From: Satish Kumar Nagireddy <satish.nagireddy.nagireddy@xilinx.com>
Date: Wed, 7 Mar 2018 01:49:42 +0000 (-0800)
Subject: v4l: xilinx: dma: Fix bytes per line calculation
X-Git-Tag: xilinx-v2018.1~94
X-Git-Url: https://rtime.felk.cvut.cz/gitweb/zynq/linux.git/commitdiff_plain/e240fe145b5b08aeaa268c6db007f43c49fc79ba

v4l: xilinx: dma: Fix bytes per line calculation

In current implementation there is a bug where min_bpl value
is not satisfying dma alignment. This patch will fix the issue
by aligning the value properly.

Signed-off-by: Satish Kumar Nagireddy <satishna@xilinx.com>
Reviewed-by: Hyun Kwon <hyun.kwon@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
---

diff --git a/drivers/media/platform/xilinx/xilinx-dma.c b/drivers/media/platform/xilinx/xilinx-dma.c
index d1ddd1005ae9..6e8446b888f1 100644
--- a/drivers/media/platform/xilinx/xilinx-dma.c
+++ b/drivers/media/platform/xilinx/xilinx-dma.c
@@ -856,6 +856,7 @@ __xvip_dma_try_format(struct xvip_dma *dma,
 				min_bpl = (plane_width * info->bpl_factor *
 					   padding_factor_nume * bpl_nume) /
 					   (padding_factor_deno * bpl_deno);
+				min_bpl = roundup(min_bpl, dma->align);
 				bpl = rounddown(plane_fmt[i].bytesperline,
 						dma->align);
 				plane_fmt[i].bytesperline =