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path: root/recipes/linux/linux-2.6.18/lcdc-do-not-clear-mem-if-fbmem_start-is-set.patch
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Diffstat (limited to 'recipes/linux/linux-2.6.18/lcdc-do-not-clear-mem-if-fbmem_start-is-set.patch')
-rw-r--r--recipes/linux/linux-2.6.18/lcdc-do-not-clear-mem-if-fbmem_start-is-set.patch16
1 files changed, 16 insertions, 0 deletions
diff --git a/recipes/linux/linux-2.6.18/lcdc-do-not-clear-mem-if-fbmem_start-is-set.patch b/recipes/linux/linux-2.6.18/lcdc-do-not-clear-mem-if-fbmem_start-is-set.patch
new file mode 100644
index 0000000000..b354047f60
--- /dev/null
+++ b/recipes/linux/linux-2.6.18/lcdc-do-not-clear-mem-if-fbmem_start-is-set.patch
@@ -0,0 +1,16 @@
+Index: linux-2.6.18/drivers/video/sidsafb.c
+===================================================================
+--- linux-2.6.18.orig/drivers/video/sidsafb.c 2006-12-20 13:43:17.000000000 +0100
++++ linux-2.6.18/drivers/video/sidsafb.c 2006-12-20 13:46:44.000000000 +0100
+@@ -765,7 +765,10 @@
+ printk("fb%d: Atmel LCDC at 0x%08lx (mapped at %p), irq %lu\n",
+ info->node, info->fix.mmio_start, sinfo->regs, sinfo->irq_base);
+
+- memset_io(info->screen_base, 0, info->fix.smem_len);
++ /* Only clear framebuffer if fbmem_start was not declared, assume the
++ * user have filled the framebuffer before the kernel was started. */
++ if (!fb_data->fbmem_start)
++ memset_io(info->screen_base, 0, info->fix.smem_len);
+ info->var.activate |= FB_ACTIVATE_FORCE | FB_ACTIVATE_NOW;
+ ret = fb_set_var(info, &info->var);
+ if (ret)