644
--- a/arch/um/drivers/line.h
+++ b/arch/um/drivers/line.h
@@ -37,7 +37,6 @@
int valid;
char *init_str;
- int init_pri;
struct list_head chan_list;
/*This lock is actually, mostly, local to*/
@@ -58,18 +57,10 @@
int have_irq;
};
-#define LINE_INIT(str, d) \
- { .count_lock = __SPIN_LOCK_UNLOCKED((str).count_lock), \
- .init_str = str, \
- .init_pri = INIT_STATIC, \
- .valid = 1, \
- .lock = __SPIN_LOCK_UNLOCKED((str).lock), \
- .driver = d }
-
extern void line_close(struct tty_struct *tty, struct file * filp);
extern int line_open(struct line *lines, struct tty_struct *tty);
-extern int line_setup(struct line *lines, unsigned int sizeof_lines,
- char *init, char **error_out);
+extern int line_setup(char **conf, unsigned nlines, char **def,
+ char *init, char *name);
extern int line_write(struct tty_struct *tty, const unsigned char *buf,
int len);
extern int line_put_char(struct tty_struct *tty, unsigned char ch);
diff --git a/arch/um/drivers/ssl.c b/arch/um/drivers/ssl.c
index 9d8c20a..445288f 100644
--- a/arch/um/drivers/ssl.c
+++ b/arch/um/drivers/ssl.c
@@ -71,8 +71,9 @@
/* The array is initialized by line_init, at initcall time. The
* elements are locked individually as needed.
*/
-static struct line serial_lines[NR_PORTS] =
- { [0 ... NR_PORTS - 1] = LINE_INIT(CONFIG_SSL_CHAN, &driver) };
+static char *conf[NR_PORTS];
+static char *def_conf = CONFIG_SSL_CHAN;
+static struct line serial_lines[NR_PORTS];
static int ssl_config(char *str, char **error_out)
{
@@ -186,9 +187,23 @@
static int ssl_init(void)
{
char *new_title;
+ int i;
printk(KERN_INFO "Initializing software serial port version %d\n",
ssl_version);
+
+ for (i = 0; i < NR_PORTS; i++) {
+ char *s = conf[i];
+ if (!s)
+ s = def_conf;
+ if (s && strcmp(s, "none") != 0) {
+ serial_lines[i].init_str = s;
+ serial_lines[i].valid = 1;
+ }
+ spin_lock_init(&serial_lines[i].lock);
+ spin_lock_init(&serial_lines[i].count_lock);
+ serial_lines[i].driver = &driver;
+ }
ssl_driver = register_lines(&driver, &ssl_ops, serial_lines,
ARRAY_SIZE(serial_lines));
@@ -214,14 +229,7 @@
static int ssl_chan_setup(char *str)
{
- char *error;
- int ret;
-
- ret = line_setup(serial_lines, ARRAY_SIZE(serial_lines), str, &error);
- if(ret < 0)
- printk(KERN_ERR "Failed to set up serial line with "
- "configuration string \"%s\" : %s\n", str, error);
-
+ line_setup(conf, NR_PORTS, &def_conf, str, "serial line");
return 1;
}
diff --git a/arch/um/drivers/stdio_console.c b/arch/um/drivers/stdio_console.c
index 088776f..6d244f4 100644
--- a/arch/um/drivers/stdio_console.c
+++ b/arch/um/drivers/stdio_console.c
@@ -76,9 +76,9 @@
/* The array is initialized by line_init, at initcall time. The
* elements are locked individually as needed.
*/
-static struct line vts[MAX_TTYS] = { LINE_INIT(CONFIG_CON_ZERO_CHAN, &driver),
- [ 1 ... MAX_TTYS - 1 ] =
- LINE_INIT(CONFIG_CON_CHAN, &driver) };
+static char *vt_conf[MAX_TTYS];
+static char *def_conf;
+static struct line vts[MAX_TTYS];
static int con_config(char *str, char **error_out)
{
@@ -160,7 +160,22 @@
static int stdio_init(void)
{
char *new_title;
+ int i;
+ for (i = 0; i < MAX_TTYS; i++) {
+ char *s = vt_conf[i];
+ if (!s)
+ s = def_conf;
+ if (!s)
+ s = i ? CONFIG_CON_CHAN : CONFIG_CON_ZERO_CHAN;
+ if (s && strcmp(s, "none") != 0) {
+ vts[i].init_str = s;
+ vts[i].valid = 1;
+ }
+ spin_lock_init(&vts[i].lock);
+ spin_lock_init(&vts[i].count_lock);
+ vts[i].driver = &driver;
+ }
console_driver = register_lines(&driver, &console_ops, vts,
ARRAY_SIZE(vts));
if (console_driver == NULL)
@@ -189,14 +204,7 @@
static int console_chan_setup(char *str)
{
- char *error;
- int ret;
-
- ret = line_setup(vts, ARRAY_SIZE(vts), str, &error);
- if(ret < 0)
- printk(KERN_ERR "Failed to set up console with "
- "configuration string \"%s\" : %s\n", str, error);
-
+ line_setup(vt_conf, MAX_TTYS, &def_conf, str, "console");
return 1;
}
__setup("con", console_chan_setup);