[PATCH] video: Fix line padding calculation for 16 and 24 BPP bitmaps

[Sylwester Nawrocki]

Each row in the pixel array in the bitmap file is padded
if necessary so the row size is always a multiple of 4 bytes.
In current code the complement of row size to a multiple of
4 bytes is further unnecessarily multiplied by the pixel size.
This results in incorrect displaying of bitmaps having row size
that is not a multiple of 4 bytes. Fix this by removing
the unnecessary multiplication.

Tested with 24BPP bitmap and XRGB32 display.

Signed-off-by: Sylwester Nawrocki <s.nawrocki at samsung.com>
---
 drivers/video/video_bmp.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/video/video_bmp.c b/drivers/video/video_bmp.c
index 5a4d12c68d..5537378781 100644
--- a/drivers/video/video_bmp.c
+++ b/drivers/video/video_bmp.c
@@ -328,7 +328,7 @@ int video_bmp_display(struct udevice *dev, ulong bmp_image, int x, int y,
 			for (j = 0; j < width; j++)
 				fb_put_word(&fb, &bmap);
 
-			bmap += (padded_width - width) * 2;
+			bmap += (padded_width - width);
 			fb -= width * 2 + priv->line_length;
 		}
 		break;
@@ -352,7 +352,7 @@ int video_bmp_display(struct udevice *dev, ulong bmp_image, int x, int y,
 				}
 			}
 			fb -= priv->line_length + width * (bpix / 8);
-			bmap += (padded_width - width) * 3;
+			bmap += (padded_width - width);
 		}
 		break;
 #endif /* CONFIG_BMP_24BPP */
-- 
2.17.1