X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?p=pandora-kernel.git;a=blobdiff_plain;f=drivers%2Fchar%2Fvt.c;h=8e4413f6fbaf6145352ffb5e7c9af0530240cc79;hp=0fca83ededff3eef49ae281790d8e76a77f8ab0f;hb=6ebfc0e20b409f13e62bbb84ce70102b49945cfd;hpb=d4328b40af16bae62ff8f854060d33daad237093

diff --git a/drivers/char/vt.c b/drivers/char/vt.c
index 0fca83ededff..8e4413f6fbaf 100644
--- a/drivers/char/vt.c
+++ b/drivers/char/vt.c
@@ -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;
@@ -138,14 +139,6 @@ const struct consw *conswitchp;
 extern void vcs_make_sysfs(struct tty_struct *tty);
 extern void vcs_remove_sysfs(struct tty_struct *tty);
 
-extern void console_map_init(void);
-#ifdef CONFIG_PROM_CONSOLE
-extern void prom_con_init(void);
-#endif
-#ifdef CONFIG_MDA_CONSOLE
-extern int mda_console_init(void);
-#endif
-
 struct vc vc_cons [MAX_NR_CONSOLES];
 
 #ifndef VT_SINGLE_DRIVER
@@ -737,7 +730,8 @@ int vc_allocate(unsigned int currcons)	/* return 0 on success */
 	    visual_init(vc, currcons, 1);
 	    if (!*vc->vc_uni_pagedir_loc)
 		con_set_default_unimap(vc);
-	    vc->vc_screenbuf = kmalloc(vc->vc_screenbuf_size, GFP_KERNEL);
+	    if (!vc->vc_kmalloced)
+		vc->vc_screenbuf = kmalloc(vc->vc_screenbuf_size, GFP_KERNEL);
 	    if (!vc->vc_screenbuf) {
 		kfree(vc);
 		vc_cons[currcons].d = NULL;
@@ -885,14 +879,24 @@ int vc_resize(struct vc_data *vc, unsigned int cols, unsigned int lines)
 	return err;
 }
 
+int vc_lock_resize(struct vc_data *vc, unsigned int cols, unsigned int lines)
+{
+	int rc;
 
-void vc_disallocate(unsigned int currcons)
+	acquire_console_sem();
+	rc = vc_resize(vc, cols, lines);
+	release_console_sem();
+	return rc;
+}
+
+void vc_deallocate(unsigned int currcons)
 {
 	WARN_CONSOLE_UNLOCKED();
 
 	if (vc_cons_allocated(currcons)) {
 		struct vc_data *vc = vc_cons[currcons].d;
 		vc->vc_sw->con_deinit(vc);
+		put_pid(vc->vt_pid);
 		module_put(vc->vc_sw->owner);
 		if (vc->vc_kmalloced)
 			kfree(vc->vc_screenbuf);
@@ -2664,7 +2668,7 @@ static int __init con_init(void)
 }
 console_initcall(con_init);
 
-static struct tty_operations con_ops = {
+static const struct tty_operations con_ops = {
 	.open = con_open,
 	.close = con_close,
 	.write = con_write,
@@ -3059,22 +3063,37 @@ 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;
+	}
 }
 
 /**
@@ -3173,6 +3192,7 @@ 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);
@@ -3790,6 +3810,7 @@ EXPORT_SYMBOL(default_blu);
 EXPORT_SYMBOL(update_region);
 EXPORT_SYMBOL(redraw_screen);
 EXPORT_SYMBOL(vc_resize);
+EXPORT_SYMBOL(vc_lock_resize);
 EXPORT_SYMBOL(fg_console);
 EXPORT_SYMBOL(console_blank_hook);
 EXPORT_SYMBOL(console_blanked);