diff options
Diffstat (limited to 'hw/scsi/scsi-generic.c')
| -rw-r--r-- | hw/scsi/scsi-generic.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/hw/scsi/scsi-generic.c b/hw/scsi/scsi-generic.c index 8d92e0d..3733d2c 100644 --- a/hw/scsi/scsi-generic.c +++ b/hw/scsi/scsi-generic.c @@ -394,6 +394,7 @@ static void scsi_destroy(SCSIDevice *s) static int scsi_generic_initfn(SCSIDevice *s) { + int rc; int sg_version; struct sg_scsi_id scsiid; @@ -412,8 +413,11 @@ static int scsi_generic_initfn(SCSIDevice *s) } /* check we are using a driver managing SG_IO (version 3 and after */ - if (bdrv_ioctl(s->conf.bs, SG_GET_VERSION_NUM, &sg_version) < 0) { - error_report("scsi generic interface not supported"); + rc = bdrv_ioctl(s->conf.bs, SG_GET_VERSION_NUM, &sg_version); + if (rc < 0) { + error_report("cannot get SG_IO version number: %s. " + "Is this a SCSI device?", + strerror(-rc)); return -1; } if (sg_version < 30000) { |