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| author | Fam Zheng <famz@redhat.com> | 2014-04-16 10:09:16 +0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2014-04-28 12:09:12 +0200 |
| commit | 4bbeb8b173e8116851d5ececb93189ae34c68309 (patch) | |
| tree | 9ab401a8e35de733d178908c2a8d1ca0d8bf4754 /hw/scsi/scsi-disk.c | |
| parent | 411f491e0af173cf8f39347574941bd26fbae381 (diff) | |
| download | focaccia-qemu-4bbeb8b173e8116851d5ececb93189ae34c68309.tar.gz focaccia-qemu-4bbeb8b173e8116851d5ececb93189ae34c68309.zip | |
scsi-disk: Improve error messager if can't get version number
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 <famz@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'hw/scsi/scsi-disk.c')
| -rw-r--r-- | hw/scsi/scsi-disk.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/hw/scsi/scsi-disk.c b/hw/scsi/scsi-disk.c index 48a28ae199..d2e532e0ee 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; } |