From 9c6751bf2b2c817c3f52a638566b99125a0ba0f1 Mon Sep 17 00:00:00 2001
From: BALATON Zoltan <balaton@eik.bme.hu>
Date: Wed, 22 Aug 2012 17:19:42 +0200
Subject: [PATCH] console: Clean up bytes per pixel calculation

Division with round up is the correct way to compute this even if the
only case where division with round down gives incorrect result is
probably 15 bpp. This case was explicitely patched up in one of these
functions but was unhandled in the other. (I'm not sure about setting
16 bpp for the 15bpp case either but I left that there for now.)

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
(cherry picked from commit feadf1a4de0d7468ffb671a2b9f681925469fa58)

Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
---
 console.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/console.c b/console.c
index 3b5cabb..8b5e21d 100644
--- a/console.c
+++ b/console.c
@@ -1611,7 +1611,7 @@ PixelFormat qemu_different_endianness_pixelformat(int bpp)
     memset(&pf, 0x00, sizeof(PixelFormat));
 
     pf.bits_per_pixel = bpp;
-    pf.bytes_per_pixel = bpp / 8;
+    pf.bytes_per_pixel = DIV_ROUND_UP(bpp, 8);
     pf.depth = bpp == 32 ? 24 : bpp;
 
     switch (bpp) {
@@ -1660,13 +1660,12 @@ PixelFormat qemu_default_pixelformat(int bpp)
     memset(&pf, 0x00, sizeof(PixelFormat));
 
     pf.bits_per_pixel = bpp;
-    pf.bytes_per_pixel = bpp / 8;
+    pf.bytes_per_pixel = DIV_ROUND_UP(bpp, 8);
     pf.depth = bpp == 32 ? 24 : bpp;
 
     switch (bpp) {
         case 15:
             pf.bits_per_pixel = 16;
-            pf.bytes_per_pixel = 2;
             pf.rmask = 0x00007c00;
             pf.gmask = 0x000003E0;
             pf.bmask = 0x0000001F;
-- 
1.7.12.1