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[stable-1.1,25/26] fdc: fix implied seek while there is no media in drive

Message ID 1340411610-22596-26-git-send-email-mdroth@linux.vnet.ibm.com
State New
Headers show

Commit Message

Michael Roth June 23, 2012, 12:33 a.m. UTC 
From: Pavel Hrdina <phrdina@redhat.com>

The Windows uses 'READ' command at the start of an instalation
without checking the 'dir' register. We have to abort the transfer
with an abnormal termination if there is no media in the drive.

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
 hw/fdc.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
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Patch

diff --git a/hw/fdc.c b/hw/fdc.c
index 30d34e3..be35201 100644
--- a/hw/fdc.c
+++ b/hw/fdc.c
@@ -159,6 +159,10 @@  static int fd_seek(FDrive *drv, uint8_t head, uint8_t track, uint8_t sect,
         drv->sect = sect;
     }
 
+    if (drv->bs == NULL || !bdrv_is_inserted(drv->bs)) {
+        ret = 2;
+    }
+
     return ret;
 }