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[PULL,06/33] spapr_vscsi: do not allow device hotplug

Message ID 20200908051953.1616885-7-david@gibson.dropbear.id.au
State New
Headers show
Series ppc-for-5.2 queue 20200908 | expand

Commit Message

David Gibson Sept. 8, 2020, 5:19 a.m. UTC 
From: Daniel Henrique Barboza <danielhb413@gmail.com>

We do not implement hotplug in the vscsi bus, but we forgot to
tell qdev about it. The result is that users are able to hotplug
devices in the vscsi bus, the devices appear in qdev, but they
aren't usable by the guest OS unless the user reboots it first.

Setting qbus hotplug_handler to NULL will tell qdev-monitor, via
qbus_is_hotpluggable(), that we do not support hotplug operations
in spapr_vscsi.

Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=1862059

Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <20200820190635.379657-1-danielhb413@gmail.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
---
 hw/scsi/spapr_vscsi.c | 3 +++
 1 file changed, 3 insertions(+)
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Patch

diff --git a/hw/scsi/spapr_vscsi.c b/hw/scsi/spapr_vscsi.c
index d17dc03c73..57f0a1336f 100644
--- a/hw/scsi/spapr_vscsi.c
+++ b/hw/scsi/spapr_vscsi.c
@@ -1219,6 +1219,9 @@  static void spapr_vscsi_realize(SpaprVioDevice *dev, Error **errp)
 
     scsi_bus_new(&s->bus, sizeof(s->bus), DEVICE(dev),
                  &vscsi_scsi_info, NULL);
+
+    /* ibmvscsi SCSI bus does not allow hotplug. */
+    qbus_set_hotplug_handler(BUS(&s->bus), NULL);
 }
 
 void spapr_vscsi_create(SpaprVioBus *bus)