video: s3c-fb: fix virtual resolution checking

This patch fixes mishandling in virtual resolution checking.
Previously, virtual resolution is changed to virtual_x and virtual_y
which mean the size for buffer allocation, when s3c_fb_check_var is
called by fb_check_var. However, it is meaningless, since virtual_x
and virtual_y are fixed and user cannot change virtual resolution.
Therefore, virtual resolution should be more than resolution
such as xres and yres.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 2 insertions, 3 deletions

diff --git a/drivers/video/s3c-fb.c b/drivers/video/s3c-fb.c
index 148e19dbdbc5..dfc2b64dde25 100644
--- a/drivers/video/s3c-fb.c
+++ b/drivers/video/s3c-fb.c
@@ -235,13 +235,12 @@ static int s3c_fb_check_var(struct fb_var_screeninfo *var,
                             struct fb_info *info)
 {
         struct s3c_fb_win *win = info->par;
-        struct s3c_fb_pd_win *windata = win->windata;
         struct s3c_fb *sfb = win->parent;
 
         dev_dbg(sfb->dev, "checking parameters\n");
 
-        var->xres_virtual = max((unsigned int)windata->virtual_x, var->xres);
-        var->yres_virtual = max((unsigned int)windata->virtual_y, var->yres);
+        var->xres_virtual = max(var->xres_virtual, var->xres);
+        var->yres_virtual = max(var->yres_virtual, var->yres);
 
         if (!s3c_fb_validate_win_bpp(win, var->bits_per_pixel)) {
                 dev_dbg(sfb->dev, "win %d: unsupported bpp %d\n",