From 6b726160869063e7ec880af834dd912edf81c8d131899c2b90d3360bbb209db1 Mon Sep 17 00:00:00 2001
From: Steffen Winterfeldt <snwint@suse.com>
Date: Fri, 21 Mar 2014 12:11:39 +0000
Subject: [PATCH] - fix timeout counter to work more accurate (bnc #691211)

OBS-URL: https://build.opensuse.org/package/show/system:install:head/syslinux?expand=0&rev=63
---
 syslinux-4.04-timeout.diff | 61 ++++++++++++++++++++++++++++++++++++++
 syslinux.changes           |  5 ++++
 syslinux.spec              |  2 ++
 3 files changed, 68 insertions(+)
 create mode 100644 syslinux-4.04-timeout.diff

diff --git a/syslinux-4.04-timeout.diff b/syslinux-4.04-timeout.diff
new file mode 100644
index 0000000..b5c7a33
--- /dev/null
+++ b/syslinux-4.04-timeout.diff
@@ -0,0 +1,61 @@
+diff --git a/core/ui.inc b/core/ui.inc
+index 0a4bb56..97945c9 100644
+--- a/core/ui.inc
++++ b/core/ui.inc
+@@ -529,30 +529,36 @@ kernel_corrupt: mov si,err_notkernel
+ ; which can be adjusted by the caller based on the corresponding
+ ; master variables; on return they're updated.
+ ;
+-; This cheats.  If we say "no timeout" we actually get a timeout of
+-; 7.5 years.
+-;
+ getchar_timeout:
+ 		call vgashowcursor
+ 		call reset_idle
+ 
+ .loop:
+-		push word [__jiffies]
++		push dword [__jiffies]
+ 		call pollchar
+ 		jnz .got_char
+ 		call do_idle
+-		pop ax
+-		cmp ax,[__jiffies]		; Has the timer advanced?
++		pop eax
++		sub eax,[__jiffies]		; Has the timer advanced?
+ 		je .loop
+ 
+-		dec dword [ThisKbdTo]
+-		jz .timeout
+-		dec dword [ThisTotalTo]
+-		jnz .loop
++		; more than one tick may have passed, keep the diff in eax
++		neg eax
++
++		cmp dword [ThisKbdTo],0
++		jz .chk_total
++		sub [ThisKbdTo],eax
++		jbe .timeout
++
++.chk_total:
++		cmp dword [ThisTotalTo],0
++		jz .loop
++		sub [ThisTotalTo],eax
++		ja .loop
+ 
+ .timeout:
+ 		; Timeout!!!!
+-		pop cx				; Discard return address
++		pop ecx				; Discard return address
+ 		call vgahidecursor
+ 		mov si,Ontimeout		; Copy ontimeout command
+ 		mov di,command_line
+@@ -561,7 +567,7 @@ getchar_timeout:
+ 		jmp command_done
+ 
+ .got_char:
+-		pop cx				; Discard
++		pop ecx				; Discard
+ 		call getchar
+ 		call vgahidecursor
+ 		ret
diff --git a/syslinux.changes b/syslinux.changes
index 510c566..295490b 100644
--- a/syslinux.changes
+++ b/syslinux.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Fri Mar 21 13:10:04 CET 2014 - snwint@suse.de
+
+- fix timeout counter to work more accurate (bnc #691211)
+
 -------------------------------------------------------------------
 Wed Mar  5 16:23:01 CET 2014 - snwint@suse.de
 
diff --git a/syslinux.spec b/syslinux.spec
index 534f705..165b624 100644
--- a/syslinux.spec
+++ b/syslinux.spec
@@ -48,6 +48,7 @@ Patch10:        %{name}-%{version}-isohybrid_mbr.diff
 Patch11:        %{name}-%{version}-localboot.diff
 Patch12:        %{name}-%{version}-geometry.diff
 Patch13:        %{name}-%{version}-nostrip.diff
+Patch14:        %{name}-%{version}-timeout.diff
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 
 %description
@@ -77,6 +78,7 @@ Authors:
 %patch11 -p1
 %patch12 -p1
 %patch13 -p0
+%patch14 -p1
 
 %build
 cp %{SOURCE2} .