atmel_lcdfb: don't initialize a pre-allocated framebuffer

[linux-2.6-omap-h63xx.git] / arch / arm / mach-at91 / at91sam9261_devices.c

diff --git a/arch/arm/mach-at91/at91sam9261_devices.c b/arch/arm/mach-at91/at91sam9261_devices.c
index 37cd547855b1baa5dbd894b3942c35d5cebbd5cd..728bb8f394415fc683d3e8b4620cdaec984992a8 100644 (file)
--- a/arch/arm/mach-at91/at91sam9261_devices.c
+++ b/arch/arm/mach-at91/at91sam9261_devices.c
@@ -539,6 +539,17 @@ void __init at91_add_device_lcdc(struct atmel_lcdfb_info *data)
        at91_set_B_periph(AT91_PIN_PB28, 0);    /* LCDD23 */
 #endif
 
+       if (ARRAY_SIZE(lcdc_resources) > 2) {
+               void __iomem *fb;
+               struct resource *fb_res = &lcdc_resources[2];
+               size_t fb_len = fb_res->end - fb_res->start + 1;
+
+               fb = ioremap_writecombine(fb_res->start, fb_len);
+               if (fb) {
+                       memset(fb, 0, fb_len);
+                       iounmap(fb, fb_len);
+               }
+       }
        lcdc_data = *data;
        platform_device_register(&at91_lcdc_device);
 }