motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2026-03-02 16:14:48 -07:00
Code Issues Projects Releases Packages Wiki Activity Actions

scsi-disk: bdrv_attach_dev() for empty CD-ROM

Browse source 
If no drive=... option is passed (for an empty drive), we don't only
lack the BlockBackend normally created by parse_drive(), but we also
need to manually call blk_attach_dev().

This fixes at least a segfault when unplugging such devices, the bug
that they didn't show up in query-block, and probably some more
problems.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
This commit is contained in:
Kevin Wolf 2017-07-11 14:04:08 +02:00
parent 947231ad3b
commit 83b4fe0ed5
1 changed files with 5 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

5
hw/scsi/scsi-disk.c
View file

@ -2384,9 +2384,14 @@ static void scsi_hd_realize(SCSIDevice *dev, Error **errp)
static void scsi_cd_realize(SCSIDevice *dev, Error **errp)
{
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev);
int ret;
if (!dev->conf.blk) {
/* Anonymous BlockBackend for an empty drive. As we put it into
* dev->conf, qdev takes care of detaching on unplug. */
dev->conf.blk = blk_new(0, BLK_PERM_ALL);
ret = blk_attach_dev(dev->conf.blk, &dev->qdev);
assert(ret == 0);
}
s->qdev.blocksize = 2048;