From: Li Qiang <liqiang6-s@360.cn>
Date: Wed, 14 Dec 2016 18:32:22 -0800
Subject: [PATCH] audio: es1370: add exit function
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Currently the es1370 device emulation doesn't have a exit function,
hot unplug this device will leak some memory. Add a exit function to
avoid this.

Signed-off-by: Li Qiang <liqiang6-s@360.cn>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 585200c9.a968ca0a.1ab80.4c98@mx.google.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
(cherry picked from commit 069eb7b2b8fc47c7cb52e5a4af23ea98d939e3da)
---
 hw/audio/es1370.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/hw/audio/es1370.c b/hw/audio/es1370.c
index 8449b5f..883ec69 100644
--- a/hw/audio/es1370.c
+++ b/hw/audio/es1370.c
@@ -1041,6 +1041,19 @@ static void es1370_realize(PCIDevice *dev, Error **errp)
     es1370_reset (s);
 }
 
+static void es1370_exit(PCIDevice *dev)
+{
+    ES1370State *s = ES1370(dev);
+    int i;
+
+    for (i = 0; i < 2; ++i) {
+        AUD_close_out(&s->card, s->dac_voice[i]);
+    }
+
+    AUD_close_in(&s->card, s->adc_voice);
+    AUD_remove_card(&s->card);
+}
+
 static int es1370_init (PCIBus *bus)
 {
     pci_create_simple (bus, -1, TYPE_ES1370);
@@ -1053,6 +1066,7 @@ static void es1370_class_init (ObjectClass *klass, void *data)
     PCIDeviceClass *k = PCI_DEVICE_CLASS (klass);
 
     k->realize = es1370_realize;
+    k->exit = es1370_exit;
     k->vendor_id = PCI_VENDOR_ID_ENSONIQ;
     k->device_id = PCI_DEVICE_ID_ENSONIQ_ES1370;
     k->class_id = PCI_CLASS_MULTIMEDIA_AUDIO;