[v2] Error handling fixes & cleanups

[PATCH v2 09/25] sd/milkymist-memcard: Plug minor memory leak in realize

Markus Armbruster posted 25 patches 5 years, 4 months ago

Diff against v1 v3
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Maintainers: Eric Auger <eric.auger@redhat.com>, "Edgar E. Iglesias" <edgar.iglesias@gmail.com>, Xie Changlong <xiechanglong.d@gmail.com>, Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>, Aurelien Jarno <aurelien@aurel32.net>, Wen Congyang <wencongyang2@huawei.com>, Paolo Bonzini <pbonzini@redhat.com>, Markus Armbruster <armbru@redhat.com>, "Daniel P. Berrangé" <berrange@redhat.com>, Peter Maydell <peter.maydell@linaro.org>, Eduardo Habkost <ehabkost@redhat.com>, Kevin Wolf <kwolf@redhat.com>, Marcel Apfelbaum <marcel.apfelbaum@gmail.com>, David Gibson <david@gibson.dropbear.id.au>, Aleksandar Markovic <aleksandar.qemu.devel@gmail.com>, Greg Kurz <groug@kaod.org>, "Michael S. Tsirkin" <mst@redhat.com>, Aleksandar Rikalo <aleksandar.rikalo@syrmia.com>, Christian Schoenebeck <qemu_oss@crudebyte.com>, Alistair Francis <Alistair.Francis@wdc.com>, Bastian Koppelmann <kbastian@mail.uni-paderborn.de>, Alistair Francis <alistair@alistair23.me>, Jason Wang <jasowang@redhat.com>, Max Reitz <mreitz@redhat.com>, Gerd Hoffmann <kraxel@redhat.com>, Michael Roth <mdroth@linux.vnet.ibm.com>, Palmer Dabbelt <palmer@dabbelt.com>, Sagar Karandikar <sagark@eecs.berkeley.edu>, Richard Henderson <rth@twiddle.net>, "Marc-André Lureau" <marcandre.lureau@redhat.com>

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[PATCH v2 09/25] sd/milkymist-memcard: Plug minor memory leak in realize

Posted by Markus Armbruster 5 years, 4 months ago

milkymist_memcard_realize() leaks an Error object when realization of
its "sd-card" device fails.  Quite harmless, since we only ever
realize this once, in milkymist_init() via milkymist_memcard_create().

Plug the leak.

Fixes: 3d0369ba499866cc6a839f71212d97876500762d
Cc: Philippe Mathieu-Daudé <philmd@redhat.com>
Cc: Michael Walle <michael@walle.cc>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
---
 hw/sd/milkymist-memcard.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/hw/sd/milkymist-memcard.c b/hw/sd/milkymist-memcard.c
index 482e97191e..afdb8aa0c0 100644
--- a/hw/sd/milkymist-memcard.c
+++ b/hw/sd/milkymist-memcard.c
@@ -280,9 +280,8 @@ static void milkymist_memcard_realize(DeviceState *dev, Error **errp)
     blk = dinfo ? blk_by_legacy_dinfo(dinfo) : NULL;
     carddev = qdev_new(TYPE_SD_CARD);
     qdev_prop_set_drive(carddev, "drive", blk);
-    qdev_realize_and_unref(carddev, BUS(&s->sdbus), &err);
-    if (err) {
-        error_setg(errp, "failed to init SD card: %s", error_get_pretty(err));
+    if (!qdev_realize_and_unref(carddev, BUS(&s->sdbus), &err)) {
+        error_propagate_prepend(errp, err, "failed to init SD card: %s");
         return;
     }
     s->enabled = blk && blk_is_inserted(blk);
-- 
2.26.2