git: a17a41ffde0d - main - sound: Use bus_child_deleted methods to free ivars for children
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Date: Fri, 01 Nov 2024 14:13:04 UTC
The branch main has been updated by jhb:
URL: https://cgit.FreeBSD.org/src/commit/?id=a17a41ffde0d1c579dcd7cef7900c3b44be0ec81
commit a17a41ffde0d1c579dcd7cef7900c3b44be0ec81
Author: John Baldwin <jhb@FreeBSD.org>
AuthorDate: 2024-11-01 14:09:11 +0000
Commit: John Baldwin <jhb@FreeBSD.org>
CommitDate: 2024-11-01 14:09:11 +0000
sound: Use bus_child_deleted methods to free ivars for children
Note that hdsp and hdspe were just leaking the ivars on detach
previously.
While here, use M_WAITOK to allocate ivars since attach routines are
sleepable. hdsp and hdspe were using M_NOWAIT without checking the
return value.
Reviewed by: imp
Differential Revision: https://reviews.freebsd.org/D47366
---
sys/dev/sound/pci/csa.c | 26 +++------
sys/dev/sound/pci/emu10kx.c | 134 ++++++++++----------------------------------
sys/dev/sound/pci/hdsp.c | 9 ++-
sys/dev/sound/pci/hdspe.c | 9 ++-
4 files changed, 54 insertions(+), 124 deletions(-)
diff --git a/sys/dev/sound/pci/csa.c b/sys/dev/sound/pci/csa.c
index 6440b73f6341..d62759e22dcb 100644
--- a/sys/dev/sound/pci/csa.c
+++ b/sys/dev/sound/pci/csa.c
@@ -273,22 +273,14 @@ csa_attach(device_t dev)
/* Attach the children. */
/* PCM Audio */
- func = malloc(sizeof(struct sndcard_func), M_DEVBUF, M_NOWAIT | M_ZERO);
- if (func == NULL) {
- error = ENOMEM;
- goto err_teardown;
- }
+ func = malloc(sizeof(struct sndcard_func), M_DEVBUF, M_WAITOK | M_ZERO);
func->varinfo = &scp->binfo;
func->func = SCF_PCM;
scp->pcm = device_add_child(dev, "pcm", DEVICE_UNIT_ANY);
device_set_ivars(scp->pcm, func);
/* Midi Interface */
- func = malloc(sizeof(struct sndcard_func), M_DEVBUF, M_NOWAIT | M_ZERO);
- if (func == NULL) {
- error = ENOMEM;
- goto err_teardown;
- }
+ func = malloc(sizeof(struct sndcard_func), M_DEVBUF, M_WAITOK | M_ZERO);
func->varinfo = &scp->binfo;
func->func = SCF_MIDI;
scp->midi = device_add_child(dev, "midi", DEVICE_UNIT_ANY);
@@ -309,34 +301,33 @@ err_io:
return (error);
}
+static void
+csa_child_deleted(device_t dev, device_t child)
+{
+ free(device_get_ivars(child), M_DEVBUF);
+}
+
static int
csa_detach(device_t dev)
{
csa_res *resp;
sc_p scp;
- struct sndcard_func *func;
int err;
scp = device_get_softc(dev);
resp = &scp->res;
if (scp->midi != NULL) {
- func = device_get_ivars(scp->midi);
err = device_delete_child(dev, scp->midi);
if (err != 0)
return err;
- if (func != NULL)
- free(func, M_DEVBUF);
scp->midi = NULL;
}
if (scp->pcm != NULL) {
- func = device_get_ivars(scp->pcm);
err = device_delete_child(dev, scp->pcm);
if (err != 0)
return err;
- if (func != NULL)
- free(func, M_DEVBUF);
scp->pcm = NULL;
}
@@ -1060,6 +1051,7 @@ static device_method_t csa_methods[] = {
DEVMETHOD(device_resume, csa_resume),
/* Bus interface */
+ DEVMETHOD(bus_child_deleted, csa_child_deleted),
DEVMETHOD(bus_alloc_resource, csa_alloc_resource),
DEVMETHOD(bus_release_resource, csa_release_resource),
DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
diff --git a/sys/dev/sound/pci/emu10kx.c b/sys/dev/sound/pci/emu10kx.c
index e642d334f9e8..b35a5e3139cb 100644
--- a/sys/dev/sound/pci/emu10kx.c
+++ b/sys/dev/sound/pci/emu10kx.c
@@ -3211,16 +3211,8 @@ emu_pci_attach(device_t dev)
sc->pcm[i] = NULL;
/* FRONT */
- func = malloc(sizeof(struct sndcard_func), M_DEVBUF, M_NOWAIT | M_ZERO);
- if (func == NULL) {
- error = ENOMEM;
- goto bad;
- }
- pcminfo = malloc(sizeof(struct emu_pcminfo), M_DEVBUF, M_NOWAIT | M_ZERO);
- if (pcminfo == NULL) {
- error = ENOMEM;
- goto bad;
- }
+ func = malloc(sizeof(struct sndcard_func), M_DEVBUF, M_WAITOK | M_ZERO);
+ pcminfo = malloc(sizeof(struct emu_pcminfo), M_DEVBUF, M_WAITOK | M_ZERO);
pcminfo->card = sc;
pcminfo->route = RT_FRONT;
@@ -3231,16 +3223,8 @@ emu_pci_attach(device_t dev)
if (!(sc->mch_disabled)) {
/* REAR */
- func = malloc(sizeof(struct sndcard_func), M_DEVBUF, M_NOWAIT | M_ZERO);
- if (func == NULL) {
- error = ENOMEM;
- goto bad;
- }
- pcminfo = malloc(sizeof(struct emu_pcminfo), M_DEVBUF, M_NOWAIT | M_ZERO);
- if (pcminfo == NULL) {
- error = ENOMEM;
- goto bad;
- }
+ func = malloc(sizeof(struct sndcard_func), M_DEVBUF, M_WAITOK | M_ZERO);
+ pcminfo = malloc(sizeof(struct emu_pcminfo), M_DEVBUF, M_WAITOK | M_ZERO);
pcminfo->card = sc;
pcminfo->route = RT_REAR;
@@ -3250,16 +3234,8 @@ emu_pci_attach(device_t dev)
device_set_ivars(sc->pcm[RT_REAR], func);
if (sc->has_51) {
/* CENTER */
- func = malloc(sizeof(struct sndcard_func), M_DEVBUF, M_NOWAIT | M_ZERO);
- if (func == NULL) {
- error = ENOMEM;
- goto bad;
- }
- pcminfo = malloc(sizeof(struct emu_pcminfo), M_DEVBUF, M_NOWAIT | M_ZERO);
- if (pcminfo == NULL) {
- error = ENOMEM;
- goto bad;
- }
+ func = malloc(sizeof(struct sndcard_func), M_DEVBUF, M_WAITOK | M_ZERO);
+ pcminfo = malloc(sizeof(struct emu_pcminfo), M_DEVBUF, M_WAITOK | M_ZERO);
pcminfo->card = sc;
pcminfo->route = RT_CENTER;
@@ -3268,16 +3244,8 @@ emu_pci_attach(device_t dev)
sc->pcm[RT_CENTER] = device_add_child(dev, "pcm", DEVICE_UNIT_ANY);
device_set_ivars(sc->pcm[RT_CENTER], func);
/* SUB */
- func = malloc(sizeof(struct sndcard_func), M_DEVBUF, M_NOWAIT | M_ZERO);
- if (func == NULL) {
- error = ENOMEM;
- goto bad;
- }
- pcminfo = malloc(sizeof(struct emu_pcminfo), M_DEVBUF, M_NOWAIT | M_ZERO);
- if (pcminfo == NULL) {
- error = ENOMEM;
- goto bad;
- }
+ func = malloc(sizeof(struct sndcard_func), M_DEVBUF, M_WAITOK | M_ZERO);
+ pcminfo = malloc(sizeof(struct emu_pcminfo), M_DEVBUF, M_WAITOK | M_ZERO);
pcminfo->card = sc;
pcminfo->route = RT_SUB;
@@ -3288,16 +3256,8 @@ emu_pci_attach(device_t dev)
}
if (sc->has_71) {
/* SIDE */
- func = malloc(sizeof(struct sndcard_func), M_DEVBUF, M_NOWAIT | M_ZERO);
- if (func == NULL) {
- error = ENOMEM;
- goto bad;
- }
- pcminfo = malloc(sizeof(struct emu_pcminfo), M_DEVBUF, M_NOWAIT | M_ZERO);
- if (pcminfo == NULL) {
- error = ENOMEM;
- goto bad;
- }
+ func = malloc(sizeof(struct sndcard_func), M_DEVBUF, M_WAITOK | M_ZERO);
+ pcminfo = malloc(sizeof(struct emu_pcminfo), M_DEVBUF, M_WAITOK | M_ZERO);
pcminfo->card = sc;
pcminfo->route = RT_SIDE;
@@ -3309,16 +3269,8 @@ emu_pci_attach(device_t dev)
} /* mch_disabled */
if (sc->mch_rec) {
- func = malloc(sizeof(struct sndcard_func), M_DEVBUF, M_NOWAIT | M_ZERO);
- if (func == NULL) {
- error = ENOMEM;
- goto bad;
- }
- pcminfo = malloc(sizeof(struct emu_pcminfo), M_DEVBUF, M_NOWAIT | M_ZERO);
- if (pcminfo == NULL) {
- error = ENOMEM;
- goto bad;
- }
+ func = malloc(sizeof(struct sndcard_func), M_DEVBUF, M_WAITOK | M_ZERO);
+ pcminfo = malloc(sizeof(struct emu_pcminfo), M_DEVBUF, M_WAITOK | M_ZERO);
pcminfo->card = sc;
pcminfo->route = RT_MCHRECORD;
@@ -3335,16 +3287,8 @@ emu_pci_attach(device_t dev)
#if 0
/* Midi Interface 1: Live!, Audigy, Audigy 2 */
if ((sc->is_emu10k1) || (sc->is_emu10k2) || (sc->is_ca0102)) {
- func = malloc(sizeof(struct sndcard_func), M_DEVBUF, M_NOWAIT | M_ZERO);
- if (func == NULL) {
- error = ENOMEM;
- goto bad;
- }
- midiinfo = malloc(sizeof(struct emu_midiinfo), M_DEVBUF, M_NOWAIT | M_ZERO);
- if (midiinfo == NULL) {
- error = ENOMEM;
- goto bad;
- }
+ func = malloc(sizeof(struct sndcard_func), M_DEVBUF, M_WAITOK | M_ZERO);
+ midiinfo = malloc(sizeof(struct emu_midiinfo), M_DEVBUF, M_WAITOK | M_ZERO);
midiinfo->card = sc;
if (sc->is_emu10k2 || (sc->is_ca0102)) {
midiinfo->port = EMU_A_MUDATA1;
@@ -3361,16 +3305,8 @@ emu_pci_attach(device_t dev)
}
/* Midi Interface 2: Audigy, Audigy 2 (on AudigyDrive) */
if (sc->is_emu10k2 || (sc->is_ca0102)) {
- func = malloc(sizeof(struct sndcard_func), M_DEVBUF, M_NOWAIT | M_ZERO);
- if (func == NULL) {
- error = ENOMEM;
- goto bad;
- }
- midiinfo = malloc(sizeof(struct emu_midiinfo), M_DEVBUF, M_NOWAIT | M_ZERO);
- if (midiinfo == NULL) {
- error = ENOMEM;
- goto bad;
- }
+ func = malloc(sizeof(struct sndcard_func), M_DEVBUF, M_WAITOK | M_ZERO);
+ midiinfo = malloc(sizeof(struct emu_midiinfo), M_DEVBUF, M_WAITOK | M_ZERO);
midiinfo->card = sc;
midiinfo->port = EMU_A_MUDATA2;
@@ -3401,11 +3337,22 @@ bad:
return (error);
}
+static void
+emu_pci_child_deleted(device_t dev, device_t child)
+{
+ struct sndcard_func *func;
+
+ func = device_get_ivars(child);
+ if (func != NULL) {
+ free(func->varinfo, M_DEVBUF);
+ free(func, M_DEVBUF);
+ }
+}
+
static int
emu_pci_detach(device_t dev)
{
struct emu_sc_info *sc;
- struct sndcard_func *func;
int devcount, i;
device_t *childlist;
int r = 0;
@@ -3414,35 +3361,17 @@ emu_pci_detach(device_t dev)
for (i = 0; i < RT_COUNT; i++) {
if (sc->pcm[i] != NULL) {
- func = device_get_ivars(sc->pcm[i]);
- if (func != NULL && func->func == SCF_PCM) {
- device_set_ivars(sc->pcm[i], NULL);
- free(func->varinfo, M_DEVBUF);
- free(func, M_DEVBUF);
- }
r = device_delete_child(dev, sc->pcm[i]);
if (r) return (r);
}
}
if (sc->midi[0] != NULL) {
- func = device_get_ivars(sc->midi[0]);
- if (func != NULL && func->func == SCF_MIDI) {
- device_set_ivars(sc->midi[0], NULL);
- free(func->varinfo, M_DEVBUF);
- free(func, M_DEVBUF);
- }
r = device_delete_child(dev, sc->midi[0]);
if (r) return (r);
}
if (sc->midi[1] != NULL) {
- func = device_get_ivars(sc->midi[1]);
- if (func != NULL && func->func == SCF_MIDI) {
- device_set_ivars(sc->midi[1], NULL);
- free(func->varinfo, M_DEVBUF);
- free(func, M_DEVBUF);
- }
r = device_delete_child(dev, sc->midi[1]);
if (r) return (r);
}
@@ -3450,12 +3379,6 @@ emu_pci_detach(device_t dev)
if (device_get_children(dev, &childlist, &devcount) == 0)
for (i = 0; i < devcount - 1; i++) {
device_printf(dev, "removing stale child %d (unit %d)\n", i, device_get_unit(childlist[i]));
- func = device_get_ivars(childlist[i]);
- if (func != NULL && (func->func == SCF_MIDI || func->func == SCF_PCM)) {
- device_set_ivars(childlist[i], NULL);
- free(func->varinfo, M_DEVBUF);
- free(func, M_DEVBUF);
- }
device_delete_child(dev, childlist[i]);
}
if (childlist != NULL)
@@ -3488,6 +3411,7 @@ static device_method_t emu_methods[] = {
DEVMETHOD(device_attach, emu_pci_attach),
DEVMETHOD(device_detach, emu_pci_detach),
/* Bus methods */
+ DEVMETHOD(bus_child_deleted, emu_pci_child_deleted),
DEVMETHOD(bus_read_ivar, emu_read_ivar),
DEVMETHOD(bus_write_ivar, emu_write_ivar),
diff --git a/sys/dev/sound/pci/hdsp.c b/sys/dev/sound/pci/hdsp.c
index 03e885df63aa..d678fed527dd 100644
--- a/sys/dev/sound/pci/hdsp.c
+++ b/sys/dev/sound/pci/hdsp.c
@@ -887,7 +887,7 @@ hdsp_attach(device_t dev)
return (ENXIO);
for (i = 0; i < HDSP_MAX_CHANS && chan_map[i].descr != NULL; i++) {
- scp = malloc(sizeof(struct sc_pcminfo), M_DEVBUF, M_NOWAIT | M_ZERO);
+ scp = malloc(sizeof(struct sc_pcminfo), M_DEVBUF, M_WAITOK | M_ZERO);
scp->hc = &chan_map[i];
scp->sc = sc;
scp->dev = device_add_child(dev, "pcm", -1);
@@ -955,6 +955,12 @@ hdsp_attach(device_t dev)
return (bus_generic_attach(dev));
}
+static void
+hdsp_child_deleted(device_t dev, device_t child)
+{
+ free(device_get_ivars(child), M_DEVBUF);
+}
+
static void
hdsp_dmafree(struct sc_info *sc)
{
@@ -1002,6 +1008,7 @@ static device_method_t hdsp_methods[] = {
DEVMETHOD(device_probe, hdsp_probe),
DEVMETHOD(device_attach, hdsp_attach),
DEVMETHOD(device_detach, hdsp_detach),
+ DEVMETHOD(bus_child_deleted, hdsp_child_deleted),
{ 0, 0 }
};
diff --git a/sys/dev/sound/pci/hdspe.c b/sys/dev/sound/pci/hdspe.c
index 0e25e9599328..2561fcdebb1c 100644
--- a/sys/dev/sound/pci/hdspe.c
+++ b/sys/dev/sound/pci/hdspe.c
@@ -578,7 +578,7 @@ hdspe_attach(device_t dev)
return (ENXIO);
for (i = 0; i < HDSPE_MAX_CHANS && chan_map[i].descr != NULL; i++) {
- scp = malloc(sizeof(struct sc_pcminfo), M_DEVBUF, M_NOWAIT | M_ZERO);
+ scp = malloc(sizeof(struct sc_pcminfo), M_DEVBUF, M_WAITOK | M_ZERO);
scp->hc = &chan_map[i];
scp->sc = sc;
scp->dev = device_add_child(dev, "pcm", DEVICE_UNIT_ANY);
@@ -626,6 +626,12 @@ hdspe_attach(device_t dev)
return (bus_generic_attach(dev));
}
+static void
+hdspe_child_deleted(device_t dev, device_t child)
+{
+ free(device_get_ivars(child), M_DEVBUF);
+}
+
static void
hdspe_dmafree(struct sc_info *sc)
{
@@ -673,6 +679,7 @@ static device_method_t hdspe_methods[] = {
DEVMETHOD(device_probe, hdspe_probe),
DEVMETHOD(device_attach, hdspe_attach),
DEVMETHOD(device_detach, hdspe_detach),
+ DEVMETHOD(bus_child_deleted, hdspe_child_deleted),
{ 0, 0 }
};