From 4acb4d391f005c0c72f7b84041b3884e4260a5a4 Mon Sep 17 00:00:00 2001
From: Eric Nelson <eric.nelson@boundarydevices.com>
Date: Fri, 26 Jul 2013 17:53:45 -0700
Subject: [PATCH] mxc_ipuv3: fix memory alignment of framebuffer
The frame-buffer on i.MX boards needs to be aligned for DMA.
Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>
---
drivers/video/mxc_ipuv3_fb.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/video/mxc_ipuv3_fb.c b/drivers/video/mxc_ipuv3_fb.c
index ace226cece..d922d5d099 100644
--- a/drivers/video/mxc_ipuv3_fb.c
+++ b/drivers/video/mxc_ipuv3_fb.c
@@ -415,8 +415,9 @@ static int mxcfb_map_video_memory(struct fb_info *fbi)
fbi->fix.smem_len = fbi->var.yres_virtual *
fbi->fix.line_length;
}
-
- fbi->screen_base = (char *)malloc(fbi->fix.smem_len);
+ fbi->fix.smem_len = roundup(fbi->fix.smem_len, ARCH_DMA_MINALIGN);
+ fbi->screen_base = (char *)memalign(ARCH_DMA_MINALIGN,
+ fbi->fix.smem_len);
fbi->fix.smem_start = (unsigned long)fbi->screen_base;
if (fbi->screen_base == 0) {
puts("Unable to allocate framebuffer memory\n");
--
2.39.5