diff options
| author | Markus Armbruster <armbru@redhat.com> | 2020-05-05 12:19:00 +0200 |
|---|---|---|
| committer | Markus Armbruster <armbru@redhat.com> | 2020-05-27 07:45:17 +0200 |
| commit | 56f9dde414053410857d0083e92e5b1b45cf33dc (patch) | |
| tree | 06f3413646825967709f76916da46878ead6f978 /hw | |
| parent | 75de4efa00d2e3df5abfd6b35fc5b04e98443dd2 (diff) | |
xen: Fix and improve handling of device_add usb-host errors
usbback_portid_add() leaks the error when qdev_device_add() fails.
Fix that. While there, use the error to improve the error message.
The qemu_opts_from_qdict() similarly leaks on failure. But any
failure there is a programming error. Pass &error_abort.
Fixes: 816ac92ef769f9ffc534e49a1bb6177bddce7aa2
Cc: Stefano Stabellini <sstabellini@kernel.org>
Cc: Anthony Perard <anthony.perard@citrix.com>
Cc: Paul Durrant <paul@xen.org>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: xen-devel@lists.xenproject.org
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20200505101908.6207-3-armbru@redhat.com>
Acked-by: Paul Durrant <paul@xen.org>
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/usb/xen-usb.c | 19 |
1 files changed, 9 insertions, 10 deletions
diff --git a/hw/usb/xen-usb.c b/hw/usb/xen-usb.c index 961190d0f7..4d266d7bb4 100644 --- a/hw/usb/xen-usb.c +++ b/hw/usb/xen-usb.c @@ -30,6 +30,7 @@ #include "hw/usb.h" #include "hw/xen/xen-legacy-backend.h" #include "monitor/qdev.h" +#include "qapi/error.h" #include "qapi/qmp/qdict.h" #include "qapi/qmp/qstring.h" @@ -755,13 +756,16 @@ static void usbback_portid_add(struct usbback_info *usbif, unsigned port, qdict_put_int(qdict, "port", port); qdict_put_int(qdict, "hostbus", atoi(busid)); qdict_put_str(qdict, "hostport", portname); - opts = qemu_opts_from_qdict(qemu_find_opts("device"), qdict, &local_err); - if (local_err) { - goto err; - } + opts = qemu_opts_from_qdict(qemu_find_opts("device"), qdict, + &error_abort); usbif->ports[port - 1].dev = USB_DEVICE(qdev_device_add(opts, &local_err)); if (!usbif->ports[port - 1].dev) { - goto err; + qobject_unref(qdict); + xen_pv_printf(&usbif->xendev, 0, + "device %s could not be opened: %s\n", + busid, error_get_pretty(local_err)); + error_free(local_err); + return; } qobject_unref(qdict); speed = usbif->ports[port - 1].dev->speed; @@ -793,11 +797,6 @@ static void usbback_portid_add(struct usbback_info *usbif, unsigned port, usbback_hotplug_enq(usbif, port); TR_BUS(&usbif->xendev, "port %d attached\n", port); - return; - -err: - qobject_unref(qdict); - xen_pv_printf(&usbif->xendev, 0, "device %s could not be opened\n", busid); } static void usbback_process_port(struct usbback_info *usbif, unsigned port) |