From 64c68080da429edf30a9857e3a698cb9ed335bd3 Mon Sep 17 00:00:00 2001 From: pbrook Date: Mon, 22 Sep 2008 16:30:29 +0000 Subject: Add comment to windows SCSI hack. git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5295 c046a42c-6fe2-441c-8c8c-71466251a162 --- hw/lsi53c895a.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'hw/lsi53c895a.c') diff --git a/hw/lsi53c895a.c b/hw/lsi53c895a.c index e45eefa..53a2add 100644 --- a/hw/lsi53c895a.c +++ b/hw/lsi53c895a.c @@ -1199,6 +1199,11 @@ again: } } if (insn_processed > 10000 && !s->waiting) { + /* Some windows drivers make the device spin waiting for a memory + location to change. If we have been executed a lot of code then + assume this is the case and force an unexpected device disconnect. + This is apparently sufficient to beat the drivers into submission. + */ if (!(s->sien0 & LSI_SIST0_UDC)) fprintf(stderr, "inf. loop with UDC masked\n"); lsi_script_scsi_interrupt(s, LSI_SIST0_UDC, 0); -- cgit v1.1