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-rw-r--r--drivers/video/atmel_lcdfb.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/video/atmel_lcdfb.c b/drivers/video/atmel_lcdfb.c
index d38fd521742..f8d0a57a07c 100644
--- a/drivers/video/atmel_lcdfb.c
+++ b/drivers/video/atmel_lcdfb.c
@@ -372,6 +372,13 @@ static int atmel_lcdfb_check_var(struct fb_var_screeninfo *var,
var->transp.offset = var->transp.length = 0;
var->xoffset = var->yoffset = 0;
+ if (info->fix.smem_len) {
+ unsigned int smem_len = (var->xres_virtual * var->yres_virtual
+ * ((var->bits_per_pixel + 7) / 8));
+ if (smem_len > info->fix.smem_len)
+ return -EINVAL;
+ }
+
/* Saturate vertical and horizontal timings at maximum values */
var->vsync_len = min_t(u32, var->vsync_len,
(ATMEL_LCDC_VPW >> ATMEL_LCDC_VPW_OFFSET) + 1);