The frame-buffer on i.MX boards needs to be aligned for DMA.
Signed-off-by: Eric Nelson eric.nelson@boundarydevices.com --- Changes in v2: Also round smem_len up to ARCH_DMA_MINALIGN
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 ace226c..d922d5d 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");