7 files changed, 32 insertions, 12 deletions

diff --git a/drivers/char/vt.c b/drivers/char/vt.c
index edb7002a3216..0d56f8fc105c 100644
--- a/drivers/char/vt.c
+++ b/drivers/char/vt.c
@@ -750,13 +750,15 @@ int vc_allocate(unsigned int currcons)	/* return 0 on success */
         return 0;
 }
 
-static inline int resize_screen(struct vc_data *vc, int width, int height)
+static inline int resize_screen(struct vc_data *vc, int width, int height,
+                                int user)
 {
         /* Resizes the resolution of the display adapater */
         int err = 0;
 
         if (vc->vc_mode != KD_GRAPHICS && vc->vc_sw->con_resize)
-                err = vc->vc_sw->con_resize(vc, width, height);
+                err = vc->vc_sw->con_resize(vc, width, height, user);
+
         return err;
 }
 
@@ -772,7 +774,7 @@ int vc_resize(struct vc_data *vc, unsigned int cols, unsigned int lines)
         unsigned long old_origin, new_origin, new_scr_end, rlth, rrem, err = 0;
         unsigned int old_cols, old_rows, old_row_size, old_screen_size;
         unsigned int new_cols, new_rows, new_row_size, new_screen_size;
-        unsigned int end;
+        unsigned int end, user;
         unsigned short *newscreen;
 
         WARN_CONSOLE_UNLOCKED();
@@ -780,6 +782,9 @@ int vc_resize(struct vc_data *vc, unsigned int cols, unsigned int lines)
         if (!vc)
                 return -ENXIO;
 
+        user = vc->vc_resize_user;
+        vc->vc_resize_user = 0;
+
         if (cols > VC_RESIZE_MAXCOL || lines > VC_RESIZE_MAXROW)
                 return -EINVAL;
 
@@ -800,7 +805,7 @@ int vc_resize(struct vc_data *vc, unsigned int cols, unsigned int lines)
         old_row_size = vc->vc_size_row;
         old_screen_size = vc->vc_screenbuf_size;
 
-        err = resize_screen(vc, new_cols, new_rows);
+        err = resize_screen(vc, new_cols, new_rows, user);
         if (err) {
                 kfree(newscreen);
                 return err;
diff --git a/drivers/char/vt_ioctl.c b/drivers/char/vt_ioctl.c
index 7a61a2a9aafe..f69a8258095c 100644
--- a/drivers/char/vt_ioctl.c
+++ b/drivers/char/vt_ioctl.c
@@ -847,14 +847,24 @@ int vt_ioctl(struct tty_struct *tty, struct file * file,
         case VT_RESIZE:
         {
                 struct vt_sizes __user *vtsizes = up;
+                struct vc_data *vc;
+
                 ushort ll,cc;
                 if (!perm)
                         return -EPERM;
                 if (get_user(ll, &vtsizes->v_rows) ||
                     get_user(cc, &vtsizes->v_cols))
                         return -EFAULT;
-                for (i = 0; i < MAX_NR_CONSOLES; i++)
-                        vc_lock_resize(vc_cons[i].d, cc, ll);
+
+                for (i = 0; i < MAX_NR_CONSOLES; i++) {
+                        vc = vc_cons[i].d;
+
+                        if (vc) {
+                                vc->vc_resize_user = 1;
+                                vc_lock_resize(vc_cons[i].d, cc, ll);
+                        }
+                }
+
                 return 0;
         }
 
@@ -900,6 +910,7 @@ int vt_ioctl(struct tty_struct *tty, struct file * file,
                                 vc_cons[i].d->vc_scan_lines = vlin;
                         if (clin)
                                 vc_cons[i].d->vc_font.height = clin;
+                        vc_cons[i].d->vc_resize_user = 1;
                         vc_resize(vc_cons[i].d, cc, ll);
                         release_console_sem();
                 }
diff --git a/drivers/usb/misc/sisusbvga/sisusb_con.c b/drivers/usb/misc/sisusbvga/sisusb_con.c
index 43722e5a49d1..b624320df903 100644
--- a/drivers/usb/misc/sisusbvga/sisusb_con.c
+++ b/drivers/usb/misc/sisusbvga/sisusb_con.c
@@ -1042,7 +1042,8 @@ sisusbcon_set_origin(struct vc_data *c)
 
 /* Interface routine */
 static int
-sisusbcon_resize(struct vc_data *c, unsigned int newcols, unsigned int newrows)
+sisusbcon_resize(struct vc_data *c, unsigned int newcols, unsigned int newrows,
+                 unsigned int user)
 {
         struct sisusb_usb_data *sisusb;
         int fh;
diff --git a/drivers/video/console/fbcon.c b/drivers/video/console/fbcon.c
index 6d0dcde66eb4..97a0224a0cf0 100644
--- a/drivers/video/console/fbcon.c
+++ b/drivers/video/console/fbcon.c
@@ -2168,7 +2168,7 @@ static __inline__ void updatescrollmode(struct display *p,
 }
 
 static int fbcon_resize(struct vc_data *vc, unsigned int width, 
-                        unsigned int height)
+                        unsigned int height, unsigned int user)
 {
         struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
         struct fbcon_ops *ops = info->fbcon_par;
diff --git a/drivers/video/console/vgacon.c b/drivers/video/console/vgacon.c
index d18b73aafa0d..e9afb7ebd566 100644
--- a/drivers/video/console/vgacon.c
+++ b/drivers/video/console/vgacon.c
@@ -1278,13 +1278,14 @@ static int vgacon_font_get(struct vc_data *c, struct console_font *font)
 #endif
 
 static int vgacon_resize(struct vc_data *c, unsigned int width,
-                                unsigned int height)
+                         unsigned int height, unsigned int user)
 {
         if (width % 2 || width > ORIG_VIDEO_COLS ||
             height > (ORIG_VIDEO_LINES * vga_default_font_height)/
             c->vc_font.height)
-                /* let svgatextmode tinker with video timings */
-                return 0;
+                /* let svgatextmode tinker with video timings and
+                   return success */
+                return (user) ? 0 : -EINVAL;
 
         if (CON_IS_VISIBLE(c) && !vga_is_gfx) /* who knows */
                 vgacon_doresize(c, width, height);
diff --git a/include/linux/console.h b/include/linux/console.h
index 56a7bcda49cb..0a4542ddb73d 100644
--- a/include/linux/console.h
+++ b/include/linux/console.h
@@ -45,7 +45,8 @@ struct consw {
         int     (*con_font_get)(struct vc_data *, struct console_font *);
         int     (*con_font_default)(struct vc_data *, struct console_font *, char *);
         int     (*con_font_copy)(struct vc_data *, int);
-        int     (*con_resize)(struct vc_data *, unsigned int, unsigned int);
+        int     (*con_resize)(struct vc_data *, unsigned int, unsigned int,
+                               unsigned int);
         int     (*con_set_palette)(struct vc_data *, unsigned char *);
         int     (*con_scrolldelta)(struct vc_data *, int);
         int     (*con_set_origin)(struct vc_data *);
diff --git a/include/linux/console_struct.h b/include/linux/console_struct.h
index dc77fed7b285..d71f7c0f931b 100644
--- a/include/linux/console_struct.h
+++ b/include/linux/console_struct.h
@@ -100,6 +100,7 @@ struct vc_data {
         unsigned char   vc_G1_charset;
         unsigned char   vc_saved_G0;
         unsigned char   vc_saved_G1;
+        unsigned int    vc_resize_user;         /* resize request from user */
         unsigned int    vc_bell_pitch;          /* Console bell pitch */
         unsigned int    vc_bell_duration;       /* Console bell duration */
         struct vc_data **vc_display_fg;         /* [!] Ptr to var holding fg console for this display */