[U-Boot] [PATCH] video: mxc_ipuv3: fix memory alignment of framebuffer

Eric Nelson eric.nelson at boundarydevices.com
Fri Jul 26 02:35:26 CEST 2013


The frame-buffer on i.MX boards needs to be aligned for DMA.

Signed-off-by: Eric Nelson <eric.nelson at boundarydevices.com>
---
 drivers/video/mxc_ipuv3_fb.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/video/mxc_ipuv3_fb.c b/drivers/video/mxc_ipuv3_fb.c
index ace226c..ad95831 100644
--- a/drivers/video/mxc_ipuv3_fb.c
+++ b/drivers/video/mxc_ipuv3_fb.c
@@ -416,7 +416,8 @@ static int mxcfb_map_video_memory(struct fb_info *fbi)
 				    fbi->fix.line_length;
 	}
 
-	fbi->screen_base = (char *)malloc(fbi->fix.smem_len);
+	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");
-- 
1.8.1.2



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