From: Kevin O'Connor <kevin@koconnor.net>
Date: Tue, 1 Sep 2015 23:43:08 +0000 (-0400)
Subject: rtc: Disable NMI in rtc_mask()
X-Git-Tag: rel-1.9.0~47
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=3156b71a535e6617fbc60fd6aef09a229aca7327;p=seabios.git

rtc: Disable NMI in rtc_mask()

The rtc_mask() function should make sure the NMI disable bit is set
(just as rtc_read() and rtc_write() do).

Reported-by: Tim Shearer <tim.shearer@overturenetworks.com>
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
---

diff --git a/src/hw/rtc.c b/src/hw/rtc.c
index 570a3ad..9649a5a 100644
--- a/src/hw/rtc.c
+++ b/src/hw/rtc.c
@@ -30,6 +30,7 @@ rtc_write(u8 index, u8 val)
 void
 rtc_mask(u8 index, u8 off, u8 on)
 {
+    index |= NMI_DISABLE_BIT;
     outb(index, PORT_CMOS_INDEX);
     u8 val = inb(PORT_CMOS_DATA);
     outb((val & ~off) | on, PORT_CMOS_DATA);