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/oxfw/oxfw.c | 117 ++++++++++++++++++----------------------------------------
1 files changed, 36 insertions(+), 81 deletions(-)
diff --git a/kernel/sound/firewire/oxfw/oxfw.c b/kernel/sound/firewire/oxfw/oxfw.c
index 59c05c5..5490637 100644
--- a/kernel/sound/firewire/oxfw/oxfw.c
+++ b/kernel/sound/firewire/oxfw/oxfw.c
@@ -1,8 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* oxfw.c - a part of driver for OXFW970/971 based devices
*
* Copyright (c) Clemens Ladisch <clemens@ladisch.de>
- * Licensed under the terms of the GNU General Public License, version 2.
*/
#include "oxfw.h"
@@ -114,35 +114,12 @@
return err;
}
-static void oxfw_free(struct snd_oxfw *oxfw)
-{
- unsigned int i;
-
- snd_oxfw_stream_destroy_simplex(oxfw, &oxfw->rx_stream);
- if (oxfw->has_output)
- snd_oxfw_stream_destroy_simplex(oxfw, &oxfw->tx_stream);
-
- fw_unit_put(oxfw->unit);
-
- for (i = 0; i < SND_OXFW_STREAM_FORMAT_ENTRIES; i++) {
- kfree(oxfw->tx_stream_formats[i]);
- kfree(oxfw->rx_stream_formats[i]);
- }
-
- kfree(oxfw->spec);
- mutex_destroy(&oxfw->mutex);
- kfree(oxfw);
-}
-
-/*
- * 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 oxfw_card_free(struct snd_card *card)
{
- oxfw_free(card->private_data);
+ struct snd_oxfw *oxfw = card->private_data;
+
+ if (oxfw->has_output || oxfw->has_input)
+ snd_oxfw_stream_destroy_duplex(oxfw);
}
static int detect_quirks(struct snd_oxfw *oxfw)
@@ -206,7 +183,6 @@
static void do_registration(struct work_struct *work)
{
struct snd_oxfw *oxfw = container_of(work, struct snd_oxfw, dwork.work);
- int i;
int err;
if (oxfw->registered)
@@ -216,6 +192,8 @@
&oxfw->card);
if (err < 0)
return;
+ oxfw->card->private_free = oxfw_card_free;
+ oxfw->card->private_data = oxfw;
err = name_card(oxfw);
if (err < 0)
@@ -229,55 +207,35 @@
if (err < 0)
goto error;
- err = snd_oxfw_stream_init_simplex(oxfw, &oxfw->rx_stream);
- if (err < 0)
- goto error;
- if (oxfw->has_output) {
- err = snd_oxfw_stream_init_simplex(oxfw, &oxfw->tx_stream);
+ if (oxfw->has_output || oxfw->has_input) {
+ err = snd_oxfw_stream_init_duplex(oxfw);
+ if (err < 0)
+ goto error;
+
+ err = snd_oxfw_create_pcm(oxfw);
+ if (err < 0)
+ goto error;
+
+ snd_oxfw_proc_init(oxfw);
+
+ err = snd_oxfw_create_midi(oxfw);
+ if (err < 0)
+ goto error;
+
+ err = snd_oxfw_create_hwdep(oxfw);
if (err < 0)
goto error;
}
-
- err = snd_oxfw_create_pcm(oxfw);
- if (err < 0)
- goto error;
-
- snd_oxfw_proc_init(oxfw);
-
- err = snd_oxfw_create_midi(oxfw);
- if (err < 0)
- goto error;
-
- err = snd_oxfw_create_hwdep(oxfw);
- if (err < 0)
- goto error;
err = snd_card_register(oxfw->card);
if (err < 0)
goto error;
- /*
- * After registered, oxfw instance can be released corresponding to
- * releasing the sound card instance.
- */
- oxfw->card->private_free = oxfw_card_free;
- oxfw->card->private_data = oxfw;
oxfw->registered = true;
return;
error:
- snd_oxfw_stream_destroy_simplex(oxfw, &oxfw->rx_stream);
- if (oxfw->has_output)
- snd_oxfw_stream_destroy_simplex(oxfw, &oxfw->tx_stream);
- for (i = 0; i < SND_OXFW_STREAM_FORMAT_ENTRIES; ++i) {
- kfree(oxfw->tx_stream_formats[i]);
- oxfw->tx_stream_formats[i] = NULL;
- kfree(oxfw->rx_stream_formats[i]);
- oxfw->rx_stream_formats[i] = NULL;
- }
snd_card_free(oxfw->card);
- kfree(oxfw->spec);
- oxfw->spec = NULL;
dev_info(&oxfw->unit->device,
"Sound card registration failed: %d\n", err);
}
@@ -291,14 +249,13 @@
return -ENODEV;
/* Allocate this independent of sound card instance. */
- oxfw = kzalloc(sizeof(struct snd_oxfw), GFP_KERNEL);
- if (oxfw == NULL)
+ oxfw = devm_kzalloc(&unit->device, sizeof(struct snd_oxfw), GFP_KERNEL);
+ if (!oxfw)
return -ENOMEM;
-
- oxfw->entry = entry;
oxfw->unit = fw_unit_get(unit);
dev_set_drvdata(&unit->device, oxfw);
+ oxfw->entry = entry;
mutex_init(&oxfw->mutex);
spin_lock_init(&oxfw->lock);
init_waitqueue_head(&oxfw->hwdep_wait);
@@ -320,13 +277,11 @@
fcp_bus_reset(oxfw->unit);
if (oxfw->registered) {
- mutex_lock(&oxfw->mutex);
-
- snd_oxfw_stream_update_simplex(oxfw, &oxfw->rx_stream);
- if (oxfw->has_output)
- snd_oxfw_stream_update_simplex(oxfw, &oxfw->tx_stream);
-
- mutex_unlock(&oxfw->mutex);
+ if (oxfw->has_output || oxfw->has_input) {
+ mutex_lock(&oxfw->mutex);
+ snd_oxfw_stream_update_duplex(oxfw);
+ mutex_unlock(&oxfw->mutex);
+ }
if (oxfw->entry->vendor_id == OUI_STANTON)
snd_oxfw_scs1x_update(oxfw);
@@ -345,12 +300,12 @@
cancel_delayed_work_sync(&oxfw->dwork);
if (oxfw->registered) {
- /* No need to wait for releasing card object in this context. */
- snd_card_free_when_closed(oxfw->card);
- } else {
- /* Don't forget this case. */
- oxfw_free(oxfw);
+ // Block till all of ALSA character devices are released.
+ snd_card_free(oxfw->card);
}
+
+ mutex_destroy(&oxfw->mutex);
+ fw_unit_put(oxfw->unit);
}
static const struct compat_info griffin_firewave = {
--
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