Commit 928e964f authored by Antonino A. Daplas's avatar Antonino A. Daplas Committed by Linus Torvalds
Browse files

[PATCH] vt: Honor the return value of device_create_file



Check the return value of device_create_file().  If return is 'fail', remove
attributes by calling device_remove_file().
Signed-off-by: default avatarAntonino Daplas <adaplas@pol.net>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 212f2639
......@@ -106,7 +106,8 @@
#define MAX_NR_CON_DRIVER 16
#define CON_DRIVER_FLAG_MODULE 1
#define CON_DRIVER_FLAG_INIT 2
#define CON_DRIVER_FLAG_INIT 2
#define CON_DRIVER_FLAG_ATTR 4
struct con_driver {
const struct consw *con;
......@@ -3070,22 +3071,37 @@ static struct class_device_attribute class_device_attrs[] = {
static int vtconsole_init_class_device(struct con_driver *con)
{
int i;
int error = 0;
con->flag |= CON_DRIVER_FLAG_ATTR;
class_set_devdata(con->class_dev, con);
for (i = 0; i < ARRAY_SIZE(class_device_attrs); i++)
class_device_create_file(con->class_dev,
for (i = 0; i < ARRAY_SIZE(class_device_attrs); i++) {
error = class_device_create_file(con->class_dev,
&class_device_attrs[i]);
if (error)
break;
}
return 0;
if (error) {
while (--i >= 0)
class_device_remove_file(con->class_dev,
&class_device_attrs[i]);
con->flag &= ~CON_DRIVER_FLAG_ATTR;
}
return error;
}
static void vtconsole_deinit_class_device(struct con_driver *con)
{
int i;
for (i = 0; i < ARRAY_SIZE(class_device_attrs); i++)
class_device_remove_file(con->class_dev,
&class_device_attrs[i]);
if (con->flag & CON_DRIVER_FLAG_ATTR) {
for (i = 0; i < ARRAY_SIZE(class_device_attrs); i++)
class_device_remove_file(con->class_dev,
&class_device_attrs[i]);
con->flag &= ~CON_DRIVER_FLAG_ATTR;
}
}
/**
......@@ -3184,6 +3200,7 @@ int register_con_driver(const struct consw *csw, int first, int last)
} else {
vtconsole_init_class_device(con_driver);
}
err:
release_console_sem();
module_put(owner);
......
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