The branch main has been updated by christos:

URL: 
https://cgit.FreeBSD.org/src/commit/?id=85d1c84c2406aa2e4e2114215b01eee65714848f

commit 85d1c84c2406aa2e4e2114215b01eee65714848f
Author:     Christos Margiolis <chris...@freebsd.org>
AuthorDate: 2024-07-27 11:55:32 +0000
Commit:     Christos Margiolis <chris...@freebsd.org>
CommitDate: 2024-07-27 11:55:32 +0000

    snd_hdsp*: Free up channel resources in case of CHANNEL_INIT() failure
    
    Sponsored by:   The FreeBSD Foundation
    MFC after:      2 days
    Reviewed by:    dev_submerge.ch, markj
    Differential Revision:  https://reviews.freebsd.org/D45982
---
 sys/dev/sound/pci/hdsp-pcm.c  | 59 ++++++++++++++++++++++---------------------
 sys/dev/sound/pci/hdspe-pcm.c | 59 ++++++++++++++++++++++---------------------
 2 files changed, 60 insertions(+), 58 deletions(-)

diff --git a/sys/dev/sound/pci/hdsp-pcm.c b/sys/dev/sound/pci/hdsp-pcm.c
index 9ba0e5e345d0..29bd0bc70ee4 100644
--- a/sys/dev/sound/pci/hdsp-pcm.c
+++ b/sys/dev/sound/pci/hdsp-pcm.c
@@ -661,6 +661,35 @@ clean(struct sc_chinfo *ch)
 }
 
 /* Channel interface. */
+static int
+hdspchan_free(kobj_t obj, void *data)
+{
+       struct sc_pcminfo *scp;
+       struct sc_chinfo *ch;
+       struct sc_info *sc;
+
+       ch = data;
+       scp = ch->parent;
+       sc = scp->sc;
+
+#if 0
+       device_printf(scp->dev, "hdspchan_free()\n");
+#endif
+
+       snd_mtxlock(sc->lock);
+       if (ch->data != NULL) {
+               free(ch->data, M_HDSP);
+               ch->data = NULL;
+       }
+       if (ch->caps != NULL) {
+               free(ch->caps, M_HDSP);
+               ch->caps = NULL;
+       }
+       snd_mtxunlock(sc->lock);
+
+       return (0);
+}
+
 static void *
 hdspchan_init(kobj_t obj, void *devinfo, struct snd_dbuf *b,
     struct pcm_channel *c, int dir)
@@ -720,6 +749,7 @@ hdspchan_init(kobj_t obj, void *devinfo, struct snd_dbuf *b,
 
        if (sndbuf_setup(ch->buffer, ch->data, ch->size) != 0) {
                device_printf(scp->dev, "Can't setup sndbuf.\n");
+               hdspchan_free(obj, ch);
                return (NULL);
        }
 
@@ -793,35 +823,6 @@ hdspchan_getptr(kobj_t obj, void *data)
        return (pos);
 }
 
-static int
-hdspchan_free(kobj_t obj, void *data)
-{
-       struct sc_pcminfo *scp;
-       struct sc_chinfo *ch;
-       struct sc_info *sc;
-
-       ch = data;
-       scp = ch->parent;
-       sc = scp->sc;
-
-#if 0
-       device_printf(scp->dev, "hdspchan_free()\n");
-#endif
-
-       snd_mtxlock(sc->lock);
-       if (ch->data != NULL) {
-               free(ch->data, M_HDSP);
-               ch->data = NULL;
-       }
-       if (ch->caps != NULL) {
-               free(ch->caps, M_HDSP);
-               ch->caps = NULL;
-       }
-       snd_mtxunlock(sc->lock);
-
-       return (0);
-}
-
 static int
 hdspchan_setformat(kobj_t obj, void *data, uint32_t format)
 {
diff --git a/sys/dev/sound/pci/hdspe-pcm.c b/sys/dev/sound/pci/hdspe-pcm.c
index e7fa03904595..79bfcbea3406 100644
--- a/sys/dev/sound/pci/hdspe-pcm.c
+++ b/sys/dev/sound/pci/hdspe-pcm.c
@@ -650,6 +650,35 @@ clean(struct sc_chinfo *ch)
 }
 
 /* Channel interface. */
+static int
+hdspechan_free(kobj_t obj, void *data)
+{
+       struct sc_pcminfo *scp;
+       struct sc_chinfo *ch;
+       struct sc_info *sc;
+
+       ch = data;
+       scp = ch->parent;
+       sc = scp->sc;
+
+#if 0
+       device_printf(scp->dev, "hdspechan_free()\n");
+#endif
+
+       snd_mtxlock(sc->lock);
+       if (ch->data != NULL) {
+               free(ch->data, M_HDSPE);
+               ch->data = NULL;
+       }
+       if (ch->caps != NULL) {
+               free(ch->caps, M_HDSPE);
+               ch->caps = NULL;
+       }
+       snd_mtxunlock(sc->lock);
+
+       return (0);
+}
+
 static void *
 hdspechan_init(kobj_t obj, void *devinfo, struct snd_dbuf *b,
     struct pcm_channel *c, int dir)
@@ -702,6 +731,7 @@ hdspechan_init(kobj_t obj, void *devinfo, struct snd_dbuf 
*b,
 
        if (sndbuf_setup(ch->buffer, ch->data, ch->size) != 0) {
                device_printf(scp->dev, "Can't setup sndbuf.\n");
+               hdspechan_free(obj, ch);
                return (NULL);
        }
 
@@ -774,35 +804,6 @@ hdspechan_getptr(kobj_t obj, void *data)
        return (pos);
 }
 
-static int
-hdspechan_free(kobj_t obj, void *data)
-{
-       struct sc_pcminfo *scp;
-       struct sc_chinfo *ch;
-       struct sc_info *sc;
-
-       ch = data;
-       scp = ch->parent;
-       sc = scp->sc;
-
-#if 0
-       device_printf(scp->dev, "hdspechan_free()\n");
-#endif
-
-       snd_mtxlock(sc->lock);
-       if (ch->data != NULL) {
-               free(ch->data, M_HDSPE);
-               ch->data = NULL;
-       }
-       if (ch->caps != NULL) {
-               free(ch->caps, M_HDSPE);
-               ch->caps = NULL;
-       }
-       snd_mtxunlock(sc->lock);
-
-       return (0);
-}
-
 static int
 hdspechan_setformat(kobj_t obj, void *data, uint32_t format)
 {

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