Il 16/04/2014 04:09, Fam Zheng ha scritto:
More often it is that bdrv_ioctl fails due to not supported by driver or whatever reason, in this case we should be specific, because "interface too old" is very confusing.Signed-off-by: Fam Zheng <f...@redhat.com> --- hw/scsi/scsi-disk.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/hw/scsi/scsi-disk.c b/hw/scsi/scsi-disk.c index 48a28ae..d2e532e 100644 --- a/hw/scsi/scsi-disk.c +++ b/hw/scsi/scsi-disk.c @@ -2463,8 +2463,13 @@ static int scsi_block_initfn(SCSIDevice *dev) } /* check we are using a driver managing SG_IO (version 3 and after) */ - if (bdrv_ioctl(s->qdev.conf.bs, SG_GET_VERSION_NUM, &sg_version) < 0 || - sg_version < 30000) { + rc = bdrv_ioctl(s->qdev.conf.bs, SG_GET_VERSION_NUM, &sg_version); + if (rc < 0) { + error_report("scsi-block: can not get version number: %s", + strerror(-rc)); + return -1; + } + if (sg_version < 30000) { error_report("scsi-block: scsi generic interface too old"); return -1; }
Applied to scsi-next, thanks. Paolo
