From 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 22 Oct 2024 10:36:11 +0000
Subject: [PATCH] 修改4g拨号为QMI,需要在系统里后台执行quectel-CM
---
kernel/sound/firewire/bebob/bebob.c | 63 +++++++++----------------------
1 files changed, 18 insertions(+), 45 deletions(-)
diff --git a/kernel/sound/firewire/bebob/bebob.c b/kernel/sound/firewire/bebob/bebob.c
index eac3ff2..67fa0f2 100644
--- a/kernel/sound/firewire/bebob/bebob.c
+++ b/kernel/sound/firewire/bebob/bebob.c
@@ -1,9 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* bebob.c - a part of driver for BeBoB based devices
*
* Copyright (c) 2013-2014 Takashi Sakamoto
- *
- * Licensed under the terms of the GNU General Public License, version 2.
*/
/*
@@ -127,23 +126,6 @@
return err;
}
-static void bebob_free(struct snd_bebob *bebob)
-{
- snd_bebob_stream_destroy_duplex(bebob);
- fw_unit_put(bebob->unit);
-
- kfree(bebob->maudio_special_quirk);
-
- mutex_destroy(&bebob->mutex);
- kfree(bebob);
-}
-
-/*
- * This module releases the FireWire unit data after all ALSA character devices
- * are released by applications. This is for releasing stream data or finishing
- * transactions safely. Thus at returning from .remove(), this module still keep
- * references for the unit.
- */
static void
bebob_card_free(struct snd_card *card)
{
@@ -153,7 +135,7 @@
clear_bit(bebob->card_index, devices_used);
mutex_unlock(&devices_mutex);
- bebob_free(card->private_data);
+ snd_bebob_stream_destroy_duplex(bebob);
}
static const struct snd_bebob_spec *
@@ -193,7 +175,6 @@
return;
mutex_lock(&devices_mutex);
-
for (card_index = 0; card_index < SNDRV_CARDS; card_index++) {
if (!test_bit(card_index, devices_used) && enable[card_index])
break;
@@ -209,6 +190,11 @@
mutex_unlock(&devices_mutex);
return;
}
+ set_bit(card_index, devices_used);
+ mutex_unlock(&devices_mutex);
+
+ bebob->card->private_free = bebob_card_free;
+ bebob->card->private_data = bebob;
err = name_device(bebob);
if (err < 0)
@@ -249,23 +235,10 @@
if (err < 0)
goto error;
- set_bit(card_index, devices_used);
- mutex_unlock(&devices_mutex);
-
- /*
- * After registered, bebob instance can be released corresponding to
- * releasing the sound card instance.
- */
- bebob->card->private_free = bebob_card_free;
- bebob->card->private_data = bebob;
bebob->registered = true;
return;
error:
- mutex_unlock(&devices_mutex);
- snd_bebob_stream_destroy_duplex(bebob);
- kfree(bebob->maudio_special_quirk);
- bebob->maudio_special_quirk = NULL;
snd_card_free(bebob->card);
dev_info(&bebob->unit->device,
"Sound card registration failed: %d\n", err);
@@ -296,15 +269,15 @@
}
/* Allocate this independent of sound card instance. */
- bebob = kzalloc(sizeof(struct snd_bebob), GFP_KERNEL);
- if (bebob == NULL)
+ bebob = devm_kzalloc(&unit->device, sizeof(struct snd_bebob),
+ GFP_KERNEL);
+ if (!bebob)
return -ENOMEM;
-
bebob->unit = fw_unit_get(unit);
- bebob->entry = entry;
- bebob->spec = spec;
dev_set_drvdata(&unit->device, bebob);
+ bebob->entry = entry;
+ bebob->spec = spec;
mutex_init(&bebob->mutex);
spin_lock_init(&bebob->lock);
init_waitqueue_head(&bebob->hwdep_wait);
@@ -380,12 +353,12 @@
cancel_delayed_work_sync(&bebob->dwork);
if (bebob->registered) {
- /* No need to wait for releasing card object in this context. */
- snd_card_free_when_closed(bebob->card);
- } else {
- /* Don't forget this case. */
- bebob_free(bebob);
+ // Block till all of ALSA character devices are released.
+ snd_card_free(bebob->card);
}
+
+ mutex_destroy(&bebob->mutex);
+ fw_unit_put(bebob->unit);
}
static const struct snd_bebob_rate_spec normal_rate_spec = {
@@ -539,7 +512,7 @@
static struct fw_driver bebob_driver = {
.driver = {
.owner = THIS_MODULE,
- .name = "snd-bebob",
+ .name = KBUILD_MODNAME,
.bus = &fw_bus_type,
},
.probe = bebob_probe,
--
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