AUO-K190x: make memory check in check_var more flexible

Use only information from the new var to calculate the amount
of memory needed.

Signed-off-by: Heiko Stübner <heiko@sntech.de>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

1 files changed, 7 insertions, 3 deletions

diff --git a/drivers/video/auo_k190x.c b/drivers/video/auo_k190x.c
index 17f8d099b177..e078e20d4ad6 100644
--- a/drivers/video/auo_k190x.c
+++ b/drivers/video/auo_k190x.c
@@ -376,6 +376,9 @@ static void auok190xfb_imageblit(struct fb_info *info,
 static int auok190xfb_check_var(struct fb_var_screeninfo *var,
                                    struct fb_info *info)
 {
+        struct device *dev = info->device;
+        int size;
+
         if (info->var.xres != var->xres || info->var.yres != var->yres ||
             info->var.xres_virtual != var->xres_virtual ||
             info->var.yres_virtual != var->yres_virtual) {
@@ -388,9 +391,10 @@ static int auok190xfb_check_var(struct fb_var_screeninfo *var,
          *  Memory limit
          */
 
-        if ((info->fix.line_length * var->yres_virtual) > info->fix.smem_len) {
-                pr_info("%s: Memory Limit requested yres_virtual = %u\n",
-                         __func__, var->yres_virtual);
+        size = var->xres_virtual * var->yres_virtual * var->bits_per_pixel / 8;
+        if (size > info->fix.smem_len) {
+                dev_err(dev, "Memory limit exceeded, requested %dK\n",
+                        size >> 10);
                 return -ENOMEM;
         }