[SeaBIOS] [PATCH] vbe: round up save/restore size

[Daniel Verkamp]

When calculating the size of the buffer required for the VBE state,
round up rather than truncating when dividing the number of bytes to get
the number of 64-byte blocks. Without this modification, the save state
function will write past the end of a buffer of the size requested.

Signed-off-by: Daniel Verkamp 
---
 vgasrc/vbe.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/vgasrc/vbe.c b/vgasrc/vbe.c
index 66afb011..1a0948cf 100644
--- a/vgasrc/vbe.c
+++ b/vgasrc/vbe.c
@@ -242,7 +242,7 @@ vbe_104f04(struct bregs *regs)
     if (ret < 0)
         goto fail;
     if (cmd == 0)
-        regs->bx = ret / 64;
+        regs->bx = DIV_ROUND_UP(ret, 64);
     regs->ax = 0x004f;
     return;
 fail: