[Qemu-devel] [Bug] Timer bugs in hw/m48t59.c?

[Stefan Weil <Stefan.Weil@weilnetz.de>]

Hi,

could SPARC or PPC users please check whether the timer code
in hw/m48t59.c is really correct?

I expect a crash in qemu_mod_timer after wd_timer = NULL and
a call to qemu_mod_timer with this NULL value.

The same applies to alrm_timer.

I wrote a quick-and-dirty patch, but think that even more
old code could be removed.

Stefan



diff -u -b -B -r1.8 m48t59.c
--- hw/m48t59.c 14 Jun 2006 12:41:34 -0000      1.8
+++ hw/m48t59.c 22 Mar 2007 20:29:15 -0000
@@ -155,7 +155,6 @@
     NVRAM->alarm = mktime(tm);
     if (NVRAM->alrm_timer != NULL) {
         qemu_del_timer(NVRAM->alrm_timer);
-       NVRAM->alrm_timer = NULL;
     }
     if (NVRAM->alarm - time(NULL) > 0)
        qemu_mod_timer(NVRAM->alrm_timer, NVRAM->alarm * 1000);
@@ -184,7 +183,6 @@

     if (NVRAM->wd_timer != NULL) {
         qemu_del_timer(NVRAM->wd_timer);
-       NVRAM->wd_timer = NULL;
     }
     NVRAM->buffer[0x1FF0] &= ~0x80;
     if (value != 0) {